Hello, I've built about half a year ago a 2500K. My hardware is: an asus uAtx p67-pro mobo, a 4870x2 and 4 gb. of HyperX (XMP). The memory is CAS7. Now I want to sink some money in memory and have 2 banks left, but I don't know what to do. Should I get 4 gb. of the same memory or should I get 8 gb. It also has a CAS of 7 but is not XMP. I build this machine to make a fast SFF games/multimediaPC with some room for o/c íng. Could someone give me some advise on this matter? Thanks
Your best bet would be buying a new 8 or 16GB kit to replace your current RAM kit. You could chance getting a kit identical (or very close to identical) to work with your current kit but mixing RAM kits is not recommended because it often doesn't work even though it seems that it should.