Crossfire HD6950's poor performance

thehoaremaster

Honorable
Nov 27, 2013
4
0
10,510
Hi, I have just built a new system using two crossfired HD6950's.

- CPU: AMD Bulldozer FX-6 Six Core 6300 3.50GHz with 4.1GHz Turbo enabled
- Motherboard: Asrock 970 Extreme3 R2.0 (Socket AM3+) DDR3 Motherboard
- RAM: 8GB 1600MHz Dual Channel DDR3 RAM

I have done a fresh install of Windows 8.1 and I have installed the latest beta drivers.

Getting serious framerate drops in the likes of BF4, CoD Ghosts and some of my older games. Some games are just consistently low. My older system was 5 years old with a single HD6950 and works slightly better

zGPU shows one card at x16 and one at x4 but they are both in x16 slots.
 
Solution
no bottleneck. there should be a setting between bus speeds...

corvetteguy1994

Distinguished
no bottleneck. there should be a setting between bus speeds...

 
Solution