Pick one with 780G or 790GX chipset, they should be cheaper. You may even go for a Micro-ATX board since you don't need SLI/Crossfire.
------------------------------...man will occasionally stumble over the truth, but usually manages to pick himself up, walk over or around it, and carry on.
Reply to sub mesa
790X (The first GA board) is a good choice if you don't want an onboard graphic card, and I think it's a bit cheaper than the 790GX which has onboard graphic (the ASUS board). Both 790X and 790GX has two PCI-E X16 slot that would support 8x8 crossfire while 790FX (the second GA board) support 16x16 crossfire which is a bit faster.
Considering that you're not going to be doing crossfire, you can choose between boards with 770 chipset or 780G chipset, depending on your preference, and of a brand that you trust (we all have our preference.)
I've had this Biostar board for about a month now & it's performed very well.
Enabling the ACC unlocked my 4th core (1 of the lucky ones I guess) and I have mine stable with all 4 cores at 3.4GHZ ... never blue screened. The onboard graphics perfrom pretty well in Windows 7 64-bit too.
This is the first Biostar board I've used, but I'm thoroughly impressed.
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