yes it's a good enough build to run the game at ultra minus ubersampling.

Go nvidia. Other than that, yes.

@Blasko1223: 6970 is fine, I have it and it run the game without a problem.

@OracleXIII:  Can you recommend a good nvidia card for witcher 2 that's in a similar price range?

@Aus_azn: After trying out both Nvidia and AMD GPU's I'll say Nvidia has a far better control panel, but I prefer AMD.

@Blasko1223: Everone loves benchmarks, these are on the second highest setting. I use 6870 crossfire and it's not too shabby, single card performance was pretty good and it doesn't use much power. If you can you should go for the 69XXs or Nvidia equivalent.

@Aus_azn: After trying out both Nvidia and AMD GPU's I'll say Nvidia has a far better control panel, but I prefer AMD.

@Blasko1223: oh shit you say 6870, my bad. Both are good, my friend's playing ultra-uber, with his ATI Radeon HD 4670 (at 1280x720)

Save up a bit more cash and get a GTX 560 or GTX 560 TI, the 6870 would struggle a bit to play it max @ 1080P

I am Running the 560ti in SLI mode.  I have everything enabled except V-Sync, Dangling object limit,  Uber-sampling.  Running 1920x1200.  All stock, no overclocking.  I would say my FPS is usually in the 50s-70s.  Battle and heavy scenes i could dip as low as high 30s.  Pretty happy with the setup.  The game just is stunning every time I play it.  I end up taking so many screenshots with Fraps b/c I am amazed.

AMD dropped half of the Radeon HD 6950's onboard memory to give us this 1 GB flavor, and the price fell accordingly. At $245, there really isn't any competition for this powerful, yet relatively low-priced graphics card. It outperforms the GeForce GTX 560 Ti in enough situations, on average, to score the sole recommendation.

@Badhands said:

Save up a bit more cash and get a GTX 560 or GTX 560 TI, the 6870 would struggle a bit to play it max @ 1080P

No it wouldn't. It is what I have and I play everything maxed minus Ubersampling obviously.

I got a question, i have a Mid-2010 15'' mac with i5 and 4 gigs of ram and the wierd NVIDIA chipset that comes with this... i think its 330m so yeah. I would like, play this on my Windows bootcamp, do you guys think it will run like in medium settings 45 - 50 fps.. and most importantly... will i have those sweet hair physics going on?

playing this on ultra 1920x1200 With ubersampling on and a steady 40 fps with a radeon hd 6990 4gb,i7 2600k and 8 gig ram

With the newest version of The Witcher 2 running ubersampling isn't that bad of a performance hit anymore as long as you have Nvidia video.