New Thunderbolt Revision Features 20 Gbps Throughput, 4K Video Support 301
hooligun writes "The next-gen Thunderbolt tech (code-named Falcon Ridge) enables 4K video file transfer and display simultaneously in addition to running at 20 Gbps. It will be backward-compatible with previous-gen Thunderbolt cables and connectors, and production is set to ramp up in 2014. An on-stage demo with fresh-off-the-press silicon showed the new Thunderbolt running 1,200 Mbps, which is certainly a step up from what's currently on the market."
Adoption by Mass Market? (Score:4, Interesting)
So, will we see OEM Windows PCs come by default with Thunderbolt ports? Or is this another fantastic, magical, extraordinary Apple Inc. exclusive?
Re:Adoption by Mass Market? (Score:4, Funny)
So, will we see OEM Windows PCs come by default with Thunderbolt ports? Or is this another fantastic, magical, extraordinary Apple Inc. exclusive?
You wouldn't seriously risk upgrading to Windows 8 just to be able to use 20 Gbps external connections would you???
a laptop can not replace a workstion system (Score:2)
a laptop can not replace a workstation system also the macbook maxes out at 16gb ram and only 1 HDD build in.
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I wish apple would realise this. I love mac pros and macbooks ,but they just are not the same sort of product and it feels like apple has forgotten about the humble mac pro.
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The Mac Pro is a niche system. It's designed for heavy duty multimedia and there is no such thing as enough Ram in that niche. Macbook Pro is good enough for everything else except maybe hardcore gamers that need to upgrade video cards every time a new one comes out.
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The Mac Pro is a niche system.
All high-end PCs are niche systems.
Re:a laptop can not replace a workstion system (Score:4, Insightful)
I know Mac hardware isn't for everyone but really that post just sounds like blatant envy.
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Or for people that like larger screens
Umm what? I can connect three separate screens directly into my (retina) macbook pro (2x displayport + 1x dvi). More with external thunderbolt PCIe breakout chassis' using more GPU's. One of the external screens I have connected has a resolution of 3840x2400, which is about as big as it gets resolution-wise.
Re:a laptop can not replace a workstion system (Score:4, Funny)
nice to have a supercomputer laying around.
Macbook vs Mac Pro (Score:5, Insightful)
If you wanted to configure your macbook to match a *current* mac pro, you'd need 8 more full i7 cores (assuming you have four in the macbook), four hard drives, four external graphics engines, and 48 gb (I think) of RAM... all strung out on your thunderbolt cable. And a *lot* of power supply wiring. Not sure that's an equivalence that is worth much.
And add to that whatever they do with the next Mac pro upgrade they say they're working on... More cores? More ram? Faster system bus? All of the above? No, don't think your macbook is quite there, lol.
Re:Macbook vs Mac Pro (Score:4, Informative)
Speaking for myself, 48-bit image processing in a layer-based, non-destructive paradigm. Software defined radio -- extremely demanding, that. High speed data, maximized low latency requirements, no particular limit to the amount of processing one might like to apply to the signals / spectrum segment. I use Logic for musical performance, and that's absolutely got to stay local, again latency must be managed to then nth degree and the more processing that can be done within that bound, the better. None of this can be handed off down the network; it just wouldn't work well. Or at all.
I sure would like to see core-per-file parallel compilation, too, but instead, all of the dev environments I use keep the source and object on HD and do them one at a time, serially. Big projects take much longer than the hardware at hand could manage. XCode, QT, gcc/gmake... all serial sluggards.
Well, sort of. My understanding (which could be wrong) is that those 12 cores are all hyperthreaded, so as long as you're not requiring FPU or blowing cache a lot, you're more-or-less running 24 cores. Not sure as I have an older generation dual four-core w/o hyperthreads (but with two sets of four FPUs.) It's a fair bit of computing power; my Macbook pro, a dual core with lots of resources, can't even come close to keeping up with my older Mac pro.
