Phenom video leaks from Lake Tahoe

Discussion in 'Graphics and Semiconductor Industry' started by digitalwanderer, Nov 17, 2007.

  1. 3dilettante

    Legend Alpha

    Joined:
    Sep 15, 2003
    Messages:
    8,137
    Likes Received:
    2,939
    Location:
    Well within 3d
    The 40% was AMD's PR being very selective about estimated performance on tests they never fully disclosed.
    There are a few areas where Barcelona's performance scales well enough that it can boast a higher amount of performance at a given clock speed.

    The catch is that it is in a multisocket system on bandwidth-limited FP benchmarks.
    There, Barcelona fared better versus the Core2 systems at the time of their estimates a half year ago.

    Sadly for Phenom, those advantages don't really apply in the single-socket desktop market, and seem to work against it.
     
  2. hoho

    Veteran

    Joined:
    Aug 21, 2007
    Messages:
    1,218
    Likes Received:
    0
    Location:
    Estonia
    Well, they did say "in various workloads". I guess their definition of "various" is just a "bit" different than ours :)
    I wouldn't say they work against it, just that desktop doesn't depend on memory bandwidth and x87 performance all that much.
     
  3. Geeforcer

    Geeforcer Harmlessly Evil
    Veteran

    Joined:
    Feb 6, 2002
    Messages:
    2,297
    Likes Received:
    464
    You can say that again.
     
  4. 3dilettante

    Legend Alpha

    Joined:
    Sep 15, 2003
    Messages:
    8,137
    Likes Received:
    2,939
    Location:
    Well within 3d
    There is little benefit for the current 3-level cache setup when you don't have to worry about coherency traffic.
    The L3 cache, for current steppings, has essentially erased the latency benefit of the IMC.

    The A64 has enjoyed a ~20 ns latency advantage over Core2.
    The L3 for Phenom right now has an additive latency of ~20 ns.
     
  5. Silent_Buddha

    Legend

    Joined:
    Mar 13, 2007
    Messages:
    16,357
    Likes Received:
    5,341
    It makes one wonder that with AMD's relatively limited available R&D resources (compared to Intel) if they focused almost solely on the server and multi-processor market while hoping that any breakthroughs in that area would filter down to the desktop market.

    As it certainly appears to be the case at first glance. All these changes should keep AMD ahead in the 4+ processor server market, however it doesn't appear to be doing much for the single processor desktop market.

    Regards,
    SB
     
  6. TheAlSpark

    TheAlSpark Moderator
    Moderator Legend

    Joined:
    Feb 29, 2004
    Messages:
    20,819
    Likes Received:
    5,922
    Location:
    ಠ_ಠ
    How feasible would it be for them to remove the L3 and unify the L2? I suppose that would be a major re-working of the layout. :???:
     
  7. ShaidarHaran

    ShaidarHaran hardware monkey
    Veteran

    Joined:
    Mar 31, 2007
    Messages:
    3,984
    Likes Received:
    34
    I wish they would release such a part, but doubt we'll ever see a unified L2 part from AMD (not this generation anyway). Ditching the L3 probably will happen for low-end parts though. Obviously the L3 is detrimental to performance outside of server/HPC workloads so the scenario you described would likely bring Phenom back to near-parity with Intel's Quads, IPC-wise anyway.
     
Loading...

Share This Page

  • About Us

    Beyond3D has been around for over a decade and prides itself on being the best place on the web for in-depth, technically-driven discussion and analysis of 3D graphics hardware. If you love pixels and transistors, you've come to the right place!

    Beyond3D is proudly published by GPU Tools Ltd.
Loading...