Topic Title: Two Radeon HD7870s GHZ editions not working in crossfire mode
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Created On: 02/09/2014 11:33 AM
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 02/09/2014 11:33 AM
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Joined: 02/09/2014

Here's the situation.  I bought two of these cards: 

SAPPHIRE 100354OC-2L Radeon HD 7870 GHz Edition 2GB 256-Bit GDDR5 PCI Express 3.0 x16 CrossFireX Support Video Card

One came DOA and it was discontinued so I got my money back and bought one of these:

XFX Double D FX-787A-CDFC Radeon HD 7870 GHz Edition 2GB 256-Bit GDDR5 PCI Express 3.0 x16


So Now I am trying to run them both in crossfire mode and when I uninstalled and then installed the latest drivers there is no crossfire option.

Im not overclocking any of them and using Catalyst version 13.12

Using Windows 7 64 bit

Motherboard is a Gigabyte 790FXTA UD5

Processor:  AMD Phenom 2 X6

Power supply:  Coolermaster silent pro 1000W

Never had an issue with crossfire before.  I upgraded from two hd5770s

Both cards are obviously by a different manufacturer but are both 7870 GHZ editions

Is it because they are different manufacturers? 








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