I have 1 gig of dual channel RAM right now, i'm thinking of upgrading to 2 gigs. what would show a better performance? 4x512s of value ram or 2x1gigs of performance RAM (XMS or some OCZ RAM).
the timings on the value RAM are 2.5-3-3-8 corsair.
Go with 2x1Gig sticks. As for which brand I dont have a good answer for ya. I have 2x512 OCZ platinum rev2's in my system and I love them. OCZ is a very good company. However the XMS are also extremely good. Hopefully someone else can help you with that.