Ok this really has to do with the computer specs in general but i had no clue where to put this in the fourms. So i put it in motherboards and memory as you can see.
Here is what i want to run but i have no clue if they will go together with each other this will be a first time build for me \
here is the build
Case
NZXT Phantom PHAN-001WT White Steel / Plastic Enthusiast ATX Full Tower Computer Case
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Motherboard
ASUS Crosshair V Formula/Thunderbolt AM3+ AMD 990FX SATA 6Gb/s USB 3.0 ATX AMD Motherboard with UEFI BIOS
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Cpu
AMD FX-8120 Zambezi 3.1GHz Socket AM3+ 125W Eight-Core Desktop Processor FD8120FRGUBOX
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Graphics
I will be crossfiring the cards not sure what it really is but i know the simple fact that its great and makes graphics run smooth as heck, not sure if they will go together and what not with the motherboard or even together themselves.
SAPPHIRE 11188-22-20G Radeon HD 6950 2GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card (OC Edition)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
XFX Double D HD-687A-ZDFC Radeon HD 6870 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Ram
G.SKILL Ripjaws Series 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9Q-16GBRL
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
PSU
Rosewill Xtreme Series RX850-S-B 850W Continuous @40°C ,80 PLUS Certified, ATX12V v2.2 & EPS12V v2.91, SLI Ready CrossFire Ready, Active PFC "Compatible with Core i7, i5" Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
HDD
Seagate ST310005N1A1AS-RK 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Disc Drive
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
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Last but not least the display
Toshiba 40" 1080p 60Hz LCD HDTV 40E220U
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
The question that i am wondering
Will these parts work with each other and if so can you explain more on the crossfire and how to tell if they will go together such as that thank you for your help.