I'm no guru. . . here is the bit that I know.. . http://www.anandtech.com/cpu/showdoc.html?i=1956 basically, not clear that the E is much better than the non-E. You should read it though. On the memory side- thats a dual channel memory board, right? So you are actually getting two Simms to make up the 1G? (otherwise the TWIN line is kind of pointless- see the Corsair website) You would probably get slightly better performance with the Corsair- I don't know enough to quantify it though. Corsair is famous for the overclocking abilities of their memories. If you aren't going to optimize and overclock, it is probably overkill. Markd