How could I get Crossfire working on a 680i board? It IS possible.?

Question

Although technically not "supported", does it work?

I built a system for someone last christmas with a nforce chipset. The bridge came with the motherboard. They made it clear not to loose it or I was SOL for SLI. With crossfire you get a bridge with the card(at least with some of them). So if you bought a 680i board and two 2900xt cards... What else do you have to do?

It can and has been done:

http://www.techpowerup.com/index.php?39252

Why bother? Because the 2900xt is $140 cheaper than a 8800GTX. That is $280 when you buy two. After much research the nVidia 680i is the best motherboard chipset out for the core2, and after further research I do not see a $140 performance difference between an 8800GTX. In fact in some areas the 2900xt is much faster.

Not only that it would share the wealth to all three companies: Intel, AMD/ATI, and nVidia. No one would get hurt feelings and you'd be loyal to all three! Everyone is a winner. Just like kindergarten again! LOL!

This is probably a very difficult question. Please do not respond with answers that are not directed at this exact question regardless of which hardware you consider is best.

It is not a matter if I should. It is a matter of - how can I?

Mysticman 44! - I knew there was a way. And to think someone said it couldn't be done just 4 weeks ago!


http://answers.yahoo.com/question/index;_ylt=AsMAZ4TLhEKP6oPx6Kz8objty6IX;_ylv=3?qid=20070812150939AA2Q8MS&show=7#profile-info-be05d9f091769cb235df8d6b4bd10191aa

Answer 1

I can tell you how it is done, it involves hacking the driver's for the northbridge chipset. Apparantly someone very savvy over at VooDoo PC has figured out how to do that, but unless you are a very gifted programmer, you are pretty much out of luck, unless someone decides to post the hack on the net, which to this point I have not seen.

Answer 2

680i is the best board? It's yesterdays news. Before you buy 2 2900XTs I suggest you "research" the power needed to run them, unless you already have a 1000watt PSU. If you want to run 2900s get a P35 board, otherwise stick with nVidias.