I have two AMD Radeon HD 7870s by Asus. The first is the DC2TG and the second is the DC2. I am having issues with crossfire not working well. My frame rates are not better on games such as battlefield 3 and TES V as well as others versus just the one card. I also often have hard system lockups, at least a few times per day.
I have checked to see how both cards work individually and in both pci-e slots and they both work perfect in both slots. I have also used both crossfire bridges with no change in performance. I do have the 12.8 drivers as well as the 12.7 cap 3 profiles installed. I would appreciate any help, thanks.
OS: Windows 7 Home Premium 64 Bit
Motherboard: Asus Sabertooth 990FX
CPU: AMD FX 4170
RAM: G Skill Sniper 16 GB @ 1866
Video Card: 2 x Amd Radeon HD 7870
SSD: Samsung 64 GB
HDD: Seagate 1 TB
PSU: Cooler Master GX 750W 80 Plus Silver Certified