That varies. We use an integer-math approach that maximizes CPU power and doesn't rely so much on the highly variable GPU capabilities of the various Mac models (not to mention having to drink more of the Apple kool-aid than really needed... we really like portable code.) There are a number of advantages to this, first among them the availability of a great deal more RAM (it's useful to stack a hundred or so 48-bit astro images, for instance) and so more layers-per-image, but also a more consistent performance for the end user. Some Macs -- the current minis, for example -- use bottom feeder Intel shared RAM GPUs. They aren't anything to write home about. Even so, the machine can be carrying a 2.6GHz i7 w/16gb. We often outperform Aperture, Apple's poster child for GPU use in image processing; can't really say why, but there it is.
For some value of bigger jobs, sure. For the things that I do on my desk, no.
In any case, a Macbook isn't going to provide even close to the same level of hardware as a Mac pro, which was really my only point above.
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Ok, so we've established that you don't know anything about SDR software (tip: the desktop software is not doing the the same tasks as the hardware, and there is a huge amount more that can be done once the baseband data is in... dual core laptops don't have the power required to go very far down that road... and yes, I'm the author of one of the more sophisticated SDR packages out there); you don't understand what is required to make multiple compiles work *well* (tip, it's not just an option to make), yo
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Well my Sony Vaio has an usb compatible thunderbolt port, which only can be used to connect the external video card, and as a regular usb 3.0 port. I think Sony is paying Apple for a license to use the technology. Apple could easily make the thunderbolt port work as an usb port too, but they just don't because they want to sell extra cables.
Again, the misinformation around thunderbolt is hilarious.
Apple DOES NOT OWN the Thunderbolt technology. It belongs to Intel. There is no requirement to make it fit into a USB port, or to only work that way. The official spec calls for the use of the mini displayport connector, which Apple owns the licence to, which it has granted royalty free licencing to anyone who wants to use it. The MDP connector looks nothing like USB.
Sony is not paying Apple anything to use the technology.
Re:Adoption by Mass Market? (Score:5, Informative)
Asus has a motherboard. [asus.com]
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Re: Adoption by Mass Market? (Score:5, Informative)
Apple (Score:2)
Apple has confusingly named their new iDevice connector "Lightning," so I think people can be forgiven for assuming Thunderbolt and Lightning are from the same company.
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Thunderbolt and Lightning
Very very Firghtening me!
Re: Adoption by Mass Market? (Score:5, Informative)
Thunderbolt (codenamed Light Peak)[1] is a hardware interface that allows for the connection of external peripherals to a computer. It uses the same connector as Mini DisplayPort (MDP). It was released in its finished state on February 24, 2011.[2]
On the same day, Apple released new iMacs with Thunderbolt. [apple.com]
Now what are your facts?
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[citation needed]
What exactly are the poor engineering choices for which Apple is pushing this stuff? Why is the overall value and appeal dubious? I only ask because somehow you're at +4 Interesting without having actually said anything.
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There's some really good storage available with Thunderbolt now. I can get an 8-bay RAID enclosure with Thunderbolt for around a grand (bare enclosure with no drives) put 8 drive mechanisms in it and get a multi-terabyte array that delivers around 650MB/sec (megabytes, not megabits) per second read and write on my MacBook Pro.
Prior to this you needed really expensive FibreChannel equipment to deliver the same kind of performance.
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Prior to this you needed really expensive FibreChannel equipment to deliver the same kind of performance.
No, not really. You can get an 8 bay enclosure (like this [sansdigital-shop.com]) with SFF-8088 connectivity for half a grand and get 4 gigabytes per second read/write.
Re: Adoption by Mass Market? (Score:4, Informative)
Ummm. No.
That enclosure doesn't do RAID, it's a JBOD enclosure. The peak transfer rate for the mini-SAS interface is 3Gbs (3 Gigabits, not bytes, per second) this is an absolute maximum of 375 MB/sec. The real-world performance of the unit will then depend on the RAID card you're using and will typically be somewhere lower than the peak theoretical performance of the interface. I don't know what drives you're putting in there that can each do 500MB/sec (SSD?) and I don't know what RAID card you propose to use that'll let all eight SSDs run at their peak rate.
The unit I was talking about (http://www.areca.com.tw/products/thunderbolt.htm) on the other hand, with 8 drives in it has a measured real-world performance of 650MB/sec read or write via a single Thunderbolt cable, using RAID 5 that's done in hardware in the enclosure itself.
