shell shocke

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Jan 10, 2012
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:hello: I can crossfire 2 GPU's right? I'm kinda confused on what I need to crossfire in order to do this...Here are my specifications I'm just wondering if I should crossfire 2 lower GPU's or just 1 6850? I know 1 6850 would make less noise but I heard 2 lower GPU's would increase performance but if I did crossfire 2 GPU's I wouldn't have to buy a heat sink right? If I do then I probably am not going to get one...If it helps I'm using a good air ventilated ATX case (Rosewill Destroyer).
If you can say if they're compatible too that would be awesome!

MOBO:ASRock Z68 Extreme3 Gen3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
CPU:Intel Core i5-2400 Sandy Bridge 3.1GHz (3.4GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics 2000 BX80623I52400
RAM:Crucial 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) Desktop Memory Model CT2KIT51264BA1339
PSU:Antec NEO ECO 620C 620W Continuous Power ATX12V v2.3
GPU:GIGABYTE Ultra Durable VGA Series GV-R685OC-1GD Radeon HD 6850 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity
HDD:Seagate Barracuda ST500DM002 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive
CASE:RAIDMAX Blade ATX-298WW Black / White Steel / Plastic ATX Mid Tower Computer Case
DVD-RW: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
OS: Microsoft Windows 7 Home Premium SP1 64-bit - NON-OEM