Quote Originally Posted by andyr(uk) View Post
Does anyone have the same issue that i have and that is 6 gig of ram showing as 6.0 gig installed and 4.0 usable in control panel, think it was the same in vista 64 and now in windows 7 also.


Be sure to check for Bent pins in the CPU Socket, I have seen Several users have this issue due to bent pins.

QPI/Vtt and IOH voltage also can cause this if they are not set high enough. It can also be caused by memory timings being set to tight.

Good luck in finding the cause, and I hope it is not bent pins