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AMD Hardware Technology

AMD Predicts End of 32-bit Processors 587

DDumitru writes "Infoworld reports that AMD predicts it will stop producing 32-bit processors by the end of 2005. By depending on price cuts for Athlon-64 and Opteron, AMD is predicting that it's sales of 32-bit CPUs will fall off and obsolete 32-bit systems in less than 3 years. This is either a push forward, or a tactic to try to capture the 64/32 bit standard leaving Intel in the rear. Or it could just be hype." I'm not in a hurry to ditch any of my 32-bit machines, so long as I get them replaced by 2038.
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AMD Predicts End of 32-bit Processors

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  • by Anonymous Coward
    AMD now confirms: 32 bits is dieing.
  • You know..... (Score:4, Insightful)

    by inteller ( 599544 ) on Tuesday November 18, 2003 @04:17PM (#7505366)
    .....forgive me for being captain obvious, but my old A7M266 board runs just fine with XP 2000+....they can continue dropping the price on these suckers so that eventually I can max it out with 2600+s and also plop two MP 2600+s in my A7M266-D.....I don't even use half the capacity now...I'll be blown away when I plop those in for $50 each in a year or so.....keep predicting the demise AMD, it's all fine with me.
    • Re:You know..... (Score:5, Insightful)

      by addaon ( 41825 ) <addaon+slashdot@nOsPAM.gmail.com> on Tuesday November 18, 2003 @04:20PM (#7505413)
      You have to realize there's a certain minimum cost to retail processors, the same way there is to, say, video cards. You can't sell an AGP video card for $30 MSRP. The cost of packaging, shelf space, support, etc. outweighs the cost of hardware by so much at that level that, even if the hardware were essentially free, the product price would be around $30 or so. Ditto for processors; once a processor goes below about $40, it seems like it's no longer worth producing; the cost of packaging and so on outweighs any possible further reduction in price. On the other end, at $5 or so they become worth producing again (see PICs and such) because, at that point, no packaging or support is expected... but don't expect to ever find a nice $40 CPU to put in your motherboard.
      • Not a new $40 CPU, but there's plenty of used ones out there. Someday I'm going to pick up a 10 Ghz processor and motherboard for $20.
      • Not quite $40 but close enough for government work. Of course once you including shipping you are looking at $50.

        http://www.computerbrain.com/cbisys/items.asp?main =CPUs&cat=AMD_Athlon_XP_CPUs&mfr=all&class = [computerbrain.com]
      • Re:You know..... (Score:5, Informative)

        by tomhudson ( 43916 ) <barbara@hudson.barbara-hudson@com> on Tuesday November 18, 2003 @04:45PM (#7505713) Journal
        poster wrote:
        You can't sell an AGP video card for $30 MSRP
        Why not? GeForce 64meg w. tv-out are retailing for about that now.
        Ditto for processors; once a processor goes below about $40, it seems like it's no longer worth producing;
        You can get a motherboard w. duron 2000 cpu for $100 CAN (about $75.US). Split the cost in 2 - half for mb, half for cpu, we are under the $40.00 price point already.

        Same w. CD-ROMS at $20.00 new, etc.

      • Re:You know..... (Score:3, Informative)

        The cost of packaging, shelf space, support, etc. outweighs the cost of hardware by so much at that level that, even if the hardware were essentially free, the product price would be around $30 or so.

        Then:

        On the other end, at $5 or so they become worth producing again (see PICs and such) because, at that point, no packaging or support is expected...

        I'm not so sure I agree with this logic. You can buy OEM CPUs today, even for high-end CPUs, with no packaging other than a small grey box (no sink/fan/doc
      • Re:You know..... (Score:3, Insightful)

        by Jeff DeMaagd ( 2015 )
        Well, there are people that thought that one couldn't make a PC for less than $2000 for many of the said reasons.
      • Re:You know..... (Score:3, Insightful)

        by jaoswald ( 63789 )
        $5 isn't just a different price point---the PIC is a different beast entirely. It is dramatically biased toward low transistor count and low usage of Si real estate. Try to find a PIC with more than 8k of RAM and you'll see what I mean. You can also get PICs in 8 pin packages. I don't know very much about the fab processes for either, but I'm guessing the layers of interconnect and critical fab requirements on a PIC are very few compared to an Athlon.

