Need a Gaming PC / Multi-Tasking 800$ - 1100$ Buget

[Matriix]

Trying to build my first pc but trying to get suggestions on what parts to use.

 

[bigcyco1]

@Amazon $93.49 & this item ships for FREE with Super Saver Shipping
PC Power and Cooling Silencer Mk II 750W High Performance 80PLUS Silver SLI CrossFire ready Power Supply compatible with Intel Sandy Bridge Core i3 i5 i7 and AMD Phenom

@newegg $364.98 save: $10.00
ASRock Z77 Extreme4 LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
Intel Core i5-3570K Ivy Bridge 3.4GHz (3.8GHz Turbo) LGA 1155 77W Quad-Core Desktop Processor Intel HD Graphics 4000 BX80637I53570K

@newegg $44.99 FREE SHIPPING
Mushkin Enhanced Blackline 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model 996995

@newegg $17.99 & eligible for FREE Super Saver Shipping on orders over $25
Sony AD-7280S-0B 24x SATA Internal DVD+/-RW Drive (Black)

 

[bigcyco1]

http://www.amazon.com/gp/product/B006I2H0YS/ref=ox_sc_act_title_1?ie=UTF8&m=ATVPDKIKX0DER $77.03 & this item ships for FREE with Super Saver Shipping
Corsair Carbide Series 300R Mid-Tower Gaming Case - CC-9011014-WW ------- http://www.amazon.com/PC-Power-Cooling-Silencer-compatible/dp/B0064XAIXQ/ref=sr_1_3?s=pc&ie=UTF8&qid=1337669790&sr=1-3 $76.49 & this item ships for FREE with Super Saver Shipping
PC Power and Cooling Silencer MK III 600W Modular 80PLUS Bronze Power Supply compatible with Intel Sandy Bridge Core i3 i5 i7 and AMD Phenom
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.910439 $329.98 save: $10.00
ASRock Z75 Pro3 LGA 1155 Intel Z75 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
Intel Core i5-3570K Ivy Bridge 3.4GHz (3.8GHz Turbo) LGA 1155 77W Quad-Core Desktop Processor Intel HD Graphics 4000 BX80637I53570K
http://www.amazon.com/Seagate-Barracuda-3-5-Inch-Internal-ST500DM002/dp/B005CT56R6/ref=sr_1_9?m=ATVPDKIKX0DER&s=pc&ie=UTF8&qid=1337669470&sr=1-9 $79.99 & this item ships for FREE with Super Saver Shipping
Seagate Barracuda 7200 500 GB SATA 6.0 Gb-s 16 MB Cache 3.5-Inch Internal Bare Drive ST500DM002 http://www.amazon.com/Sony-AD-7280S-0B-Internal-Drive-Black/dp/B0057FRTPW/ref=sr_1_1?s=pc&ie=UTF8&qid=1337668905&sr=1-1 $17.99 & eligible for FREE Super Saver Shipping on orders over $25
Sony AD-7280S-0B 24x SATA Internal DVD+/-RW Drive (Black)
http://www.amazon.com/Kingston-SSDNow-120GB-Solid-KW-S2120-4B/dp/B007B6YP9I/ref=sr_1_3?s=electronics&ie=UTF8&qid=1335686396&sr=1-3 $114.99 & this item ships for FREE with Super Saver Shipping
Kingston SSDNow V+200 120GB SATA III 6Gb/s 2.5 Inch Solid State Drive KW-S2120-4B http://www.newegg.com/Product/Product.aspx?Item=N82E16814102986 $249.99
Save: $10.00 SAPPHIRE Radeon HD 7850 2GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card (11200-00-20G) $49.99 http://www.newegg.com/Product/Product.aspx?Item=N82E16820231461 G.SKILL Sniper Low Voltage Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBSR2

 

[Why_Me]

Trying to build my first pc but trying to get suggestions on what parts to use.

http://www.tomshardware.com/forum/261222-31-build-advice