Build a PC on Any Budget: Three Builds from $500 to $2000
The Tax Refund PC

They say money won is sweeter than money earned. If that’s true, then any tax “refund” is about as tasty as okra covered in cod liver oil. Still, we can’t complain about the PC we get out of it.
Cooler
The push-pull configuration of NZXT’s Havik 120 gives our Tax Refund PC top-notch cooling at an affordable price. With the auxiliary cooling we’re running, we pushed our Core i7-3820 to 4.7GHz effortlessly.
CPU
Intel’s 3.6GHz Core i7-3820 gets us to LGA2011-land without having to sell pints of blood, and despite its lack of a “K” or “X” designator, it still overclocks nicely. We took our chip from its stock 3.6GHz to 4.7GHz on air with no issues in our benchmarks at all.
Motherboard
X79-based motherboards aren’t cheap, but at least you get features. Asus’s Sabertooth X79 gives us multi-GPU support, a nifty BIOS update feature that doesn’t require a CPU, and a ton of thermal sensors.
GPU
AMD’s Radeon HD 7970 gives us the single-fastest GPU in the Tri-state area, is the first to offer native PCIe 3.0 speeds and DX11.1 support, and can even be considered power-friendly for its class.
Case
It’s hard not to see the NZXT Phantom 410 and think of the Emperor’s badass Royal Guard. A Royal Guard who doesn’t take a coffee break while he’s being thrown down an exhaust shaft, that is. The Phantom offers front-panel USB support, fan options galore, and tidy cable routing, too.
ODD
If you spend more than 2K for a box, it would be a shame not to be able to play Blu-ray discs; this LG drive lets us do that, and burn BD-Rs at 12x and DVDs at 16x.
RAM
In a really fun world, we’d be running 32GB using four 8GB DIMMs, but 8GB DIMMs have pulled a Where’s Waldo act on us. Until they surface, we’ll settle for the 16GB of Corsair DDR3/1600 Vengeance RAM using four 4GB DIMMs.
HDD/SSD
To keep our budget within reason, we simply cloned the storage options from our Sweet Spot PC. Yes, a much larger SSD would be attractive, but we think the 120GB SSD plus 2TB HDD combo is pretty tough to beat for the cash today.
PSU
Corsair’s new 850HX is a single-rail design, offers 80 Plus Silver certification, and, more importantly, should provide enough horsepower to run two Radeon HD 7970 cards if you ever want to up your frame rate.
OS
Both of the lower-end rigs tap 64-bit Windows 7 Home Premium, but for any eight-DIMM motherboard, we recommend investing a bit more for 64-bit Windows 7 Professional, which doesn’t have an artificial limit of 16GB. With 4GB DIMMs and eight DIMM slots, we don't want to leave memory capacity on the table.

Read on for the benchmarks!