Sciencemark 2.0, HEXUS Pifast
The use of medium-latency memory gives the Armari system a touch less bandwidth than our Intel Pentium Extreme Edition 955 setup, according to ScienceMark 2.0. The Pantheon figure would be 200-300MB/s higher with the use of 2-2-2-5 DDR400 SDRAM. Slightly hard to find in 1GByte sticks, though.
Memory access latency was always going to be better on an Athlon 64 system.
Overclocked or not, Intel's Presler simply cannot match the number-crunching ability of a 2.8GHz dual-core 'FX CPU.