The Phenom II X4 955 is an excellent CPU. I have one overclocked to 3.8 GHz on air and it performs very well. (My graphics card is my bottleneck
). I have a similar mobo to that one as well, just with the 770 chipset. It's good, except the OC switch is useless. I was originally going to get the HAF 932 but it ended up out of my budget so I went with the NZXT LEXA S.