What video card do you have? Regardless, I would highly recommend getting Oblivion if you want to be dazzled by graphics. To me, FEAR doesn't look that realistic.
I have already BF2 CoD2 Farcry (just the best looking games i have). Im pretty sure my system will be able to run anything that comes out within the next 2 years+. My specs are not a problem. I might try fear.