AMD Phenom Preview: Barcelona Desktop Benchmarks
 

With the test methodology explained, how does Barcelona stack up to a pair of dual-core Opterons? In other words, how much faster can we expect Phenom to be vs. the Athlon 64 X2? To put it succinctly, it looks like around 15% clock for clock.
http://www.anandtech.com/cpuchipsets...spx?i=3092&p=1