Posted 28 October 2010 - 11:04 PM
Depends on what you need/want, and what you can live with.
The GTX 470 is the best performer by a slight margin over the 6870. It runs hot and is a power hog. It supports Phys-X, and CUDA. It will be on "special" (NVidia call it a "temporary MSRP reduction")until the middle of November, then the price jacks back up. Hot and noisy are keywords here, but it is fast.
6870-If I wasn't waiting on a 6970/GTX580 for my bi-annual graphics upgrade, this is what I would likely get. Drawbacks, it doesn't overclock well due to voltage settings. Spanks everything on your list but the GTX470
6850-Slightly faster than a stock GTX 460 1gig card. Overclocks better than the 6870.
GTX460 1gig- Draws 60 watts more power under load than the 68XX cards. Supports CUDA and Phys-X. Usually overclocks very, very well at the expense of a lot more power draw.
Choices, choices, choices.
I am a retired Ford tech. Next to Fords, any computer is a piece of cake. (The cake, its not a lie)
3770K @4.5, Corsair H100, GTX780, 16gig Samsung, Obsidian 700 (yes there is a 700)