        A modern main processor has tremendous need for I/O and
    • Re:You know..... (Score:5, Informative)

      by ivan256 ( 17499 ) * on Tuesday November 18, 2003 @04:45PM (#7505711)
      I run my A7M266-D, with 2 Athlon MP 1800+ processors, plugged into a Kill-A-Watt meter. All signs point to it being cheaper to buy a dual opteron over the not so long term simply for the power saving features at idle. I figure that the new machine would pay for itself in less than a year. I'll be buying as soon as there are new opterons readily available so the price on the old ones will be low.

      Perhaps you should try being captian not-so-obvious and look and see how much it costs to leave that dual Athlon MP, which uses about the same amount of power at idle as at full utilization, on all the time. Also, if you don't need the capacity, why did you buy it in the first place?
  • bah (Score:5, Funny)

    by fjordboy ( 169716 ) on Tuesday November 18, 2003 @04:17PM (#7505375) Homepage
    you young-ins and your 32 bit processors...I'm using 16 bit and I have no plans on upgrading now. You'll be back...
    • by burgburgburg ( 574866 ) <splisken06.email@com> on Tuesday November 18, 2003 @04:23PM (#7505443)
      You're soft. Why, in my day, we sent rockets to the moon with 8-bit processors, and we considered ourselves lucky to have them.

      16-bit? Why don't you just go lay down on a feather bed and let servants peel your grapes for you? Harumph.

      • by shut_up_man ( 450725 ) on Tuesday November 18, 2003 @06:42PM (#7506718) Homepage
        Listen you cocky young whippersnapper, in MY day we broke the Hun's codes with 1-bit difference engines the size of buses, running on vaccuum tubes infested with poisonous moths bigger than your hand. We entered our programs with sledgehammers, completely from memory, during air raids, in the dark, while we were completely drunk!

        And you tell the kids of the day that, and they don't believe you...
    • You expend too much, youngster. My 128K 8 bit Apple II still works fine - I have Visicalc for my spreadsheet needs and the CPM card allows me to use the wonderful WordStar, the king of the word processors. Who needs anything else?
      • Comment removed based on user account deletion
      • I have Visicalc for my spreadsheet needs and the CPM card allows me to use the wonderful WordStar, the king of the word processors.

        What is sad is that I'm only 30 and I can tell you that Ctrl-B reformated a paragraph in WordStar. I usually used wsn, however, to edit my C programs, which I then compiled with my lattice C compiler. Those were the days when men were real men and clocks ran at 4.7MHz.

      • You punk - you should stick with native Apple ][ word processors, like Magic Windows ][.

        Punk.

        Oh yeah, get rid of all that extra RAM - you don't need anything more than 48K! :)
  • Obvious (Score:2, Insightful)

    by Geccoman ( 18319 )
    With the prices rapidly dropping, and the performance (for the most part) seeming to be worth the money spent, this seems like the obvious direction. As far as replacing 32 bit machines, its just a matter of time, anyway.
  • by burgburgburg ( 574866 ) <splisken06.email@com> on Tuesday November 18, 2003 @04:19PM (#7505397)
    Good news: I agree in the quickly coming obsolescence of 32-bit chips.

    Bad news: I'm getting a dual 1.8Ghz PowerMac G5, baby! Yeah!

    I have to go lay down now.

  • by PierceLabs ( 549351 ) on Tuesday November 18, 2003 @04:20PM (#7505400)
    Unless AMD or someone else has a massive gain with respect to being able to cool these monster CPUs along with shrinking the die so that they are suitable in general consumer electronics, I don't think anyone is going to stop producing smaller/cooler CPUs. While the 64 bit chips are great and all, I just can't imagine seeing one in a phone (for example) or even a PDA in the timeframe that they suggest.

    Maybe they meant to include that they won't go into these markets which limits their desire to produce low footprint, low heat chips.
    • by Anonymous Coward
      Slashdot headline is (once again) misleading. AMD predicts that THEY will stopping manufacturing 32bit PC prosessors (Athlons) by the end of 2005.

