VIA's New Nehemiah M10000 Processor Reviewed 265
Joseph Wharton writes "Mini-ITX.com has a review of VIA's new Nehemiah M10000 EPIA-M motherboard and processor. Some of the new features include a full-speed floating-point unit (finally!), SSE instructions, 64KB of full-speed L2 cache, and (get this) a hardware-based random number generator. Also, there's IO/APIC support in these new procs, potentially paving the way for dual EPIA boards."
Re:Makes for a great jukebox (Score:3, Informative)
-> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ite
I got 2 cases for $25 (including shipping), got a 80gig HD, wireless adapter and IR keyboard.
The s-video out leave a little be desired, but it is probably my TV.
M.B.
a bit about the cpu since it's /.ed (Score:5, Informative)
"Nehemiah is the next generation C3 CPU, and features a number of improvements over the Ezra-T C3 used in all previous EPIAs. It has The 20.5 million transistors, and uses a 0.13 micron process. For comparison, a Barton Athlon or Northwood Pentium 4 have about 55 million transistors, and recent GPUs have over 100 million transistors.
The Nehemiah is designed to work at clock speeds of 1GHz and beyond - the Ezra-T is designed at up to about 1GHz.
Nehemiah has a die size of 52mm2 - the world's smallest x86 processor. It has been designed to minimize power consumption and optimise heat dissipation - VIA call this "Coolstream". Some active cooling is still required, but not very much. Let's hope for a Nehemiah Eden C3 version.
The Nehemiah features SSE instructions instead of the 3DNow! instructions featured on previous C3s. This should bring enhanced performance in 3D applications, which are optimised for more modern SIMD instruction sets. SSE optimised image processing applications should also benefit.
Full Speed FPU - the Nehemiah has a full speed floating point unit for the first time. The Ezra-T has a half-speed FPU. Floating point calculations are used heavily in 3D rendering, multimedia, and streaming applications.
Enhanced 64KB Full-Speed Exclusive L2 cache with 16-way associativity. An exclusive L2 cache gives a larger effective total cache size as it doesn't replicate the contents of the L1 cache. The more cache available, the more chance there is that program loops can run in cache and not comparatively slow main memory.
StepAhead Advanced Branch Prediction - Looks ahead and gathers the data needed to optimally run applications
A hardware based random number generator (RNG) has been added. This creates true random numbers from the random electrical noise on the chip. This is of much use in security applications, allowing a strong cryptographic key to be generated. VIA call this the "PadLock Data Encryption Engine".
Future Nehemiahs will feature IO/APIC support. An Advanced Programmable Interrupt Controller (APIC) provides multi-processor interrupt management - dual processor EPIA anyone?
The Nehemiah is available in EBGA or Socket 370 packages - both are low profile and require less board real estate."
Website is slow, here's the Conclusion (Score:5, Informative)
The Nehemiah M10000 is a very welcome speedbump to previous EPIA Ms. The full speed FPU and SSE instructions give it that extra boost needed to playback any media type we could find - without optimisations or quality tradeoffs.
Although we have benchmarked the Nehemiah as fully as possible (and gained some useful comparisons with earlier EPIAs), it must be remembered that this is not everything that the EPIA is about. In use, all the EPIAs are nippier than their benchmarks would suggest, due to their supporting chipsets. EPIA Ms (of which the Nehemiah M10000 is of course the current ruler) are powerful multimedia playback machines. An EPIA M in a low profile case looks great next to a TV, where a regular PC or even Cube SFFPC will look out of place, overpowered and overpriced for the task. Add a PVR card and you have a perfect HTPC.
As an inexpensive upgrade path for ageing x86 machines, EPIAs are ideal - schools, libraries and internet cafes can benefit from low noise and low power consumption machines. Under Linux, even the EPIA 5000 can perform tasks such as file serving with ease all at the cost of a SCSI card. EPIAs have accidentally gained a following in the modding community (witness the many projects on this site). Although such mods probably represent a small proportion of sales, they show the versatility that this form factor has, and the enthusiasm of its owners. No other manufacturer offers a range of mainstream low noise motherboards at this size and price with these facilities. Other manufacturers will be watching with interest.
Re:Makes for a great jukebox (Score:5, Informative)
I found the M10000 for $182 at directron [directron.com], and here's what you get for your money:
VIA C3 1GHz processor
10/100 Ethernet
Firewire
TV-OUT (S-video, RCA(PAL and NTSC))
6 Channel Audio
Not a bad deal, methinks. Probably can be found cheaper, but I didn't want to look too hard.
