I have a gigabyte K8NSC MoBo nforce3 chipset. It has a 4 gig capacity. The Mobo and the processor support dual channel memmory. I have 1gig (2x512) of pc 3200. I also have some extra ram 512 (2x256) of pc 2100. The pc 3200 will work just fine for me, however, is there any benefit to slap the slower ram in my extra slots to help out ? I think the duel channel will still work I will be matching in pairs for all 4 slots. Hopefully the ram being used will be the faster pc 3200 in slots 1 and 2. Comments greatly appreciated.