      AMD has already low-power chip for PDAs and it won't be 64bit anytime soon.
    • You're absolutely right. 32b processors will continue to enjoy a healthy uptake in the embedded market. In fact, many embedded companies are still selling 8b and 16b processors en masse.
    • I'm not sure precisely what you mean about "consumer electronics". You can always underclock a chip to the point that it won't generate that much heat. I've heard of people doing that with really an "old" 1.8Ghz, and underclocked it (like you would with a laptop), way, way, way down, and used it as a part in a no moving parts router. (I've got a machine that is a powersupply, and a CPU fan away from a no moving parts CPU). I just haven't taken the time to find a 150Watt powersupply, and underclock the 1
      • by PierceLabs ( 549351 ) on Tuesday November 18, 2003 @04:58PM (#7505849)
        If you're going through all this trouble to down clock a processor, wouldn't it make more sense to just use something that runs at a lower clock? Its like putting a Farrari engine in a car that is only ever intended to move at 35 MPH - sure you could do it, but wouldn't it make sense to just get an engine more suited to the task.
        • The low-power CPUs are usually low-power in both senses of the word; they may use less power, but they also do less per clock cycle. Your non-low-power CPUs like the Athlon XP or P4 simply do more per clock cycle than, say, VIA EPIA, which isn't even superscalar.

          The Athlon XP does more per cycle than the P4; the P4 does more per cycle than the C3. Think of the C3 as a 1.5 liter toyota motor, the Athlon XP as a V8, and the P4 as a turbo straight six, if you must apply automotive metaphors. The C3 is smal

      • Many processors use dynamic logic that prevents them from operating reliably below a specified clock rate. Check the spec sheet for your processor before you underclock it.
  • adaptability (Score:5, Insightful)

    by DenOfEarth ( 162699 ) on Tuesday November 18, 2003 @04:20PM (#7505401) Homepage

    As a user of open source, I think this shouldn't really be a problem at all, should it? I mean, once gcc can compile 64-bit code, than we should simply be able to recompile all of our current apps for these new processors, shouldn't we? I'd be happy if someone out there could point me out as not being in the know...

    • Re:adaptability (Score:5, Informative)

      by RevMike ( 632002 ) <revMike@gmail. c o m> on Tuesday November 18, 2003 @04:27PM (#7505503) Journal
      As a user of open source, I think this shouldn't really be a problem at all, should it? I mean, once gcc can compile 64-bit code, than we should simply be able to recompile all of our current apps for these new processors, shouldn't we? I'd be happy if someone out there could point me out as not being in the know...

      The Linux-on-Alpha project already did all the heavy lifting needed to run 64 bit almost ten years ago. Linux and *BSD is already running 64 bit on PowerPC. Virtually any package you can download that has an active support community is already 64 bit ready.

    • Re:adaptability (Score:4, Interesting)

      by Neon Spiral Injector ( 21234 ) * on Tuesday November 18, 2003 @04:30PM (#7505546)
      That pretty much is true, along with the fact that GNU/Linux has been running on other 64-bit platforms for many years now.

      The biggest problem I'm having building a custom install for my AMD64 machines is the fact they have 32-bit compatiblity. On the Alpha is was easy, the lib directories contained 64-bit libaries, because the machines were 64-bit, period. But with the AMD64 the lib dirs are still supposed to contain the 32-bit libs, with the 64-bit versions installed in a lib64 variant. This causes problems because almost no libary packages are setup to compile twice once in 32-bit and then over again in 64-bit mode with a simple ./configure.
    • Re:adaptability (Score:5, Interesting)

      by Anonymous Coward on Tuesday November 18, 2003 @04:41PM (#7505679)
      I am not sure what you mean :
      1) Gcc 3.3 actually compiles to AMD64 (i.e. Athlon 64 and Opteron)

      2) Gcc 3.3 generates pretty fast code too, as you can see on spec.org where IBM submitted results obtained with an Opteron, Suse Linux and GCC 3.3 : the baseline is above 1100 whereas Apple said that a Pentium 4 at 3.06GHz only achieves 880 with GCC 3.3. So it seems that the Opteron is a better processor for people who use GCC.

