the athlon64 series overpowered the p4's
. ususaly the model number ended up being almost the equivilant in pentium 4 mhz, so 3700 -> 3.7Ghz equivilancy (most likely a bit less).
Single core works fine btw, im running on a p4 3ghz (530j prescott)+ 4870 512, everything maxed out (except aa)
HF!