Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics 3000 BX80623I52500K
$229.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
COOLER MASTER Hyper 212 EVO RR-212E-20PK-R2 Continuous Direct Contact 120mm Sleeve CPU Cooler Compatible with latest Intel 1366/1155 and AMD FM1/AM3+
$44.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
CORSAIR Vengeance 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMZ8GX3M2A1600C9R
$49.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
ASUS P8Z68 DELUXE/GEN3 LGA 1155 Intel Z68 SATA 6Gb/s USB 3.0 ATX Intel Motherboard with UEFI BIOS
$254.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
SeaSonic X-SERIES X-1050 1050W ATX12V / EPS12V SLI Certified CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply
$219.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Corsair Force Series GT CSSD-F180GBGT-BK 2.5" 180GB SATA III Internal Solid State Drive (SSD)
$269.99 and a $30 rebate makes it $239.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
2X EVGA SuperClocked 012-P3-1572-AR GeForce GTX 570 (Fermi) 1280MB 320-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card
$719.98
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
ASUS 24X DVD Burner - Bulk 24X DVD+R 8X DVD+RW 12X DVD+R DL 24X DVD-R 6X DVD-RW 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM Black SATA Model DRW-24B1ST/BLK/B/AS - OEM
$19.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
The total for this build would be $1779.92 and this would be a very powerful gaming machine if you chose to go with these parts. You can of course swap out for what ever parts that you choose to go with.
Forgot the monitor;
SAMSUNG P2770FH ToC Rose Black 27" 1ms Full HD HDMI LCD Monitor 300 cd/m2 DC 70,000:1 (1,000:1)
$299.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
This brings the total to $2079.91 which is over your budget but you can swap out any of the components to make it closer to your budget or you can go for this whole build and add some extra budget money , it is your choice to make and that's the fun thing about building your own Pc is choosing what you want to go with.
By swaping out the two 570's for this card you can bring the price under the $2000;
GIGABYTE GV-R797D5-3GD-B Radeon HD 7970 3GB 384-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card
$549.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...