I built this system over 3 years ago and would like to upgrade parts to get decent gaming performance, hopefully capable of running battlefield 3 with around 60 fps when it comes out. Does it make sense to keep any of these? I am thinking about only updating the CPU + mobo + memory.
Intel E6600 Dual Core (2.4 GHz) oc-ed to 3.2G Hz
Two sets of memories (not used together): 2x2G PC2-6400, 2x1G PC2-8500
Upgraded graphics card some time ago to Radeon HD 4870 512MB
got new hard drives 7200rpm 2T drives
Corsair HX Series CMPSU-520HX 520W power supply
Antec P180 case