I recently played Assassins Creed on my friends Xbox and I would like to continue in the privacy of my underwear. What is the cheapest card I can get to play it maxed out?
I have e2140 @ 3.2GHz, 2GB RAM @ 800MHz (1:1)...I quit gaming after I bought and sold the 2900 tragedy — It was reminiscent of my first stock trade. But my wounds have healed, and I'm back now after playing Ass. Creed. And seeing spore (that game looks really fun).
The HD 3870 addressed most of the issues of the HD 2900XT except the AA, you asked for the cheapest card. If you want a card that can run it properly, look for the HD 4850 ($160-180) or the HD 4870 ($260-280), they are the absolute best you can get right now for their price range and unlike the HD 2900 series, these actually have a VERY easy time handling AA.
The 3870 would actually be a great card for AC. If you don't install the 1.1 patch then you get free AA pretty much with DX 10.1. I don't see any difference running the game with AA and without AA in dx10 because of that .1 that they decided to take out about 1-2 weeks after it was leaked that AC supported it.