This 650MB/sec is the actual performance that the BlackMagic Disk Speed Test gave me on a MacBook Pro 13" laptop connected to the RAID with 8x 1TB Western Digital hard drives in it.
Thunderbolt is faster than SAS, SATA and SATA II. Thunderbolt is faster than 2, 4 and 8 Gb/sec Fibre Channel - Thunderbolt is a 10Gbs full-duplex interface, so can transfer 20Gb/sec at it's peak. That's 2.5 Gigabytes per second (1.25 in each direction).
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The peak transfer rate for the mini-SAS interface is 3Gbs (3 Gigabits, not bytes, per second) this is an absolute maximum of 375 MB/sec.
I'm sorry, but you're wrong. Have a look at this review [servethehome.com], for example.
Each mini-SAS cable provides four lanes of SAS (3 Gbit/s), SAS2 (6 Gbit/s), or SAS3 (12 Gbit/s), depending on the HBA in use. That equates to 12 Gbit/s, 24 Gbit/s or 48 Gbit/s per cable. Also, with SAS2 being out since 2009, it's pretty hard to even find a SAS1 card anymore.
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The peak transfer rate for the mini-SAS interface is 3Gbs (3 Gigabits, not bytes, per second) this is an absolute maximum of 375 MB/sec
Uh, that Sans Digital has a SFF-8088 connector, which is a x4 SAS link. AKA SAS is like PCIe, you can gang lanes, and that is exactly what this is doing. So its actually 12Gb/sec not 3. The hard drives are individually 3Gbit, but the backplane is a SAS expander.
Connect it to a RAID card, and you should be able to pull pretty nice numbers (they claim close to 800MB/sec). Tha
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It can do these kinds of transfer rates, however SAS enclosures (with built-in RAID controllers) tend to be more expensive and then you also need a SAS interface card, whereas Thunderbolt is now being built into motherboards.
This is starting to get to the upper limits of what SAS can do. Only Fibre Channel and Thunderbolt will do these kinds of rates with room to grow.
Thunderbolt devices (Score:3)
note: jedidiah is a gnu/hippie who's angry that Apple took-over the *nix desktop market.
In any case, Thunderbolt has been out for two years now and the peripheral selection is pretty pathetic. Apple has an expensive monitor/docking station. Belkin's docking station has been "coming soon" forever now. And there's some drive enclosures, and that's abou tit.
The Belkin and Matrox docks have been out for a while now. The Belkin dock was "Temporarily out of stock" at Amazon despite the $299 price tag the last time I checked I checked (about 60 seconds ago). There are no drive enclosures available (unfortunately), only ready made external drives which only make sense if you have an SSD to really take advantage of Thunderbolt's speed and a capacity of at least 128gb which makes them extra expensive. Buying a Thunderbolt enabled mechanical drive only makes sense if
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What's keeping Thunderbolt down is the lack of widespread roll out and affordable PCI-E x16 enclosures to use with graphics cards.
Paying $800 so I can use a regular graphics card with my laptop is absurd. For that price I can buy the entire computer and GPU I'd need in a desktop format.
And the only reason it's expensive is because there's just no volume.
Re: Adoption by Mass Market? (Score:3)
Thunderbolt is Intel's answer to this problem as well as the lack of a universal laptop connector and the lack of external data connection. As far as I know, most docks don't have a high bandwith data external connection like eSATA. It competes against eSATA, SAS, and in some use cases USB3. Whether it will succeed is a different story. Apple will use it as it solves their problems just like
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Would even that be enough? I have a motherboard with Firewire ports, but the only use I get out of them is when I need to connect my sister's MacBook for some reason.
I've got more USB 3.0 devices than I do Firewire.
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A counter-example: Last time I bought a desktop computer, I went out of my way to buy one with Firewire(400, at the time, was cutting edge). I then proceeded to buy an external hard drive for routine backups, and later daisy-chained an iPod 4g off it. It beat the pants off the USB cable that the iPod came with, at the time.
I had no idea what I was going to do with it at the time, though.
