Quote from: orcy on March 29, 2011, 06:49:35 PM

There are motherboards that can support 4 cards. For example, Gigabyte has motherboard GA-890FXA-UD7 with extended form factor that supports four double spaced cards: http://www.tomshardware.com/reviews/amd-890fx-crosshair-iv-formula-890fxa-ud7,2640-6.html.

However it is required to have the special case for such motherboard (XL-ATX).

Yeah, I was looking at the MSI 890FXA-GD70 and the CoolerMaster HAF-X. That combo should fit 4 cards. But Motherboard + Case is $365.

A cheap case + cheap motherboard could save $~250.

If I could get 2 5970s for under $600 each, then I'd come out ahead on the dual 5970 system with a cheaper motherboard and case.

Otherwise, assuming I could cool it, it still seems like the 4x 5870 system makes sense.

And yeah, I understand I could save more by building super cheap cases out of various other things, but I don't think I want to make that optimization.