Time for New Server CPUs!

While the network fabric and optimized motherboard designs were the key features of the micro server, it is clear that there is room for a “specialized micro server CPU” between the current anemic Atoms and the low power Xeons and Opterons.  AMD announced last week the quadcore Opteron-X series, based upon the Jaguar core.   The quadcore X1150 is claimed to perform twice as fast as the current Atoms at 2 GHz, but needs 17W to achieve this. You can lower the power usage by fiddling with a p-state cap in the BIOS. Unfortunately the 9W number that so many publications talked about without further commentary is only achieved at 1 GHz. At that clockspeed the performance per Watt advantage will be negligible compared to the 2 GHz Atom S1260 at 8.5W. The best performance/watt will be achieved somewhere between 1.5 and 2 GHz, but the advantage that the new Opteron-X has over the Atom is not as large as many people thought. Unless of course you can make use of the floating point processing power of the integrated Radeon core in the Opteron X-1250 APU.

But although the new Opteron-X can not offer a massive performance/watt improvement over the Atom, it is a much more attractive micro server chip. It can deliver the “good enough” horsepower that an Atom can not deliver. But then again, the current low power Ivy Bridge based Xeon, the Xeon E3-1220LV2 was already a very good micro server chip.  But those who think that AMD will be contend with an underdog role once again, are wrong.  AMD has a pretty ambitious roadmap to attack this market.

Low power server CPUs Berlin: Radeon mixed with Steamroller
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  • name99 - Tuesday, June 18, 2013 - link

    "AMD says that using the graphics core for the heavy scalar floating point will get as easy as C++ programming and as a result, Berlin should make a few heads turn in the HPC world. It even looks like SSE-x will get less and less important over time in that market. "

    Ahh, yes, the old "New compilers will make our weird CPU architecture invisible to the programmer" gambit. How's that worked out in the past, guys?
    Trimedia? Cell? iTanium?

    But there's sucker born every minute. Good luck to anyone foolish enough to invest today on the assumption that this magical compiler will be available tomorrow.

    [I'm not claiming this breakthrough --- compiler-transparent GPGPU --- will NEVER happen. I am claiming it ain't gonna happen during the relevant lifetime of this product.]
  • Alberto - Wednesday, June 19, 2013 - link

    This roadmap is a disaster.
    No new high margin SKUs since 2015++ (excavator). No medium margin SKUs to beat Intel single socket offerings since excavator core will born in an unknown year.
    The low margin segment is dominated by a NON-X86 core...vanilla from Arm and not custom ala Qualcomm.
    The process side of the things is even worse. The Arm core (H2 2014 from a more accurate Amd official slide reported by xbit) is stuck on 28nm, funny thing !! considering that Qualcomm will be on 20nm in Q1/2014; Amd has not even the money to work with TSMC to deliver a competitive Arm Soc !!!
    Seattle is just now a failure looking the specs, the process do not allow eight cores with a decent TDP to mach Intel Avoton in 22nm Trigate. Recent impementations of A15 say that 28nm node is not the best thing around not even to do a decent quadcore low power device...you figure an eight core one.
    Anyway Seattle is late, aka in the same time frame of 14nm Airmont.

    The last part of the article is stunning: "It looks like the Intel Avoton will have a very potent challenger in Q1 2014".....too bad Seattle that is an H2 2014 device.

    "So there is good chance that AMD will make a big comeback in 2014 in the server market"

    What server market??? microserver market ??? with a NON-x86 core ??? a x86 Company ???
    I have said: there is good chances that Amd will do a so so New Entry in 2014 in a 10% low margin nice on the server market, along with many other contenders some of them with custom and optimized x86/Arm cores.
    I love our articles Johan, still this seem very very strange to me
  • PCpowerman - Wednesday, June 19, 2013 - link

    You guys on here sound like incompetent investors on Wall Street that no noting about technology. Let me give you investors some advice: If you do not know the field very well that you invest in, then you should refrain from commenting like you know who will be more competitive.

    When AMD goes all HuMa aware with their new generation APU's then SSE instructions, AXV instructions and other such floating point instructions will be utterly destroyed by a program that takes advantage of the GCN cores on these APU's. That is an UNDENAIBLE FACT!! A program written to take full advantage of the best floating point instructions that X86 has to offer will not come ANYWHERE near that of the same program written take advantage of the GCN cores on the next generation APU,s.

    That is why the server Kaveri variant CPU does not need to be 2P or 4P. Database programs that leverage GCN cores will outperform Intel's floating point instructions in their processors, even in 2P or 4P configs. It takes a whole lot of CPU's to equal the floating point computation power of the GCN architecture. CPU's are only great at serial code and branch prediction. We need more programmers to comment on here rather than you investor types. I feel like the only technical person on here. Geez...
  • Alberto - Wednesday, June 19, 2013 - link

    Too bad most common server workload is not floating point only based and a rude and layout repetitive GPU can be a substitute of a CPU. The bulk of the SW is optimized serial.
    Kaveri can be nice in low end HPC, still you forget that Intel is shipping nicely powerful integrated GPU in these days, so Amd is not alone anymore in this segment.

    And yes Kavery need to be 2P, but it is not.
  • andrewaggb - Wednesday, June 19, 2013 - link

    There will be certain operations that can be made potentially many times faster. But not everything. Databases are interesting, but at least in my use cases they are more limited by memory capacity and disk/Storage I/O than cpu performance.

    Most of the things I code are office and management/ordering/billing systems. Nothing particularly cpu intensive (other than video compression). Just lots of business rules and interop.
  • Klimax - Wednesday, June 19, 2013 - link

    See Iris Pro and what it does to GCN...
  • Alberto - Wednesday, June 19, 2013 - link

    Moreover Intel graphics are now fully OpenGL 4 e OpenCL 1.2 capable.......
  • Calinou__ - Thursday, June 20, 2013 - link

    ...on Windows.
  • 1008anan - Wednesday, June 19, 2013 - link

    PCpowerman,

    Please comment on Intel's Broadwell integrated graphics and 14 nm tock (maybe Goldstone?) integrated graphics.

    Intel is closer to truly fusion application processors with many different types of cores working together (both fixed function and general function.)
  • wumpus - Friday, July 5, 2013 - link

    Wake me up when those microserver GPUs can use protected memory. As far as I know, all that memory is wide open to any process on the server. I can't imagine many uses of a microserver that could accept that (google and other single owner datacenters, maybe. But I tend to see these things as something you would want for VPS hosting).

    GPUs appear perfect for cryptographic uses, but are completely unacceptable as long as they can't protect their own memory (just sift through the entire GPU looking for keys, you will find them quickly). I suppose there exist the odd ECC format you might want to run on your server, but that is sufficiently exotic to simply justify adding a PCIe card.

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