My System specs are as follows:

AMD Phenom X2 555 BE
Sapphire ATI Radeon 5670 1GB DDR5
4 GB Ram
Asrock 880GM-LE

Using fraps and with resolution 1280x1020, i get 45-35fps with Crysis 2 running at Very High settings with V-Sync off.
I'd like to get some tips as to how will I be able to play crysis 2 on extreme settings with 1920x1080 resolution
without changing cards.
I want to get a stable 40fps at least in this game or more if and only if it is possible with my card and current pc.

Although if I am to change cards, is AMD Radeon 6850 ok for a replacement gpu?

You won't get 40 fps solid with that card. I wouldn't worry about it too much. The only difference I notice with the two settings is draw distance, (tree leaves fill in more as you get closer to them) The game still looks fantastic on very high.

@Borss
According to fraps, yeah im getting 35-40 and on certain occations its 45 but it's rare.

Yeah, unfortunately with those specs the biggest upgrade to gfx you'll get is going to come from replacing the card. I'm not keen on whether or not Cryengine 3 and Crysis 2 take advantage of multiple CPU cores, but if you have not unlocked all the cores on your processor it's something you should look into doing, turning your processor into a triple or quad core. At the very least I'm sure you'd see a performance increase doing that since you are running fraps. Also, if you have not overclocked your card, you could download MSI afterburner and see if you can get some small performance increases that way.

@Borss
According to fraps, yeah im getting 35-40 and on certain occations its 45 but it's rare.


On extreme? If that's the case, you got what you want, why post?