AMD released its Quad FX processors today, The Inq analyzed one of the early reviews and found out this processor gets crushed by Intel's Kentsfield processors:
Test scores reveal that Quad FX manages to achieve equal performance to Core 2 Extreme QX6700 in SiSoft Sandra 2007 and PCMark05 and narrowly edged it in memory tests: both L1, L2 and system memory latency are better on QuadFX than on Kentsfield, but that's nothing new.
However, taking a look into media encoding shows that QuadFather just gets crushed by Kentsfield, especially in MPEG-2 8Mbit reproduction. But the worst result for AMD is a look into power consumption and performance per watt. AMD system consumes far more power than Intel, sometimes even double that Kentsfield setup.