Suggestions for new graphics card?

i currently have a bfg 8800gt oc2 card,it struggles a little on the newer games so im looking to upgrade.im looking for a good new card around $200-$250 to replace it,originally i was going to sli with another bfg 8800gt but now you cant get them any more and i was told its best to sli with the same card to see benefit,dont get me wrong the bfg 8800 is a super card but i want something with more power.ive been looking at 9800gtx,gtx260,radeon 4870 1gb or what ever is best for around the price i said above.
system specs are.

asus pn5-d mobo
bfg 8800gt oc2
e8400 core 2 duo
4gb ocz reaper memory ddr2 800
680w apevia iceberg psu

what games you running because i have that same card with 4gigs of ddr2 800 and a e6600 @ 3.4ghz and I cant find any game that wont run and my resolutions are 2048 X 1152 @ max settings in every game that supports it.

My suggestion is overclock your cpu.

the game i was playing is grid,it will only play on medium but it still looks ok i guess,i just wondered if it was worth changing the card for future games?.im a little scared of overclocking the cpu! how easy is it to overclock? any instructions?

grid i run at the second highest settings.

resolution plays a key role here as well because lower resolutions are going to be more cpu demanding than gpu, where as higher resolutions are going to be more gpu demanding than cpu. So it is very important to note as if you are playing 1024x768 or 1280x1024 for instance, upgrading your video card wont effect performance at all. But if you are running something like 1680x1050 or 1920x1200, then the GPU upgrade will have a significant impact on your performance. But in this case, I would trust in SWK given that he plays the game and has a similar set up to yours.

But in the interest of what I would suggest if you are playing in higher resolutions, the 4870 1gb would get my vote.

thanks guys for the info,much appreciated!! i am kind of liking the new 4870 1 gb as an update card and ive always been a invidia guy but the 4870 looks very nice.

That and they are very affordable now due to the recent release of the HD4890.

All that and it can fold too.

But if I was looking mainly at folding I would probably go the 9800GTX (what I have) or one of the newer 2xx and shop around for the best offer in the price range.

One of these days I should try and play a game on one of these machines - but wait, that would lower my ppd.

Oops, sorry for the hijack, I would probably go the 4870 - and one day they will release a driver to fold as well as similar NVidia cards.

whats with the folding??? not heard that term before!!

never heard of...
*hits big red panic button that calls JohnFrank*

so folding is...

CLICK ME TO FIND OUT ABOUT THE WHIMZICAL WORLD OF FOLDING

And if that does not get you anywhere, justr ask again and I will try and explain why it is good to do and support if you are able to.