      3) I write this text on my Athlon 64 running Mandrake 9.2 RC1 for AMD64. I can tell you that there is litlle left to adapt because it works pretty well. In fact you could hardly tell the system is the AMD64 version...

      4) running 32 bit programs works fine : I have to use Java 1.4.2 for Linux x86 since the AMD64 version is not available. To do that, you just run the 32bit Linux program and it works at native speed.

      As a conclusion, the Athlon 64 is good but it is still expensive (I paid 450 euros for my processor).

  • I'm not in a hurry to ditch any of my 32-bit machines, so long as I get them replaced by 2038.

    I hope the editors realize that 32bit processors CAN process 64 bit numbers. In Java, for example, the date is handled by a 64bit number that tells the number of milliseconds since Jan 1, 1970. Amazingly enough, that clock won't run out for another few billion years.

    Oh, and most Unixes have fixed the time problem. The real issue is getting the programs to switch over to the new APIs.

  • I'm not in a hurry to ditch any of my 32-bit machines, so long as I get them replaced by 2038

    True, but it is not reasonable to think that two years from now someone would choose to buy a new desktop machine that is reasonably powerful without it being 64 bit. By that time the price points for 64 bit will be down substantially.

    I do believe that 32bit will have a somewhat longer life in the laptop market, as well as the low power/small footprint niche of the Mini-ITX form factor.

  • "No one will ever need more than 32 bits of processing."
  • by G4from128k ( 686170 ) on Tuesday November 18, 2003 @04:24PM (#7505453)
    I wonder what applications will drive the adoption of 64-bit computers? Besides playing the latest games, most real-world applications seem to run fine on older 32-bit processors, even sub-GHz processors. AMD's prediction is self serving.

    That said, I have my eye on a new dual G5, so I guess I've bought into the hype that size (word size) matters.
    • by WoTG ( 610710 ) on Tuesday November 18, 2003 @05:09PM (#7505970) Homepage Journal
      I think 64 bit will take root at the servers and quickly force 64 bit processors out to the workstations. Even now, 4 GB of RAM in a server is a constraint in many businesses, and it will be much more pronounced in only a couple years.

      Given this situation, Microsoft is bound to polish and market 64 bit Windows Server (which will soon be available for x86-64) because they know that 64 bit Linux distros are out or will soon be out. MS's place in the server world is far from secure, so it's in their interest to be as competitive as possible in this regard.

      So, with servers (and high-end workstations) moving to 64 bit really soon, and the fact that one of x86's strengths is in volume manufacturing, the natural step (especially for AMD) is to move all chips to 64 bit in a fairly short time frame. Besides, the incremental cost per CPU is minimal, AMD claims somewhere around 10% die space. And, it takes more money to design and manufacture separate 32bit and 64bit chips than it does to sell a single product line.

      I guess I don't think that any "killer app" is really required above and beyond what is out there already. Big fat database, email, and application servers that could use more than 4 GB of memory NOW.
  • by zaqattack911 ( 532040 ) on Tuesday November 18, 2003 @04:24PM (#7505457) Journal
    I'm betting by 2005 my 32bit cpu well become self-aware and upgrade itself.
  • maybe.... (Score:2, Interesting)

    by mwilli ( 725214 )
    I don't think that they are predicting that all 32-bit processors will be phased out by then, but will probably not be manufactured anymore. It's the next logical step in the progression of microprocessors. 32-bit will phase out just like the 16-bit, whether it will be in 2 years or no we will have to see, but my comp is good for at least 5 more years as is.
  • Draw the line. In little more than 25 years we've gone from the 4004 (4-bits) through 8-bits (8008 and successors) to 16-bits, 32-bits, and now 64-bit microprocessors. Why stop now. We already have 128-bit and 256-bit wide data and memory busses. How long until a true 128-bit microprocessor?
    • Most of it is hype. The biggest problem aside from lack of address space is the fact that the x86 instruction set sucks and was never meant to run this fast. That's why you get a 10x or more difference for power consumption of ARM and x86 cores.