Re:New Via (Score:5, Informative)
Hardware support for RNG is a "Good Thing(TM)", and doesn't necessarily have anything to do with the "Trusted Computing Platform" or whatever the DRM flavour of the day happens to be !
Re:64KB cache? (Score:4, Informative)
Re:slashed (Score:5, Informative)
Price around $150-200. Look at http://www.hushtechnologies.net for an integrated version.
Hardware rand is good. I'd bet OpenBSD will support it.
overclocking with Linux? (Score:1, Informative)
Is there a Linux program with equivalent functionality? It would be nice to bump my M9000 ("borderline" in several of the listed benchmark results) to a full gigahertz and into the (acceptable) green level instead of yellow
Re:slashed (Score:2, Informative)
Why Via names stuff after Christian Mythology (Score:5, Informative)
Dual boards have already been announced. (Score:3, Informative)
before we start griping... (Score:4, Informative)
Re:How is your experience? (Score:4, Informative)
Re:Book of Nehemiah: (Score:2, Informative)
They both have a book named after them.
The CEO of VIA is a fundamentalist christian and that is why he uses biblical names.
So he's not Jewish, but are bible consists of the Jewish holy books and the new testament.
And you gotta admit those Jewish names sound much more exotic then "James" or "John" (Though if we didn't translate those names they would be in Jewish "Ya'akov" and "Jochanan" respectively, which also sounds cool).
Re:Makes for a great jukebox (Score:5, Informative)
More info from Via Press Release (Score:5, Informative)
Notable features:
Re:More info from Via Press Release (Score:2, Informative)
I suspect (Score:3, Informative)
Low power cpu - A great thing (Score:3, Informative)
Hey if you could reduce that to 35W you are not only geting 35W less for the cpu you are also lowering the power consumtion on the air condition. An office building that starts to take the power consumtion serius could save lots of cash on electrical bill and probably some on the environment to
Re:HW Random Numbers ... (Score:4, Informative)
The way good OS's generate random numbers is by accumulating a pool of entropy. They typically use a wide variety of inputs and mix them together. That way, if an attacker is able to observe or predict some of the inputs, there's still some more than they can't break. Unfortunately most computers only have expernal sources of randomness; things like ethernet packet timing or keyboard/mouse movement. These things are relatively easy to observe and/or tamper with. (As an aside, does anyone know if any OS uses things like processor temperature/fan speed as entropy inputs?) The on-chip RNG is may not be a really excellent source of randomness, but it's very hard for an outside observer to monitor. (And, it's quite possible that it really is an excellent source of randomness.) Even if it is weak, it's another addition to the entropy pool, and thus strictly good.
Re:HW Random Numbers ... (Score:4, Informative)
Bubba Says, EPIA M10000, Very Nice!!! (Score:2, Informative)
Re:Low power cpu - A great thing (Score:2, Informative)
Re:HW Random Numbers ... (Score:5, Informative)
Actually, the analysis [cryptography.com] I've seen suggests that the HW RNG is very good. It can generate RNGs at 30-50 Mb/s, with an estimated 0.78-0.99 bits of entropy per output bit. With a built in "whitener", it can generate 4-9 Mb/s with an estimated 0.99+ bits of entropy per bit. If you use it as an entropy pool to feed a strong PRNG, which is the recommended mode of use, it should be a very effective source of cryptographically useful randomness.
Re:64KB cache? (Score:2, Informative)
Re:Why Via names stuff after Christian Mythology (Score:5, Informative)
Nehemiah was a 6th or 5th century BCE govenor of Judea during a time when Judea was under Medo-Persian rule. I would describe Joshua, Samuel, and Nehemiah as figures from Jewish history rather than Christian mythology.
Of course, in the 19th century it was popular to assert that public figures mentioned in the Bible are figments of the writers' imagination, but this view seems to be largely discredited. The names of too many of these 'fictituous characters' showed up on monuments and public records uncovered by archeologists.
Re:Makes for a great jukebox (Score:3, Informative)
I suppose something running at that speed was state-of-the-art back around 2001. I have no need or plans to upgrade for at least a year, maybe longer.
obvious disclaimer - I do not game.
Re:Makes for a great jukebox (Score:3, Informative)
Reminds me a bit of the slippage with the 2.2 and 2.4 kernels.
VIA's reluctance to support Linux (Score:5, Informative)
Re:Wahh, now with working link... (Score:3, Informative)
Hmm must be new here =P. After a certain amount of characters slashdot will insert a space. This was to stop those posts where there was just a long line of letters that made it so you had to horizontally scroll for miles and generally messed up the page.