Bulldozer sucks, Vishera/Piledriver is where its at.
What I built for
~400 dollars and plays everything on ultra settings. I'm omitting my SSD and Case because there's so many to choose from and so many deals.
Motherboard: Asrock 990FX Fatal1ty PROFESSIONAL or Killer - Can be had on ebay for ~80 dollars best AMD+ performance/dollar board. Very high quality VRM cooling 12+2/8+2 powerphases. Basically means it can handle any AM3+ processor you throw at it no problemo.
STAY THE FUCK AWAY FROM GIGABYTE MOTHERBOARDS. They are having some SERIOUS VRM cooling/Vdroop issues presumably for the next very long time. Also, TERRIBLE customer support.
If you can upgrade to the 500-600 dollar price point I would highly suggest either an Asrock Extreme 9 or Asus ROG Crosshair Formula-Z for their overclocking ability.
Storage: I'm using a 240GB SSD I got for 130 a couple of years ago, plus a 20TB Ubuntu Server NFS Share to store all my other shit. Your combinations and milage may vary.
GPU: Sapphire GHz OC Edition 7870 - OC @ +25% everything max voltage
CPU: AMD 6300+ - OC @ 4.8 GHz
PSU: Offbrand 800 Watt PSU, got lots of good reviews and it was a 60 dollar shellshocker at the time. Can't go wrong with that I've had it for four years and its still chugging along. Allows for CFire in the future.
RAM: A-Data XPG Gaming Series Ver 2.0 <-- these have HUGE heat sinks on them so be careful, but they overclock better than any RAM performance/dollar. That kid who suggested G.Skill Ripjaws is an idiot. 1600 MHz 9-9-9-16 is the industry standard right now for DDR3 you can pick up 8GB of that on ebay for like 40 bucks. If you're paying a premium it should be for the ability to overclock your ram to some retarded speed like 2133 MHz <-- now were cooking. Really that kid who said 16GB doesn't know his shit. You only really need 8GB especially unless you're too stupid to overclock like a fucking boss.
Cooling:- CPU Cooling: ARCTIC Freezer A30 Extreme, or any variant. There are two rip offs of this design. One is the Hyper 212 Evo, and the other is NZXT RC-RST40-01. They're all pretty much the same thing
- Case Cooling: I have a Corsair Graphite 600T Stormtrooper edition. Take your time and find the right case for you. There are hundreds of great cases to choose from. I suggest hardOCP as a place to look for Case Recommendations.
Once everything is tweaked perfectly and your overclocking like a motherfuckin bauss you should be able to hang with the spoiled rotten daddy's favorite boy Intel i7 kids who dropped 2K on a computer they could have gotten for 1/4th the price.
You aren't going to get a better set up than this per dollar/performance. I know there's lots of Intel/Nvidia fangirls, and there is also a lot of misinformation being spread about AMD processors and their future.
As time goes on, lazy shitty developers will start to learn how to harness multiple threads for gaming. They have to. AMD now dominates the console-sphere. As these mainstream development teams take advantage of these cores; what this means for you is your gaming computer stays relevant for longer. Essentially its equivalent to having purchased a Haswell i5 in terms of lifetime expectancy from Vishera processors + market & technology trends without having to spend another 200 dollars. Intel be price gouging like motherfuckers with their locked multipliers and insane prices.