      128-bit ALU's won't be useful at all, ever. Aside for things like bignum math co-processors you don't need it. Heck for the most part 32-bit ALU's are over kill. For example, when I hit submit on this form it will prolly strlen() the buffer. Chances are I won'
  • Hell 16 bit processors are alive and well!

    most industrial PC104 form factor PC's are running 386 processors. many embedded systems, the stuff that does real work and critical applications are 16 bit or lower processors.

    Maybe AMD is dropping the lower bit processors, but Intel sure won't as long as there is a demand for them.

    • by njdj ( 458173 ) on Tuesday November 18, 2003 @04:42PM (#7505687)
      Hell 16 bit processors are alive and well!

      most industrial PC104 form factor PC's are running 386 processors.


      The 386 is a 32-bit processor.
      (There was a later variant called the 386SX that used a 16-bit bus, but it wasn't popular, and anyway the CPU was still 32-bit).
    • Maybe AMD is dropping the lower bit processors, but Intel sure won't as long as there is a demand for them.

      More than likely they'll leave them to the niche market. Via [via.com.tw], for instance, concentrates on the lower power-small footprint-minimal cooling market.
  • I can see it (Score:5, Interesting)

    by steveha ( 103154 ) on Tuesday November 18, 2003 @04:29PM (#7505527) Homepage
    AMD has said that next year they will be shipping Opteron chips that only dissipate 30 Watts. An opteron runs 32-bit code faster than an Athlon, and totally owns if you run it in 64-bit mode. If you could buy a chip like that, for the same price as an Athlon, why would you want an Athlon?

    (If there was a problem getting a good motherboard for the Opteron, that would be a good reason to still want Athlons, but there isn't a problem. There are plenty of good motherboards for Opteron and Athlon64 already.)

    steveha
  • Amazing (Score:2, Troll)

    by Kelz ( 611260 )
    If they are so great at predicting future trends, why didn't they realize what the mainstream computer user wants?

    They, IMHO, lost the Intel/AMD war because they tried to convince people that (truthfully or not) their processors, though with less MHz or GHz, were faster than Intel's. This may have been true but the average user just wants it to look good on paper. Likely the only reason they are turning a profit is because of the relative expensiveness of the new Intel processors compared to AMDs.
    • Re:Amazing (Score:5, Insightful)

      by Loki_1929 ( 550940 ) * on Tuesday November 18, 2003 @05:10PM (#7505978) Journal
      "This may have been true but the average user just wants it to look good on paper."

      (Bob) "Hey, Bill. I just got a new computer!"

      (Bill) "I was thinking about getting a new one myself. Did you get one of those new Pentium 5 ones?"

      (Bob) "Nope, one of the tech guys at work was telling me how those are only 32 bits, so I got one of these Athlon ones. They're 64 bits."

      In the battle of bigger vs better, AMD has 64, Intel has 32. AMD introduced the model numbers for precisely the reason you raised - the average user has no idea what actually influences performance. The new AMD CPUs are set to ramp up in clock frequency very quickly, which will cause the model numbers to shoot up fast as well. What you'll end up with is Average Joe Consumer looking at Athlon64 4400+ & Pentium(?) 4Ghz. AMD is likely to pump up the "Their's is 32, our's is 64!" marketing, and regardless of whether the consumer has any clue whatsoever what that means, it makes AMD look better on paper.

    • Re:Amazing (Score:5, Interesting)

      by Zathrus ( 232140 ) on Tuesday November 18, 2003 @05:18PM (#7506050) Homepage
      This may have been true but the average user just wants it to look good on paper

      Ok, so go ask Average User how fast the CPU in the HP Pavilion 3000+ is. Odds are they'll say 3.0 GHz, which isn't true but is proof of AMD's success in "looking good on paper".

      The issue that AMD has long had is poor motherboards. Via had a long, long time with poor chipsets/drivers which lead to crashes (this pretty much ended with the KT133A, but it's popped up every now and then since). They also had issues with MS not including the drivers for the chipsets with the OS (which is a death knell, especially for something like a motherboard -- the boards worked without the drivers, but they were dog slow). They also had some thermal problems, which were wonderfully overhyped by the hypemasters at Tom's Hardware (no, I won't provide a link -- if you don't know it you're better off).

