Vista - 8800 GTS 640mb or 8800 GT 512mb SLI?

And whatever you can afford! 2 GTX OC2's are touching £600!

I'm still reasonably happy with my 8800 GTS 640. I haven't played Crysis since the demo came out, and pretty much everything else I play doesn't even compare to that level of complexity and strain on the card. Maybe I'll upgrade after the 9-generation stuff calms down some.

OP should have bought the eVGA Card with the Step-up Program. That way he will be ready for the 9800 GTX.

Very happy with the BFG 8800 GTS 512mb OC at the minute and will be going SLI in a couple of weeks, so no need for a 9800 GTX for at least 12 months. I can run Crysis on high with textures and object detail to very high comfortably at 1280x1024 using the task manager tweak and this is the most demanding game by far, so i am not fretting regarding a new GPU.
Also, have checked out the reviews for the 9800 GX2 and it's nothing special at the minute due to the 512mb per core and phenomenal power supply demands!

Well the GTX won't be coming out for a while. =] Stupid motherboard... I knew I should have gone with a SLI motherboard. My 8800GT is doing fine though. How's Crysis? Got bored with it after a few hours.

look at it this way. Price up two cards in sli mode. Buy a duel gpu card which will be cheaper than two sli cards.

No it won't be cheaper with the additional cost of a 750watt or more power supply added on top. I can get a 8800 GTS 512mb card for around £170/ £180 UK pounds, so £350 for 2, ok? A 9800gx2 is over £400 then another £100 for a power supply!

Crysis is brilliant if you can run it around 25fps and accept it isn't as free-roaming as the developer suggested.

What are your system specs at the moment?
How much money are you willing to spend?