@thomo1888 you forgot the hard drive. Also, if you are going the SB route I would suggest getting a P67 board.
I would really suggest the following build as it will outperform the current system you have your sights set on.
Remember that the GPU has a MUCH larger effect on the frames achieved than the CPU, I think a 6950 outperforms a 560, and with the large success rate of unlocked 6950's you could be looking at a 6970 which I am 100% certain outperfors the 560. You will also be getting the option to OC to around 4ghz with the hyper 212+ which can get me(caseless) to 4ghz with temps maxing at 50c.
Oh yes you will also be getting a better performing gaming rig for Â£20 less if you take into consideration getting a Â£60 case.Edited by Juganot - 2/5/11 at 12:22pm