I would get Intel instead of AMD right now. If you must go AMD, for gaming you should find a faster clocked quad core to be better than the slower clocked six core.
Instead of getting four sticks of 2GB memory, you should go with two sticks of 4GB memory.
Avoid Raidmax power supplies. Antec and Corsair have better budget power supplies.
Not sure what's up with Seagate, used to like them, last few years I feel they've slipped. WD hard drives for me.
Here is what I'd build for the price range.
$190 Intel Core i5-2400
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115074
$122 Gigabyte Z68 D3H
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128502
$53 Corsair 8GB (2x4GB) DDR3-1600
http://www.newegg.com/Product/Product.aspx?Item=N82E16820145345
$350 EVGA GTX 570 Superclocked
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130622
$115 Corsair 60GB Force 3
http://www.newegg.com/Product/Product.aspx?Item=N82E16820233194
$65 WD 1TB Blue
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136767
$19 Liteon DVD RW
http://www.newegg.com/Product/Product.aspx?Item=N82E16827106289
$100 Corsair 400R
http://www.newegg.com/Product/Product.aspx?Item=N82E16811139008
$85 Corsair 650 watt
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020
With this build, I went with Intel. The i5-2400 is a pretty good CPU, but isn't too expensive that it gimps my video card. If you are a gamer, I like to put more money towards the GPU than CPU as that is where the demand will be heavier at.
I went with a Corsair theme. SSD, memory, case, power supply. Why not, they make great stuff. I thought the heatsinks on those Vengeance memory sticks looked great. Though if you decide to get some obscenely large CPU heatsink, then you might want to get memory with smaller heatsinks.
The motherboard supports both Crossfire and SLI. And it's got heatsinks in all the places that need them.
And an EVGA 570 Superclocked, it's only $30 more than a normal 570 and it comes with a pretty good sizable factory overclock.