**Also not being very knowledgeable about pc's i was wondering what the main differences there would be (that i would notice) in mobo chipsets (like a 500sli to a 570sli) and the differences in l2 cache in the cpu(this cpu has 2mb. is that better then 2x512 or 1mb and whats the difference between the different thermal Ws)
Another option is to keep your current motherboard and memory. Swap in this S939 Opteron 175 and graphics card. Within a few percentage points performance-wise of your proposed rig at a savings of ~$160 (no need for a new motherboard, or RAM)
why is the intel e2160 cpu better than the 4200? also if i were to upgrade to the 8800gt it would cost an extra $75. what would be the performance difference in the 2 cards be in running lets say cod4.