Ultra Battlebox: Building a Battlefield 3 PC For Under $1,600
SSD - 120GB Corsair Force GT

Our original plan called for a 3TB boot drive with a 40GB SSD for caching via Intel’s SRT. That install fell over and died twice, thanks to some bugs with SRT and drives greater than 2.2TB, so we went back to the drawing board. We decided on a blazing-fast 6Gb/s SATA SSD with 120GB of storage as our boot drive. That’s enough for the OS and a few of our favorite games and applications, with a larger traditional hard drive for documents, movies, music, and other media. A 120GB drive, right now, is the sweet spot between price and capacity.
Hard Drive - 2TB Hitachi Deskstar 7K3000

We had our eyes on a 3TB Deskstar and 40GB SSD, as noted previously, but—in addition to the aforementioned buggy install—we realized we could get a 120GB SSD and 2TB drive for around the same price. We figure we’ll miss 1TB of mass storage less than we’d miss the ultra-fast load times of a dedicated SSD for our OS and gaming. For now, two terabytes is plenty for us, and the Deskstar is both speedy and reliable. 11.28.11 Update: The price for the 2TB Deskstar is now approximately $200, instead of the $120 it was at the time this story was written.
PSU - 750W Corsair TX750 V2

Not much to talk about here; we needed power. Power enough to run our rig without stuttering, freezing, or crashing. Power that doesn’t cost an arm and a leg. Corsair’s TX750 V2 isn’t frilly or fancy—we didn’t spring for the modular version—but it does what it says on the tin, and that’s enough. 750W is sufficient for our solitary Radeon HD 6970, and should even enable us to throw another card in the system later, if we so choose.
Case - Rosewill Thor v2

For price-conscious builds we normally opt for mid-tower chassis, as they’re usually less expensive than their full-tower kin. However, we reviewed Rosewill’s Thor V2 last month and it really captured our imagination. Either it’s well built for a budget full-tower, or it’s cheap for a good full-tower, but either way, we dig its roomy interior, easy cable routing, and fantastic stock cooling. The Thor has two variable-speed fan controllers that support three fans each; we connected its intake fans (23cm, front and side) to one and its exhaust fans (14cm rear and 23cm top) to the other.