This time, I went with one of the Gigabyte thunderbolt motherboards. God only knows what I'm going to do with it, bu
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Your saying Firewire was great because you could plug a whopping 2 devices in to it? And both those devices had USB connectors which everything else used?
I'm not saying that Firewire isn't technically better than USB for several things.
Its just a poor reason to say its great because you managed to find something to plug in to it.
FYI I have never used my firewire ports - nothing I have uses it.
Is a separate technology really required just for hard drives? Not really which is why USB 'won'.
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Firewire was great because USB2 had a problem of shared bandwidth, and the sliver of my total 480 MB/sec allotted to my backup drive and iPod made Firewire's 400 MB/sec of intelligently allotted bandwidth a lot more compelling.
On top of that, by the time I got the iPod, the Pentium 4 was showing its age; anything that made the whole experience more responsive was appreciated.
Plus, I was quite an impatient little tyke at the time. I haven't gotten all that much better, but the technology sure has.
next generation of graphics cards will want pci-e (Score:2)
next generation of graphics cards will want pci-e at least a X16 2.0 link or a X8 3.0 one. thunderbolt is way under that it's not even pci-e 2.0 X8
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I'm throwing science at the wall to see what sticks.
I actually wouldn't be entirely surprised if the oil-immersion GPU happens eventually, though.
Re:Adoption by Mass Market? (Score:5, Insightful)
I used to use firewire all the time back when I used to do a lot of video editing around the turn of the millennium. The first generation of USB was so bad that I didn't even consider USB2 for my external storage. Firewire, OTOH, was a rock. Never had a device just disappear for no reason. Throughput was better, CPU load was lower, isochronous transfer was possible. Night and day. Like comparing a Lexus to a Yugo.
Of course, now all my stuff is USB because firewire components are so rare and I have no need to move devices between computers. I've got gigabit ethernet to move files and I don't need to move a single optical drive between multiple machines. And USB is much more reliable than it used to be. My new gaming rig has two firewire ports but I haven't used them. Neither of my laptops has a firewire port and I haven't missed them. Thunderbolt seems like a solution to a problem that no longer exists [in my world].
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Magical and exclusive? Do you mean like when Windows PCs started to ship with FireWire ports?
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Show me a laptop with SCSI, fibre channel or 10GBe please.
Well there if you have Thunderbolt, you can do 10GBASE-T:
ThunderLink NT 1102 (10GBASE-T) [attotech.com] 10Gb/s Thunderbolt (2-port) to 10GbE (2-Port).
Re:Adoption by Mass Market? (Score:4, Interesting)
There are laptops coming with Thunderbolt.
Sony's integrated one where the "mobile" mode is a standard Intel 4000 graphics for low power, but then you can dock it (via proprietary USB connector - grr...) which adds a Blu-Ray optical drive AND a decent GPU to the mix. Some company is actually making a PCIe enclosure so you can drive an external card through thunderbolt.
Heck, that's one of Thunderbolt's interesting applications - you can wire up a PCIe video card to it and have powerhouse graphics that suck down the watts, but easily unplug when you don't need it. Essentially, it's a form of hot-pluggable PCIe. And it lacks all the funkiness that USB adapters typically entail.
A thunderbolt serial port, while overkill, will present itself to your laptop as a NATIVE serial port - no messing with icky USB serial adapters that are iffy - this works just like a built-in serial port because it is using the standard busses your PC expects. As far as anyone is concerned, it hooks straight to the PCIe bus, and does normal PCIe things, and other than some minor hardware bridging, acts like it's plugged into an internal PCIe bus.
What could I connect this to? (Score:2, Insightful)
Without general support great features are worthless. Apple is repeating Sony's mistake with betamax. They won't share, thus it will fail.
Great technology without support is worthless.
Re:What could I connect this to? (Score:5, Informative)
That's simply false. There's a large amount of Thunderbolt accessories, including video gear, PCIe expansion chassis (very useful for laptops), and docks. Sonnet just announced this Thunderbolt dock [sonnettech.com], which seems to be a pretty great deal for laptops.
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...for differing values of large.
I am sure that you would also claim that Firewire rules the world too.
With all of the costs and extra gear involved. You might as well just have another PC. The real problem here isn't that Apple laptops are lame but that there isn't a seamless experience between different devices on an Apple network.
