It does if you're thrashing on virtual all day.
Yeah.. Just put 1Gb of ram in my PC, and switched off the page file... Works great with XP so far.. (Still seems to use VM tho, only no slow downs when having lots of stuff open)
And remember that adding FAST RAM sped up original Amigas.
Ah.. the good old days... Chip, Fast and slow ram in an A500... And offcourse trying to get it to load the important stuff in fast ram..