So much left open there, most high end ram is good for both (only running 2 gb in dual with NO pagefile I rarely tap it over 59% usage except when gaming) Another issue is your OS, although the 32 bit OS' state they can handle up to 4gb it takes some tweaking to actually run 4gb. If using a 64 bit OS then 4gb wont be an issue at all. My set up with a P5ck board and 4gb of ocz plat had issues on vista 32 but since an upgrade to winblows 7 64 not an issue at all.