Could someone explain what the number associated with ram..ie pc2100 means? I assume the higher the number the better, since it's more expensive, but why, and is it worth it? My new MB, not yet installed supports both types.. DDR and SDram and says I can't combine those two types, but could I combine a pc2100 stick with a pc3000 stick for instance? JamesJ

Visit:http://corsairmemory.com specifically http://corsairmemory.com/main/trg-ddr.htmlhttp://www.crucial.com