Intel Dual core E8400 running ad 3.00Ghz (will OC once I install my Noctua NH-U12P cooler), Patriot 8gb DDR2 ram (will upgrade to 8gb DDR3 Enhanced Mushkins when I get a new Mobo), a Corsair TX750w PSU, and an EVGA GTX 260 Core 216 with updated drivers.
My fps in games such as Crossfire (by Z8games), is at about 80, but when I play games like BF:BC2 or BF 4F, I get about 30 fps, and sometimes drop to a 20 (depending on how many people are playing etc..)
Anyways, I'm pretty sure my card can do a hella lot better than 20 fps in BF:BC2. This is an RMAd card (my second card as the first one probably stopped working due to OCing).
The cpu is bottlenecking you so overclocking won't help.I have a gtx 275 which is equal to a oced 260 and I can max bfbc2 with 30-80 fps,never below 30,even crysis and to some extent even crysis 2 at 1680X1050 and thats at stock settings.Buying the i5 2500 or higher should solve the problem