Disabling the paging file is generally not a good idea. Especially if you game. You may get some system cache performance boosts, but you are sacrificing stability. If maybe you have 8GB-16GB, maybe can disable paging file. However if you are 4GB or under, I would not. To JCSY and others, 32bit Windows (normal XP, or Vista and 7 32-bit) can only address a _MAXIMUM_ of 4GB of memory. So when it has to deal with video card, and also device IO-memory space, it loses some out of that maximum of 4GB. At best, you will see maybe 3.75GB. On average, you get 3GB to maybe 3.5GB. If you use 64-bit Vista or Windows 7, you will not have this problem. 64-bit can address billions times more space than 32-bit (literally). If you are trying out the Windows 7 RC ( get it free before August 15th here: http://tinyurl.com/832nco ) and you have a Pentium 4, use 64-bit. All Pentium 4 chips are 64-bit, but can still operate 32-bit instructions. Core, Core2 and i7 are also 64-bit. Recent AMD chips are also 64-bit. Unless you go all the back to really old Athlons.