AMD Rev E Dual Core CPUs Info

Posted on Saturday, Aug 14 2004 @ 01:09 CEST by Thomas De Maesschalck
Soon AMD will release its 90nm AMD64 for mobile, desktop and serverprocessors. These 90nm ones are based on Revision D cores. But VR-Zone saw some docs about AMD's next major silicon revision change, which will take the AMD 64 processors to Revision E that features some interesting new things.
Interestingly, Rev E will have Dual Core support for both 940 and 939-pin processors. The 940-pin for server supports up to 8 registered DDR400 while the 939-pin for client supports up to 4 unbuffered DDR400. The Dual core has up to 1MB L2 cache per CPU, up to 3 HT link operating at 1Ghz max and a shared northbridge registers with one APIC per core.

Rev E has better mismatched DIMM support and has 2-beat DRAM timing for 939-pin processors. Rev E also includes better power management features and an enhanced DRAM controller. Indeed, Rev E will come with SSE-3 support with 11 of out 13 instructions present in Prescott excluding MONITOR and MWAIT. Other improvements include improved HyperTransport bandwidth for 940-pin at 2GT/s, Adaptive Prefetch to optimize cache hit rate, two additional write-combining buffers (total 4), XOR DRAM bank address to prevents page-thrashing on cache write-backs and an expanded clock ramp hysteresis counter.
Source: VR-Zone


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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