Linked by Tony Bourke on Thu 22nd Jan 2004 21:29 UTC
Benchmarks When running tests, installing operating systems, and compiling software for my Ultra 5, I came to the stunning realization that hey, this system is 64-bit, and all of the operating systems I installed on this Ultra 5 (can) run in 64-bit mode.
Permalink for comment
To read all comments associated with this story, please click here.
Amd64 FFTW bench results
by Joe Georger on Sat 24th Jan 2004 14:12 UTC

I have an Opteron 246 and ran the fftw benchmark in both 32 and 64-bit modes. The 64-bit mode was about 20% faster. If I'm not mistaken I believe that's because the processor has twice as many registers available when running in 64-bit mode.