A lot of the benchmarks you see are memory bandwidth dependant - specfp2000 is half memory and half fpu. whatever happened to benchmarks that stress fpu only (with the 1-cache). I'm thinking were gonna see more fpu benchmark FUD here soon. JC's site has a lot of non-bandwidth-ram benches. A guy named Tim Wilkins has two-three of them. A relavent site is http://www.tech-report.com/news_reply.x/1519/ --- a benchmark called molecular dynamics is used and all data fits into 1-cache and fpu (so memory bandwith is irrelavant - therefore each chips fpu alone is stressed - a a fair comparison possible). The athlon beats p-4 two to one.