[klem]

There is a school of thought that says i7 which has hyperthreading gives no advantage over the i5 which doesn't as CoD doesn't take advantage of Hyperthreading. Of course that may change. Just a thought if you are pushed for cash.

The i7 (well the previous generation i7 950) can be heavily overclocked with the right settings and cooler so you may want to think about that. Having said that the CPU isn't worked very hard atm by CoD, its the video card that takes the main load and the more memory you have on that the better. My GTX570 1.28Gb is almost fully loaded by CoD and would probably use more memory if it could.

The RAM should be fine. I have 6Gb but there is a memory leak in the game which loads up at around 2.5Gb and gradually increases to just over 5Gb at which point the game crashes. Once that problem is sorted out I believe my 6Gb will be more than enough so you should be fine.

You may want to think about a Solid State Drive (SSD) in place of the usual spinning hard drive (HDD). With windows and games on the SSD and other stuff like wordprocessing, photos etc on the HDD, you minimise the size/cost of SSD you buy and get a faster bootup and game response. I can't prove it porevents the stutters caused by loading map and skins data from the SSD but I believe it must do, I only suffer stutters from skin downloads (causes lag) and intense grahics (London) due to GPU limitations. I have 128Gb SSD and that has windows, CoD, IL-2'46, and FSX on it (about 10Gb to spare). If you get one be sure to check the read/write speeds are good. Older ones weren't much better than HDDs. Plenty of reviews on the web though.