Want to make sure this will all fit.

[nathinu1]

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($179.99 @ Microcenter)
CPU Cooler: Xigmatek GAIA SD1283 56.3 CFM CPU Cooler ($19.99 @ Newegg)
Motherboard: P8Z77-V LX Socket 1155 Z77 ATX Intel Motherboard ($120 @ Micro Center)
Memory: Patriot Viper 3 16GB (2 x 8GB) DDR3-1600 Memory ($55.54 @ NCIX US)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($69.99 @ NCIX US)
Video Card: Sapphire Radeon HD 7950 3GB Video Card ($289.99 @ Newegg)
Case: NZXT Gamma Classic (Black) ATX Mid Tower Case ($39.41 @ Amazon)
Power Supply: Antec Neo Eco 520W 80 PLUS Certified ATX12V / EPS12V Power Supply ($46.98 @ Newegg)
Optical Drive: LG GH24NS90 DVD/CD Writer ($16.99 @ Amazon)
Total: $853.87

 

[TheBigTroll]

fits but can do better

http://pcpartpicker.com/p/kdzu

-dont use a low quality cooler
-16gb of ram is useless while gaming. if you are not gaming, get a i7
-better case
-cheaper video card
-slightly better power supply

 

[g-unit1111]

fits but can do better

http://pcpartpicker.com/p/kdzu

-dont use a low quality cooler
-16gb of ram is useless while gaming. if you are not gaming, get a i7
-better case
-cheaper video card
-slightly better power supply

I definitely agree about the cooler - Xigmatek coolers are a horrendous pain to install. They come with junk thermal paste, requiring you to buy new, have tons of tiny screws and loose parts, and the rubber connectors for the fans are impossible to work with.

For that price I'd get this:

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($215.99 @ Amazon)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($27.98 @ NCIX US)
Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard ($134.99 @ Amazon)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1600 Memory ($39.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($77.99 @ SuperBiiz)
Video Card: Sapphire Radeon HD 7950 3GB Video Card ($289.99 @ Newegg)
Case: Corsair 300R ATX Mid Tower Case ($67.46 @ Amazon)
Power Supply: Corsair Enthusiast 650W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($79.99 @ Newegg)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($15.99 @ SuperBiiz)
Total: $950.37
(Prices include shipping, taxes, and discounts when available.)

Mine's a bit more but I included a better case, cooler, and PSU.