I have a Sapphire HD7870 OC GHZ edition card that i had to send in to have fixed due to the screen blacking out.
I went and bought an Asus HD7850 while I am waiting on the other card to come back.
Question is, can I set these in crossfire mode?
I have an ASUS M5A99X EVO AM3+ AMD 990X SATA 6Gb/s USB 3.0 ATX AMD Motherboard with UEFI BIOS and AMD FX-8150 Zambezi 3.6GHz Socket AM3+ 125W Eight-Core Desktop Processor FD8150FRGUBOX with a Corsair 850 watt power supply.
Thanks in advance,
Here is the compatibility chart from AMD http://sites.amd.com/PublishingImages/Public/Graphic_Illustrations/WebBannerJPEG/AMD_CrossfireX_Chart_1618W.jpg
The 7870 will not downclock, AMD cards work with their own specification, that goes for memory speed, core, everything will work as it should.