First Gaming PC Build, is it good?

So I'm going to get a gaming rig pretty soon, and I was thinking about going with this build: http://pcpartpicker.com/p/jq63sY

So I have multiple questions. To start, will the 500w power supply I have be enough to handle the 770? Second, can this PC run games such as BF4, ARMA III, Minecraft, and Gmod at 60 fps on high settings? And third, is this a good build for the $800 price tag? I'm really going big in the Graphics Card and processor, and trying to keep everything else at a medium.

Guest

That build is not too bad but I've tweaked it a bit to give you better performance for the same price. To crossfire any cards you want at least a good 750watt psu http://pcpartpicker.com/p/CdbnNG

ray