I second this. You're not going to want anything under a fx 6300, even for KSP. I'd also recommend a gtx 760, as NVIDIA is slashing their prices in preparation for the gtx 960. Also, the gtx 960 might be a bad deal, especially with the rumor that it is crippled by a 128 bit memory interface. No amount of un utilized vram can fix that, as it'll only add more waste. Go for a decent prebuilt normal profile i5 pc with a decent psu, and a pcie 16 slot, then put in a gtx 750 ti. Should have no problems, unless you run linux or some crazy non windows os.