Performance analysis of Intel's Core 2 and AMD's K8

Posted on Sunday, November 02 2008 @ 13:47 CET by Thomas De Maesschalck
Real World Technologies has written an indepth analysis of the performance and efficiency of Intel's Core 2 and AMD's K8 architecture. The hardware they tested is relatively old, but the article may still be pretty interesting for some of you. Here's a quick summary of their conclusions:
  • The Core 2's IPC is about 5-10% higher than the K8 for our set of games.
  • The K8 has 20% fewer uops per instruction than the Core 2 for our set of games.
  • The Core 2's branch predictors are vastly more accurate, with about 50% fewer mispredicted branches per instruction retired for our set of games.
  • The Core 2's instruction cache is slightly more effective, with ~20% fewer misses per instruction retired for our set of games.
  • Misaligned instructions are very infrequent for both CPUs - approximately one out of every thousand retired instructions is a misaligned memory access for our set of games.
  • 60% of x86 instructions access memory for our set of games.
  • The K8's L1D cache is more effective, with about 20% fewer misses per instruction retired for our set of games.
  • The Core 2 Duo's L2 cache is much more effective, with about 50% fewer misses per instruction retired for our set of games.
  • You can check it out over here.


    About the Author

    Thomas De Maesschalck

    Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.



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