Originally Posted by particleman
4870x2 is no more advanced than 4870 Crossfire or SLi. The much talked about crossfire sideport is disabled and even if it were enabled all it is, is an extra PCIe 2.0 Connection which wouldn't help anyways. If anything Crossfire is behind SLi because of fewer rendering modes thus even less compatibility than SLi.
I'm no fanboy, like I said I bought 4870s without hesitation. ATi offered better value initially, with their pricing, but IMO nVidia still has the better product.
Hm... So all these diagrams showing the 2x RV770 chips communicating directly are untrue...