SPEC Numbers

I just checked the latest published SPEC Rate figures for multiprocessors, and found the following 4-processor results:

AMD Opteron 3.0 GHz: Int = 50.3, FP = 48.6 (16.2/GHz)

Intel Xenon 3.0 GHz: Int = 55.4, FP = 42.9 (14.3/GHz)

According to AMD's Mr. Allen, the 2.0 GHz Barcelona gets an FP score of 69.5. That's 34.8/GHz, double the rate of a pair of current 2-core Opterons. Putting all 4 cores on the same die, adding some cache and some other tweaks should improve the rate, but 100% doesn't seem credible.

On the other hand, being in the proximity of a Barcelona caused a 2.33 Xenon to get an FP score of 54 (23.2/GHz). Maybe AMD has perfected its own Benchmark Distortion Field (tm).