The Cloud concept there doesn't quite live up to the hype.
Re: What could I connect this to? (Score:2)
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Legacy support and rapid adoption have nothing in common.
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No, Firewire is pretty much dead, although it was good for a while.
It seems to me that Thunderbolt has had faster and wider adoption than Firewire did over the same time after introduction. Thunderbolt is also a lot more useful than Firewire, since it's essentially PCIe over a serial cable. It's fairly trivial to adapt existing PCIe drivers to run the same hardware as an external TB box (or the PCIe card in a TB PCIe chassis), so it's very flexible.
Basically, TB finally delivers on the ancient promise of a
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I want one, but srsly, the cost of that thing is retarded. $400 for the base option, which is essentially an extravagant usb3.0 hub and dvd rw with some bells on it.
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Unfortunately it doesn't "just work".
I have a Mac Pro 17" with Thunderbolt that I mainly use to hook up an external monitor (Thunderbolt->DVI with a KVM switch in between).
I picked up a LaCie Thunderbolt-SATA adapter to mess with. Plugged it in between the laptop and the KVM switch. Oops. Video quality goes to hell. If I pull the KVM it works better, but that kind of screws up my desktop.
It would have been nice if Apple had put two (or more) Thunderbolt ports on the machine but, hey, all you need is
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zzzzzzzzzzt
Wow! That's so awesome I think I'll take two of them!
There are already several options (Score:5, Informative)
What could I connect this to?
Several RAID arrays, gigabit ethernet, multiple monitors, misc external storage (like single disks or a DROBO).
All with one connector...
Yes Thunderbolt stuff was slow to come out, but the rate of arrival has picked up.
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Do each of the devices get their own DMA signalling, or are you crippled to only one device being fast at a time? How does context sharing of the pipe sharing work? I imagine that this -could- be a great step in the right direction, but they need a lot more than just a raw fat pipe to make multiple peripherals fast and responsive.
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What could I connect this to?
Several RAID arrays...
I wouldn't suggest it. It'll only take two SSDs to saturate a Thunderbolt bus (or 4 SSDs with 20 Gbit Thunderbolt).
Only if you are ok with them being ass-slow (Score:4, Interesting)
Thunderbolt has 2 lanes of PCIe 2.0 (this new version changes that to 3.0). 10gbps raw data rate, around 8gbps effective. It also has one channel of DisplayPort 1.1a.
So in terms of non-display devices, that means one RAID array of reasonably fast drives can easily overload it. I dunno about you, my RAID controllers usually hand of of 4-8x slots. 1 good SSD can kill half of that on its own. A 10 gig NIC is more than it can handle (look in the thread for a post by someone who implements those). In terms of display, DP 1.1a has enough bandwidth to get you 2560x1600@60fps. Knock on a second display at that rez? Well you don't have enough bandwidth anymore, so you are going to have to reduce rez, or framerate.
Or you could always, you know, have more than one connector and not bitch.
Seriously the one connector thing seems a little silly to me. A marketing solution looking for a problem. Yes, it'll work fine for the kind of stuff Apple likes to do: A laptop connected to a monitor, which then provides USB ports n' such, all over one connector. Ya. Great. Not really that big a deal.
It is not something, at least at present, that you can effectively hang a bunch of shit on one connector and get high performance.
Re: What could I connect this to? (Score:2, Redundant)
Re: What could I connect this to? (Score:2)
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Apple has pissed off all the other CE manufacturers. There will be nothing to plug the other end into. Without general support great features are worthless. Apple is repeating Sony's mistake with betamax. They won't share, thus it will fail. Great technology without support is worthless.
Don't own any professional equipment or work within the NAB world? Do some more research. More and more manufacturers are jumping on-board. https://thunderbolttechnology.net/products [thunderbol...nology.net]
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Apple has pissed off all the other CE manufacturers. There will be nothing to plug the other end into.
Without general support great features are worthless. Apple is repeating Sony's mistake with betamax. They won't share, thus it will fail.
Great technology without support is worthless.
How are Apple "not sharing"?