      Nowadays those issues are in the past. Nvidia has been producing rock solid motherboards for over a year now. Via has finally worked out its issues as well. Via even has chipset support in XP (and Win2k/ME IIRC). Anyone who spouts heat issues is an idiot -- Intel chips now have higher power consumption and heat dissipation than AMD does at the same effective processor speed.

      AMD's had issues breaking into corporate PCs though, and still does. Most PCs sold for corporate use are Intel only. They've also had problems breaking into the notebook arena, and they're making a slow go of it in both areas. AMD has long had the enthusiast market, particularly the value-oriented gamers, but it's by no means a lock, and it's really not a very large market.
  • by dtjohnson ( 102237 ) on Tuesday November 18, 2003 @04:30PM (#7505545)
    I think that AMD is just saying that *they* will stop making 32-bit processors by 2005 but not that 32-bit processors will be dead by then. It is reasonable for AMD to end production of the 32-bit processors because AMD does not have a lot of manufacturing capacity and they will want to make their 64-bit processors rather than 32-bit processors with the capacity that they do have. Also, AMD's 64-bit processors are also better 32-bit processors than many of the 32-bit processors that have been sold in the past.

    The 32-bit processors will obviously be around for a long time yet but they just will not be made by AMD. Intel will keep making them and probably other companies such as VIA and that chinese 'red storm' company (can't recall the name of it) will make them for many years to come. The old 16-bit 286 processors are still made today, even though Intel stopped making them years ago.
  • I'm sure our good friends at intel will have a $200 itanic for the home and desktop market by then that will only dissipate 250W of heat or something. So don't all go rushing out to by these newfangled AMD thingies at once...
  • The company [AMD] expects to ship between 50 and 100 million 64-bit processors over the next three years

    I can't think of anything more likely to give Intel heartburn than this.

  • AMD is only speaking of the PC industry #1. 32 bit processors will start fading out in the same way 2x cdrom drives did, or 1 gig hard drives. They will keep making 32 bit processors, but when 64 bit processors reach a certain price customers will have no reason to keep buying 32 bit. Plus none of it mentions anything about throwing away existing 32-bit machines. This "end of 32-bit Processors" crap is just the usual slashdot propaganda.
  • Yes, but, (Score:4, Interesting)

    by gillbates ( 106458 ) on Tuesday November 18, 2003 @04:39PM (#7505654) Homepage Journal

    The real question is how long will it be before the BIOS is 64 bit protected mode?

    Probably never.

    I still write in 16 bit assembly because the BIOS still runs in 16 bit mode. It would be nice if AMD broke backward compatibility for once and started off with 64 bit firmware so I could at least write 64 bit assembly. The mixed-mode stuff (16 and 32 bit) that I would have to do for OS programming is getting ridiculous:

    • I could write in 32 bit mode, if I wanted to write drivers for every single conceivable piece of hardware out there. While this would be ideal, it is far from possible. And since the processor starts in 16 bit mode, I'd still have to write at least a little real mode assembly.
    • I could still use 32 bit mode if I wanted to use a call gate to call the 16 bit code of the BIOS, or:
    • I can write 16 bit code, call the BIOS directly, and only have to worry about the 64k and 1M memory limitations.
    I don't like any of these solutions, but it's a lot easier to fit kernel modules in 64k than it is to write call gates for BIOS services. The reason why I like using the BIOS is because it is standard across differing computers - I don't have to write a different driver for every single video card and hard disk controller that I might come across. Plus, if it uses the BIOS, I can be reasonably certain that it will run on an arbitrary PC; I don't have to do any hardware probing or detection.

    Well, it's a pipe dream, I guess.

    Those of us who like to program their own hardware took a serious hit when the 32 bit OS became the standard. We either ended up jumping through hoops to use the 16 bit BIOS from protected mode, or we just decided not to use more than 1 megabyte of the machine's memory. If they had installed 32 bit BIOS's when the 32 bit processors came out, we would never have had these problems.

