I am trying to buy/build a gaming desktop for $1100/$1200.

[Lotusgeek]

What are the games you are going to play with this desktop?

 

[ROFL_A_PIGGY]

Here is a setup that will play ANY game at highest:

Total: $1061 (+$170 for SSD, +$87 for bluray burner)

Case: ($80) COOLER MASTER Storm Scout Mid Tower(Newegg.com - COOLER MASTER Storm Scout SGC-2000-KKN1-GP Black Steel / Plastic ATX Mid Tower Computer Case)

Processor: ($300) Intel Core i7-2600 Sandy Bridge 3.4GHz (3.8GHz Turbo Boost) Quad-Core(Newegg.com - Intel Core i7-2600 Sandy Bridge 3.4GHz (3.8GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics 2000 BX80623I72600)

RAM Memory: ($47) G.SKILL 8GB DDR3 1600(Newegg.com - G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBRL)

Hard Drive$125) Seagate 1TB 7200RPM (Newegg.com - Seagate Barracuda ST1000DM003 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive)

SSD (optional): ($170) OCZ 120GB SATA III SSD (Newegg.com - OCZ Vertex 3 VTX3-25SAT3-120G 2.5" 120GB SATA III MLC Internal Solid State Drive (SSD))

Video Card: ($170) EVGA GeForce GTX 550 Ti 2GB GDDR5 (Newegg.com - Computer Parts, PC Components, Laptop Computers, LED LCD TV, Digital Cameras and more!
Item=N82E16814130652)

Motherboard: ($200) Intel BOXDZ68BC(Newegg.com - Intel BOXDZ68BC LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard)

Power Supply: ($90) OCZ 700W(Newegg.com - OCZ ModXStream Pro 700W Modular High Performance Power Supply compatible with Intel Sandybridge Core i3 i5 i7 and AMD Phenom)


CD/DVD Drive: ($19) SAMSUNG CD/DVD Burner DVD+R(Newegg.com - SAMSUNG CD/DVD Burner 22X DVD+R 8X DVD+RW 16X DVD+R DL 22X DVD-R 6X DVD-RW 16X DVD-ROM 48X CD-R 24X CD-RW 48X CD-ROM Black SATA Model SH-222AB - CD / DVD Burners)

Bluray burner(optional): ($87) Pioneer (Newegg.com - Pioneer Black 12X BD-R 2X BD-RE 16X DVD+R 8X BD-ROM 4MB Cache SATA Blu-ray Burner BDR-206DBKS)

 

[GhOsT1321]

Here is a setup that will play ANY game at highest:

I highly doubt that. Your gaming performance will be severely limited by that GTX 550. That power supply and processor are over kill.
A 560Ti, 2500k, and 500-650watt power supply would be plenty and outperform your build in terms of gaming.