Crossfire related question

I already read the post by Maziar...great post btw..

Im running 2 of these cards atm in crossifre: http://www.diamondmm.com/HD3800.php

the 668core clock one.

I just bought a better single card: http://www.newegg.com/Product/Prod [...] 6814161215

So my question is will I gimp my computer if I tried to crossfire them ?...the way I thought AMD cards worked...if one card was way faster the other card could be used as a physics card instead? ...

im just getting real bad performance from the ones I have currently hence the question...I didnt check this site first about the cards until I already bought the new card..

The idea of physics calculation of ATi graphics cards is some way out in the future. Primary reason lies with Intel who bought Havok, the owner of the solution(Havok FX) ATi and nVidia both had decided to use as their way to make physics calculations(yes we could have had a standard that worked on both and worked now!).

nVidia recently bought the other big player in the physics arena PhysX, and are planning to make the code usable on their graphics cards 8xxx series and newer, however it's unlikely ATi will be allowed to use this option(allthough I'm sure some hacker could make it work).

The likely time for ATi to get into physics is if developers decide to use the standards in DX11, that's expected to contain standards for programming the GPU, to make their game physics. (That is if Microsoft isn't influenced by nVidia as was the case with DX10 where the standards was lowered so nVidia could make a card that fulfilled the requierments)

However for now and current for ATi cards physics is unlikely unless someone or something can get Intel to start on the work of finishing Havok FX(which is a project currently cancelled as people won't buy CPUs to calculate physics if GPUs do a better job...)