I'm upgrading my girlfriend's RAM from one stick of 512mb pc2700 to 1 gig. Checking at newegg, they have a pc3200 stick of 512 for 5 bucks cheaper than the pc2700 version (Corsair value ram). My question is, will there be any problem mixing her current stick of pc2700 with a stick of pc3200? She has a mobo using the nforce2 chipset and plans on running it in dual channel. So should i stick with pc2700 for the second stick, or is the pc3200 ok?