[citation][nom]ProDigit10[/nom]AMD has always been better in power consumption, performance and pricing of their cards.the quality of their cards are more than sufficient (even if Nvidia has the slight advantage on quality).[/citation]
Always? That's such a bold statement!
Please refer to this comparison of the 1900XTX/7900GTX (it has the 7950GX2 thrown in as well)
http://www.xbitlabs.com/images/video/power-noise/cons_premium.gif
There are no surprises in the power consumption diagrams: incorporating less transistors and having a micro-architecture optimized for low power consumption, the Nvidia GeForce 7900 GTX eats 33% less of power than its opponent under maximum 3D load.
And another quote from Xbit
So, we can’t say the GeForce 7900 GTX is a clear winner today, but it has done at least no worse than the Radeon X1900 XTX in 14 out of 18 tests. And it has the advantage of lower price: $499 against $549.
So Nvidia has in fact been price/performance king, AND power efficient all in the same card(Semi-recently). But lets also forget the hog that was the HD2900XT too. Hot, Underpowered yet used lots of power and only competed with the 8800GTS 640.
Remember, ATI/AMD and Nvidia will always go round and round, trading spots for Top Card, Best Power Use and Price. When both have competing cards, prices will be better, when one is late, the other will price high, and stay high until the other finally releases. Perfect examples 8800 Series, stayed high priced. DAAMIT couldn't touch the GTX or the Ultra, for 2 generations until the 48xx came out.
And Then the 5000 series came out first and prices stayed high, because Fermi was late, not as good considering how much heat and power use it had.