The technology is owned by Intel, and was developed with the assistance of Apple. Apple also licenced (for free, in perpetuity) the mini displayport connector and port that TB uses. Intel have been promoting it since launch.
Not really seeing how this is Apple not sharing, given that it's not Apple who actually controls the technology, but such is the way with /. posts - the barest tissue of lies covering the bare bones of the truth. The exclusivity deal was over more than a year
New Standards are nice and all.... (Score:5, Informative)
But in the end, it all comes down to cost. Current Thunderbolt displays are rather expensive. Heck, I picked up a dual-link DVI monitor of the same resolution for $275 on ebay! why pay three to four times as much for something with only a small few bells and whistles added on?
Thunderbolt, overall, is great in terms of performance, but it just seems to be well beyond what most folks are willing to pay. It's like that guy who brags about how "My car has a Turbo Kit option from the dealer" but he NEVER SPENDS THE MONEY TO GET IT.
The external drives, the only situation that I'd actually be interested in, are also stupid expensive. In the long run, just better off either using E-SATA, USB3, or internalizing the drives. Same goes for daisy chaining monitors. Want to run tons of monitors? Install more video cards! woo.
no more coffee for me after 5pm, k? ._.
Re: New Standards are nice and all.... (Score:2)
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Re: New Standards are nice and all.... (Score:5, Funny)
Compare a thunderbolt cable to a Cisco 10 gig copper cable and tell me thunderbolt is overpriced.
Sure, but even Denon's $500 ethernet cable [slashdot.org] looks like a great deal compared to Cisco gear.
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Do you remember the launch of USB? It was released in January 1996, and it wasn't until Windows 95 OSR 2.1 in August 1997 that it was even supported by Windows 95, and then only if you bought a new computer (OSR 2.1 was only available to OEMs, it wasn't an update to existing computers that shipped with USB). It wasn't until around 1998 that there started to be a number of USB mice and keyboards available, and most of those were in translucent plastic to go with the iMacs that Apple had released without le
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You can't connect a 4k monitor to a dual-link DVI connector. You need 4 DVI channels for that.
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The external drives, the only situation that I'd actually be interested in, are also stupid expensive. In the long run, just better off either using E-SATA, USB3, or internalizing the drives. Same goes for daisy chaining monitors. Want to run tons of monitors? Install more video cards! woo.
I'll get right on that, as soon as I figure out how to stuff more hard drives and more video cards into my smart watch.
The impetus for Thunderbolt isn't to do existing jobs for today's technology. Rather, I get the distinct impression that it's being over-engineered to be the standard of choice for the next few decades. No, we don't need 20 Gbps throughput and 4K video now, but when you walk into a friend's living room and plug your watch into his video game display, it's going to need the bandwidth to stre
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The display integration thing has hurt it (Score:4, Informative)
Originally Light Peak was supposed to basically just be an external PCIe bus (and it could be internal too). The idea was a connector for things that need lower overhead than USB, and also hopefully eventually a single connector for all kinds of things. With the original goal of 100gbps, that would have been realistic (optical was the original interface design).
However things got changed pretty quick in part for cost reasons, but also because Apple got involved (meaning gave Intel money). Apple is obsessed with less cables because cables = evil in their mindset. So it got changed to be display + PCIe on one cable.
That had negative implications for the bandwidth, but also for the cost and ability to implement it. If it was just PCIe, well then a PCIe-thunderbolt card would be real feasible, and you could add a thunderbolt port by hanging it off the PCI bus. However with display integrated, it needs to work with the integrated display adapter and all that jazz.
Ultimately more cost, and thus less interest. While some Apple types might salivate over the prospect of one cable that goes from a laptop to a monitor, and then a bunch of non-monitors ports on that monitor, most people don't care.
Re: The display integration thing has hurt it (Score:3)
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You can already buy laptops with high end graphics and multiple outputs built in. No need for a clunky external setup. High end gaming laptops can be configured with dual 2gb GTX 680M GPUs or the AMD equivalent. Not exactly anemic.
