|No motherboard, no RAM specs, & I couldn't find that graphics card at the ASUS site. Did you mean this one? ---> http://www.asus.com/Graphics_Cards/...|
You might want to consider a different power supply. The problem with the Antec is it has four +12v rails. It would be better to get one with a single +12v rail with high amperage. And you don't need a 650W unit for that build, 450-500W will be sufficient provided you pick a decent quality name brand unit. Stay away from the low quality junk brands like iBall, Mercury, VIP, Zebronics, etc.
Which OS are you going to run, Win7 or Win8?