Professional: SPECviewperf 8.0
While the X2 3800+ OC takes the win in almost all the SPECviewperf 8.0 tests from the X2 4800+, the single core Athlon 64 4000+ has the win in most cases overall. The SPECviewperf 8.0 testing suite has not been atuned to multiple threads yet and the performance shows.
