Ok I reworked your build a little, at your budget you can really get a lot in this build.
FX 8150 with ASRock 990FX Motherboard
I believe I already detailed this combo above. You wanted AMD, and this is a good AMD processor. It will also hold you over until the Piledriver comes out, which I am waiting for.
Tuniq Tower 120
This is a great heatsink that should keep you nice and cool. It is a quality after market heatsink. It gets great reviews, and above all, looks good doing it!
Rosewill Thor Gaming Case and Rosewill Hive 650w Modular PSU
I went with the Thor, at your budget, this is a good option. We did a
review on it a few months ago. We love this case, and we think you will too. Rosewill does great combos on their Case and PSUs, this one gives you 650w of 80 plus modular power. Your system should not need this much power, so you have room for future upgrades.
MSI 7950 GPU
We love MSI, and you listed the 7950 above, so we went with this one. It is a good deal for a nice GPU.
Corsair 16GB 1600 RAM
I love Corsair RAM. If you find cheaper or better deals, pick them up. We do however suggest using name brand products at all costs.
WD 500GB 7200 rpm Sata III HDD
This is pretty much a storage drive and for those programs that you do not use as much aka not games lol
Kingston HyperX 3k 120GB SSD
At your budget there is really no reason to not get a SSD. I would load the OS and a few games on here, should seriously decrease loading times and prevent the only bottlenecking you should notice in this kinda rig, in the HDD.
LG CD Burner
I wasnt sure if you need this or not, so I just linked it anyways. Spin disks, spin!
This is a great build, if I say so myself. You get all of this and still come in under your listed budget. This should bring you to @ $1270 before rebates, but after shipping. Let me know if you have any questions or concerns