Quote Originally Posted by mikesrex View Post
I'm still a noob at this whole thing, but it was pretty apparent that XP32bit would crunch for days on end with no problems whatsoever at 191x21 with 1.35 vcore. With W7 RC1 64 bit, though, I had to make changes. Maybe it is just bugs in the actual OS as opposed to a difference in inherent stability?
64 bit is more demanding from the hardware.
If you are on the edge of stability with your CPU (on 32 bit OS) , it's expected to have a slightly lower maximum clock with 64 bit OS.
I have experienced the same thing