Sorry. About $700 including OS. Almost primarily for gaming, maybe some game recording.
I guess $70 since it fits in with the rest of the build, however, any m-atx with usb 3.0, and out of box compatibility with the cpu.
That's a pretty good list, but as I forgot to mention, the budget is $700 with OS. I do like some of those choices though.
Are there 40-50 dollar motherboards which will have the full compatibility with the cpu? Everyone I've tried has needed the update. I decided on the 760/770 because I have seen them go for $150-$160 recently, however I hadn't thought to look at 280x's. Indeed you are correct that there are many available for that price.
Thanks