The higher the resolution you're running, the less of a need for AA. HDR can look nice if done correctly. It just makes the light sources look more realistic. I have'ne tried an ATI card in years, so I can't comment on the 1950, but this 7900 GT was a great deal at $230 when I bought it. If you V-mod it, you can get some great power from it. All my specs are in sig. You will need to buy a $12 conductive pen and at least a Zalman VF-700 for the card (about $25). And I would highly recommend a single card solution over an SLI setup. You will need a beefier PSU for SLI and generally speaking, a single high end card generally will beat out 2 low-mid end cards. I had an SLI 7800 GT setup before this card and the scores were very close with this 7900 edging out ahead of the SLI setup.