I wish one of them would have made their product with a dumb crippling thing, like one only has 256 mb ram or the other only uses GDDR2 crap or somthing... Would make picking a winner easier.
Elfear made a good summing up of pro's/con's on the first page, but hes only done the X1900, so ill just quote finnys pro/con list. Pretty much the same stuff.
Originally posted by: Finny
ATi:
Long-term
-Better AF (Although neither company has done a truly wonderful job here, IMO)
-Better AA SCALING (Less FPS hit w/ higher AA, although neither card can single-handedly use much higher than 4xAA in newer games & maintain good FPS)
*AVIVO (Not really a win, as this card wouldn't exactly be good for HTPC anyway...)
*Better shader performance (Although this could be debated, and I honestly think it really won't make a bit of difference- No matter what "features" are supported, both cards will still be just as "outdated" when newer games arrive)
Short-term
-More available & better prices (1900XT at ~450 = best value for ultra high-end)
nVidia:
Long-term
-Better AA QUALITY (TRAA or whatever it's called looks a bit better, although you can't really make much use of this unless in SLI or in older games)
-Quieter & cooler (Good for HTPCs)
-Better Linux support
*SLI is better than Crossfire (Although that depends on whether or not Crossfire ever manages to catch up w/ SLI, or if it remains an eternal game of catch-up for ATi)
Short-term
*SLI (Same as before; it's subjective...)
I conclude that the overall for your average gamer who wouldnt notice the difference between the different AA/AF's and dosent use a multi GPU setup or some other niche thing like dual monitors, and since the performance is the same, the 7900GTX is better. If you have a niche situation or game at really high resolutions, high in my definition is above 1280x1024 which is my LCD's max, then maybe the X1900 should be a consideration. Also i wouldnt consider linux support to be a factor, who games in linux? No doubt somone does, but its just... crazy. Im not simply assuming what the "average" gamer has, im basing it on what i have and what the results of that really big survey taken by valve. It looked pretty accurate.
7900GTX uses less power and makes less noise apparently, although the average gamer isnt gonna care about these things either, they are better off with them than without....
Dont take it badly X1900 fans! I own one, and its a fantastic card, its just IMO the 7900 edges it out by a tiny margin with its slightly more efficient design, both cards are power beasts but 7900 simply sucks less juice. Cant really vouch for its noise output, but the overall view is that its quieter.