Existing stuff is Good Enough (Score:3)
http://en.wikipedia.org/wiki/Principle_of_good_enough [wikipedia.org]
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Except for those use cases where it isn't good enough. Which is where thunderbolt is used. People seem to be expecting it to be as ubiquitous as USB or SATA, which is not ever going to happen, because its not a cheap CPU driven consumer-oriented bus.
It exists so that users of portable machines can plug in high speed peripherals. Not single external hard drives, but arrays, fibre channel, external GPUs, etc.
Most users don't do that. And that's fine. But if you DO need to do that, then USB3 just won
Re:Existing stuff is Good Enough (Score:4, Interesting)
It exists so that users of portable machines can plug in high speed peripherals. Not single external hard drives, but arrays, fibre channel, external GPUs, etc.
Most users don't do that.
I feel you have misstated the case by way of apologia. Most portable machines powerful enough to be worth plugging in anything more than a single storage device have more than just one port, so users don't need to plug everything into one port. Using a single cable would be a cool feature, but of the vanishingly few people plugging arrays into laptops, vanishingly few of them need a single cable. Slightly more are willing to pay for the privilege and save a few seconds they weren't going to use anyway, but still not enough to justify the cost of the feature.
The simple truth is that you can build a whole storage server on GigE for less than the cost difference to buy a machine with thunderbolt and external devices. That means it's overpriced, full stop.
watch units please (Score:5, Insightful)
Mbps != MBps
Please stop doing that in article summaries. When you start getting up into large numbers like that you can't just expect everyone to "read what you meant to say."
Déjà vu all over again... (Score:2)
"20Gb/s" will bring useful 10GbE (Score:5, Interesting)
I do 10GbE drivers, and the previous generation of tbolt did not really offer 10Gb/s of usable bandwidth to PCIe devices, it was more like 8Gb/s:
If you recall, tbolt muxes PCIe and Display Port. On the PCIe side, the thunderbolt bridge passed 2 lanes of Gen2 PCIe through to devices. Since Gen2 is "5GT/s" per lane, you'd think you'd have 10Gb/s. But not really, as "10Gb/s" does not take into account PCIe overhead, which can be about 20% of the data transfer rate. So on the original "10Gb/s" thunderbolt, you were lucky to get 7Gb/s transfer rate from 10GbE NIC, once you also add in network protocol overheads.
Having a bus-constrained NIC leads to all sorts of weird problems when receiving data.. With flow control disabled in combination with bursty transfers, you often see far less than the 7Gb/s peak, as TCP hunts around to find the constraint and recover from frequent packet loss events.
It sounds like they've built the new part from 2 lanes of Gen3 PCIe, which should be good for ~16Gb/s of usable bandwidth. This is a very welcome change, as 16Gb/s should be enough for a single-port 10GbE NIC running at full speed, and a disk controller talking to a fast SSD or an external RAID array that can deliver ~750MB/s (bytes) of I.O.
Just don't try to use a bonded 2 port 10GbE NIC, or you're back at the bandwidth constrained problem.
Why not just use 10GbE? (Score:2)
Do you have any insight why they even bother with TB when 10Gb Ethernet already exists and has been deployed for ages? I.e. why not just use 10GbE instead?
It seems like reinventing the wheel for no real gain.
Re: (Score:3, Informative)
Do you have any insight why they even bother with TB when 10Gb Ethernet already exists and has been deployed for ages? I.e. why not just use 10GbE instead?
It seems like reinventing the wheel for no real gain.
When all you have is a hammer...
The main reason for using Thunderbolt over 10Gb Ethernet is that one has a fairly significant protocol overhead (Ethernet) while the other is primarily a bus protocol, and operates at a much lower level than Ethernet does. Each has their strengths and weaknesses, each has their application.
Re: (Score:2)
Re:Why not just use 10GbE? (Score:4, Informative)
Because 10GBe doesn't expose PCI to your peripherals
How about ExpEther [expether.org] technology virtualizes PCI Express over Ethernet.
using pci-e 3.0 on the Qm77 chipset will cut video (Score:2)
using pci-e 3.0 on the Qm77 chipset for Thunderbolt will cut video down to X8 3.0 and some boards may use switchers to get full use out of the pci-e lanes.
http://www.intel.com/content/www/us/en/chipsets/performance-chipsets/mobile-chipset-qm77.html [intel.com]
but only 2 lanes on the TH side still makes it useless for video cards.
