I'm currently running an A64 3200+ with 1 Gb (2x512 sticks) of DDR400 RAM. I've got two slots left on my motherboard, so my question is this: Since I've got 512 Mb running on each channel, should I just get 2 more 512 sticks, or will I still get dual channel performance if I get 2 1GB sticks for 3 gigs total?