Far Cry 3 FPS drop with CrossFireX 7970's

[LegolasElf]

I'm not sure if this has already been posted but I seem to be able to run Far Cry 3 a ton smoother and faster with just a single 7970 instead of 2 in CrossFire. I just started using CF with 2x 7970 GHz GPU's and my 3DMark11 graphics score went from 9k to 18k so I know that my CF is functioning properly. All of my other games like BF showed significant performance increases but Far Cry 3 gives a huge frame rate drop. With a single GPU and 3 monitor EyeFinity, I am able to run Far Cry 3 with 4-60 FPS on average. With CrossFire enabled, not only am I seeing strong stuttering, but an FPS drop all the way down to 15-20 FPS. This is not right! I am using the latest CAP2 application profile from AMD. Is anyone else experiencing this or have any suggestions? I really want to see both my cards be utilized by Far Cry 3. Any help is appreciated.

 

[Fearthe1337]

far cry is a mystery as far as fps goes it has issues with sli/xfire and it seems that the AA is broken as well,,i have the same issue as you with my xfire hawk 7870's

 

[LegolasElf]

Just upgraded to Catalyst 12.11 beta with the 12.11 CAP2. Worked like a charm. Running between 70-120 fps now.

 

[Janus67]

was going to suggest a driver update, glad that did the trick

 

[Fearthe1337]

thanks that worked for me i forgot about drivers for some reason

 

[dect60]

With respect OP, you are full of it saying that you went up to 18k in 3dmark 11 after adding another 7970. I have a 3770k at 4.9, 1866 ram, cf 7970s at 1200/1600 and I am not hitting 18k. You said you even got that without 12.11 drivers installed. Considering a stock 3770k bottlenecks cf 7970s overclocked like yours in benchmarks.

 

[wingman99]

With respect OP, you are full of it saying that you went up to 18k in 3dmark 11 after adding another 7970. I have a 3770k at 4.9, 1866 ram, cf 7970s at 1200/1600 and I am not hitting 18k. You said you even got that without 12.11 drivers installed. Considering a stock 3770k bottlenecks cf 7970s overclocked like yours in benchmarks.

Just wondering how do you know that stock 3770k bottlenecks CF 7970s, you have yours overclocked.

 

[Janus67]

With respect OP, you are full of it saying that you went up to 18k in 3dmark 11 after adding another 7970. I have a 3770k at 4.9, 1866 ram, cf 7970s at 1200/1600 and I am not hitting 18k. You said you even got that without 12.11 drivers installed. Considering a stock 3770k bottlenecks cf 7970s overclocked like yours in benchmarks.

http://hwbot.org/benchmark/3dmark11_-_performance/rankings?cores=2#start=60#interval=20
Search results

All of those results say you can easily get 18k with dual 7970s