Athlon 64 Reviews
HardOCP (vs P4 3.2GHz 2mb L3 EE), Lost Circuits, Gamers Depot, PC Stats, AMDMB, UKGamer (just 2 pages of info), Hexus, Legit Reviews, Overclockers Australia, Hardwareluxx (wrong language), sudhian (vs P4 EE), tech-report (vs P4 EE), aces hardware (vs P4 EE + overclocking)

to summarise (from HardOCP) "Bottom line? The Good - The Athlon64 3200+ and FX 51 deliver the best overall performance we've seen from any CPU line to date." - the 64 3200+ (2GHz) even beats the 3.2GHz P4 EE (with it's 2mb L3 cache) in a number of benchmarks!

and a Shuttle Athlon 64 case review thingy. (here).