^ Bad prospect of the LGA 1156 ? I dont think Intel will outphase this platform anytime soon...On the other hand AMD will surely replace the AM3 for a new platform for the upcoming Bulldozer archietecture, which will be released at 2011...
And as for the parts, they are pretty good...And even the Corsair 750TX would suffice for 2x HD 5850s(they can also power 2x HD 5870s too)
gkay09: Those boards aren't made for quad CF. Though, I don't see the point of quad CF.
Why not go for dual CF, save money on PSU/Mobo and wait for the next gen cards/cpu? Two 5850s will be sufficient for quite some time unless you're playing Crysis. Apart from that, 4 5850s will be heavily bottlenecked by your CPU.
But damn, the prices for the 5800 series are still ridiculously high, it's almost 100.- above the initial level.