will this memory (kingston KHX1333C9D3B1K2/8G) be compatable with the z68 ext 4gen3 and/or the ext3gen3 mb boards. I have no intention of O/C if that matters. I could not find this listed under the mother board site or kingstons memory site. Also, if I went with a 1600 memory at 1.65v, which I found acceptable on both sites, would this 1600 ram sort of void the cpu warrenty.thanks