Where are the data only cards? mac pro* that needs (Score:2)
Where are the data only cards? mac pro* that may need some kind of voodoo like loop back cable as the dual xeon systems don't have on board video as part of the cpu / chipset?
Some boards do have on board pci 33 based video mainly server boards.
Cables / connectors. (Score:4, Funny)
... Thunderbolt tech enables 4K video file transfer and display simultaneously in addition to running at 20 Gbps. It will be backward-compatible with previous-gen Thunderbolt cables and connectors ...
And even faster with gold-plated Monster cables / connectors !
Still not good enough! (Score:3, Informative)
Why are manufacturers coming out almost-but-not-good-enough connector standards one after another?
Both tablets and TVs are leaving PC displays in the dust, and new PC connector standards that aren't even available yet already don't have the required bandwidth to support displays that are coming to market now, let alone in the future!
For example, support for full 4K video over 20 Gbps is bullshit, because some aspect of the full spec has to be abandoned:
Resolution: 3840 x 2160
Bits per pixel: 30 or 36 (10 or 12 bits per color channel)
3D or High Framerate: 120 fps
This adds up to: 3840 * 2160 * 30 * 120 = 29.8 Gbps.
Sure, you can drop the framerates, but then expect to have a headache viewing 3D. The bit-depth can be lowered, but then expect visible banding when using gamuts that are wider than sRGB. The resolution can't be lowered, because calling 3840 pixels "4K" is already a stretch.
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3D or High Framerate: 120 fps
Sure, you can drop the framerates, but then expect to have a headache viewing 3D.
60 fps only are required for "3D" at 30fps
72 fps is the maximum rate that enhances user experience, above the eyes and brain don't feel there's a difference (for 2D display)
20 Gbps are enough for this.
Re: (Score:3)
3D or High Framerate: 120 fps
Huh? Most video is at 24 fps. Even if we generously triple that, we're nowhere near 120 fps. Hobbit 3D's highest encode was 48 fps which was considered super high quality, and most theaters were still at 24.
Re: (Score:3)
3D is made of two frames, one for each eye, so to display 48 fps 3D stereo you usually need as much bandwith as for displaying 96 fps.
Re: Neat (Score:2)
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The joke, in case you missed it, is that Thunderbolt has ridiculously poor market penetration.
Who cares how many new Intel boards ship with the port, or the tiny fraction of the tiny number of Mac users with a newer unit. There's not much you can actually plug in to the things.
Ask any Mac user if they'd trade the Thunderbolt ports (that they obviously don't use) for some old USB 2 ports.
Thunderbolt, it seems, is the new firewire. Unfortunately for Thunderbolt fans, everyone remembers how firewire turned o
Re: Neat (Score:2)
Re: (Score:2)
Tell me how many eSATA devices came out right after it came out?
Actually a lot, most of them garbage USB/eSATA enclosures for single harddrives sold by chinese manufactures. Probably more than are available now that every x86 motherboard not sold by dell/HP/etc comes with the connectors. Its still the cheapest/fastest way to connect an external drive or two to a PC. A couple of my friends were recently blown away when I compared a little two disk eSATA array I use like a USB harddrive with their USB3 device
Re: (Score:2)
Well, *something* needs to come out to run higher-bandwidth displays and other peripherals. Even if there's not much using it now, at least once the peripherals become more commonplace there will be connector & driver support available if it goes through all that now.
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A video card can max out the bus and be underpowed (Score:2)
A video card can max out the bus and be underpowered as Thunderbolt is only like pci-e X4.
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SO basically, they've increase the voltage by 400%, dropped the current by half, added some more wires and made some special new connectors? Oh and given it another name which is Nature_Scary_Thing . Electricity_Word to match their previous hipster names? I'm not seeing the big deal here yet.
Then you need to get your eyes checked. It also offers display port pass through and access to the PCI bus. Does USB3 offer any of that? Oh, and you can get USB3 and Gigabit Ethernet through a Thunderbolt dock if you really want to.
In a nutshell, USB3 can be a subset of Thunderbolt but not the other way around.