you gotta check this out http://www.hwupgrade.it/articoli/905/index.html I wonder how this is going to perform...
IT doesn't perform at all. It was built by Sapphire as a MAXX version of Radeon 9800 Pro, but they couldn't get it to work, even with a 10 layer pcb. It was only an experimental project and will never see the light of day unless ATI decides to try it and manages to get it working.
It'll be interesting to see what Sapphire will do when the R420 comes out... It could be that this was just a bit of training before creating a MAXX with the next gen vpu... But it would've been fun to see what speeds it could've achieved...