Originally Posted by acekrn
the x1900xt is proved to outperform the 7800gtx. (you will probably not see much of a difference with current gen titles though.) however, it has been also stated by some sources that the x1900xt might even ourperform it's counterpart the upcoming nvidia 7900gt. So consider that. I dont have any links at the moment, but perhaps if i get time i'll post it up. Good luck and happy gaming.
The 7900GTX is said to be only a 7800GTX with 8 more pixel pipelines, and a higher core and memory clock.
However, pipelines DOES NOT mean better performance. Actually, the most pixelpipelines a video card needs is about 16. It's about shader pixel processors. The more pixel shader processors a card has, the more things it can do. In which case, the clear winner is the X1900 series processors.
If you want to have good performance at a relative cheap price, I suggest this to you: Get Two X1600PROs in 512MB, put them in CrossFire. With the X1300 and X1600 series video cards, you do not need a master card, as oppossed to the X800, X850, X1800, and lastly the X1900 series video cards.
If you want to have a better setup in dual GPUs, get CrossFire. If you want the ultimate video card capable of delivery maxed out settings on every game currently in the world, get the X1900 series GPU. Whichever platform you choose, you should definetly consider ATI as the GPU maker to go with. I'm no fanboy, I just like what's best, and currently, ATI provides the best, in single, and in dual, graphics platforms.
So, choose whichever you want, but, keep in mind that NVIDIA is releasing the 7900 series video cards this month (March), which means prices drop on some of their video cards, most notebly the 7800 series, so you may very well want to consider going with one of those if your willing to spend some extra money.