ZDNet has a nice benchmark comparison between Win XP final, Win 2K & Win ME.
They used among other benchmarks: BAPCo SYSmark, 3DMark 2001, SPECviewperf 6.12. Overall conclusion: The tests were run on a DELL Dimension 8100 (P4 1.7 Ghz). Win XP is on par with Win2K or faster, while win ME still rules the court in 3DMark 2001 which may be due to unoptimized drivers for XP.
They used among other benchmarks: BAPCo SYSmark, 3DMark 2001, SPECviewperf 6.12. Overall conclusion: The tests were run on a DELL Dimension 8100 (P4 1.7 Ghz). Win XP is on par with Win2K or faster, while win ME still rules the court in 3DMark 2001 which may be due to unoptimized drivers for XP.