Hi all, I currently have 2GB using 4 512K chips. I want to go to 6GB total, but don't know if I should add 2 2GB chips or 4 1GB chips. The price would be very similar. I know going with 4 1GB chips will fill up all my RAM slots, and I'd still have 2 left if I go with the 2 2GB chips, but will the performance be better with the 4 1GB chips? Thanks.