    But no, we still have a 16 bit BIOS because the manufacturers are afraid that some fool might want to run DOS on their 3GHz Pentium 4 with 1 GB of RAM....

  • The announcement is pure marketing, hyping their 64-bit chips.

    The reality is that old processors get replaced by new ones, and once high-end chips end up as low-end chips - nobody buys K6s anymore. AMD's just saying that they'll continue phasing out old processors, leaving only 64-bit-capable ones.

    AMD's current lineup spans K7-era chips at the low to mid range and K8s at the top. In two years, they'll have K8s at the low to mid range and K9s (or whatever) at the top.

    AMD has a competitive 32-bit chip, w
  • Embedded Market (Score:2, Insightful)

    by tombou ( 233875 )
    Even when the desktop market moves on completely to 64 there will still be the embedded market that can use the 32 bit procs for processor intensive applications.

    The new via eden is attractive ...

    http://biz.yahoo.com/bw/031014/145512_1.html
    ht tp://www.via.com.tw/en/Products/eden_n.jsp
  • by Space cowboy ( 13680 ) on Tuesday November 18, 2003 @04:47PM (#7505743) Journal
    According to Computer Shopper, AMD and Cray are collabarating on a new chip interconnect method, which they claim runs 20x the speed of current solutions, called 'Red Storm' ...

    Just a 'news in brief' item, so no real details...

    Simon
  • by ErikTheRed ( 162431 ) on Tuesday November 18, 2003 @04:57PM (#7505839) Homepage
    I think that the key point of this article is that developers can now develop and test 32- and 64-bit apps on the same machine. With many high level languages (and even, to a certain extent, C/C++), it's fairly trivial to develop a version that compiles under both archs, especially if you're starting a new project (just have to watch your int & pointer sizes, etc). I think that a key attraction in CPU-intensive apps (games, multimedia creation/editing, scientific, etc.) will be the extra 8 general purpose registers available in 64-bit mode. They can produce order-of-magnitude performance increases for parameter passing, many inner-loops, etc.
  • by dougmc ( 70836 ) <dougmc+slashdot@frenzied.us> on Tuesday November 18, 2003 @08:06PM (#7507343) Homepage
    I'm not in a hurry to ditch any of my 32-bit machines, so long as I get them replaced by 2038.
    64 bit cpus may indeed handle 64 bit numbers internally rather than 32 bit numbers, but that's hardly a magic bullet for the y2038 issue.

    If your filesystem only allocates 4 bytes to a timestamp, it's going to break in 2038, 64 bit cpu or not. Any file formats or structures that only allocate 4 bytes to a time value will have the same problem -- and there is a LOT of them out there. And to make matters worse, if you change the format to allocate 8 bytes to the timestamps, then it's almost certainly not going to be compatible with old software anymore.

    Also, porting things to use 64 bit cpus rather than 32 bit cpus isn't particularly easy. Yes, you can run in `32 bit mode' and they'll work fine, but many (mostly C) programs work under the assumption that integers are 4 bytes and so are pointers. In a 64 bit cpu, running in a 64 bit mode, this is not true. This really isn't a big problem, however, as the AMD 64 bit cpus can and do emulate a 32 bit cpu as needed.

    And we don't need 64 bit cpus to fix the problem anyways -- we could use 2 32 bit ints to store the time stamp if we wanted to. It's a bit more work, but it could certainly be done, even with 32 bit cpus.

  • by linux11 ( 449315 ) on Tuesday November 18, 2003 @08:08PM (#7507353)
    The doubling every 18 months seems to apply to workstation memory just as much as it applies to CPU speed. This shouldn't be a surprise since more applications tend to depend on memory for speed than raw CPU cycles. After all, if a section of code/data needs to be swapped from disk back into memory, all a faster processor can do is more NOOPs or context switch to a different process. So, while around 1980 a nice home computer would need about 64k to be "beefed up," now that about 15 cycles of 18 month periods have passed we are seeing beefed up workstations having around 2GB of memory or 64k*2^15. Next cycle is 4GB which maxes out the address space for 32 bits. We nearing the point where "power" users will start expecting workstations with over 4GB of memory and that definately calls for phasing out 32 bits on the desktop/laptop.

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