Bottlenecking

I have evga 7800gtx and AMD 3000 oced to 2.125 ghz, now the quastion is do you think that my cpu is bottlenecking? If anyone has suggestions please respond. I am not getting the frames i should be getting in FEAR so I was wondering what could be the problem.
My specs
EVGA sli mobo
7800gtx evga
1 gig dual channel corsair
AMD 3000 oc'd 2.125 ghz
500 watt psu

 

also do u think overclocking it will help prevent bottleneckick? because to me it seems that extra 300 mhz did some good.

 

Having a faster core clock whould help... its prolly your weakest point.... what FSB and ram timings are you running ?? Ram speed and timings can make a big dif too....

 

my FSB is 1150 mhz and ram speed is 381 mhz with timings of 2-3-3-6. I had to lower my ram speed in the bios to raise the cpu speed up (which increased the ram back up to almost the original 400 mhz). I cannot oc the cpu over 2.150 cause it get unstable then. Core clock of the card is 485 mhz and memory is 1280 mhz. I am not sure what to do next.

 

232x9 and higher voltage doesnt seem to help me to overclock more