Hello there,
I've just upgraded my system with another Gigabyte HD 7950 Windforce 3, 3gb and have them in crossfire, I've spent days to sort things out cos it gave me lost of trouble.
Now it seems like I have managed to get it up and running properly, when I run Heaven benchmark with both cards performance is about 95% better
than single card ( makes sense ) and both GPUs are running at 99% - 100% (no fluctuations nothing, running perfectly smoothly - without increasing power)
Both GPUs are overclocked to core clock: 1175 Memory clock: 1400, I haven't touched the voltage.
Heaven 4.0 Benchamerk results (both cards) at everything maxed out, resolution 1920-1080
FPS: 63.30
Score: 1593
Min FPS: 20.20
Max FPS: 142.60
GPU load used to fluctuate a lot ( when running metro Last light)
GPU 1 used to fluctuate between 100% - 0% and
GPU 2 normally stayed at 30%
so I increased power by 20% and that solved the GPU load fluctuaton problem, but now there is different issue
If I run Metro Last Light with increased power at max settings my GPUs wont go beyond 60% but there is no flactuation
If I run Metro last light without power increase GPU 1 fluctuates between 100% - 0% and GPU 2 normally stays at 30%
But if I run Heaen benchmark with OR without increasing the power both GPU load will be 99%-100% at all times.
why is that ? can it be fixed ?
If GPUs would run at max as they are with heaven I would have bout 40 FPS instead of 24 FPS
Im runing everything in full screen
I have not got multiple displays
PSU is Corsair GS600
CPU is i5-3570K 3.4 GHz overclocked to 4.1GHz (4cores)
RAM 8Gb
Mother Board is ASUS PBZ77-V LX2
Kind regards Valdis
I've just upgraded my system with another Gigabyte HD 7950 Windforce 3, 3gb and have them in crossfire, I've spent days to sort things out cos it gave me lost of trouble.
Now it seems like I have managed to get it up and running properly, when I run Heaven benchmark with both cards performance is about 95% better
than single card ( makes sense ) and both GPUs are running at 99% - 100% (no fluctuations nothing, running perfectly smoothly - without increasing power)
Both GPUs are overclocked to core clock: 1175 Memory clock: 1400, I haven't touched the voltage.
Heaven 4.0 Benchamerk results (both cards) at everything maxed out, resolution 1920-1080
FPS: 63.30
Score: 1593
Min FPS: 20.20
Max FPS: 142.60
GPU load used to fluctuate a lot ( when running metro Last light)
GPU 1 used to fluctuate between 100% - 0% and
GPU 2 normally stayed at 30%
so I increased power by 20% and that solved the GPU load fluctuaton problem, but now there is different issue
If I run Metro Last Light with increased power at max settings my GPUs wont go beyond 60% but there is no flactuation
If I run Metro last light without power increase GPU 1 fluctuates between 100% - 0% and GPU 2 normally stays at 30%
But if I run Heaen benchmark with OR without increasing the power both GPU load will be 99%-100% at all times.
why is that ? can it be fixed ?
If GPUs would run at max as they are with heaven I would have bout 40 FPS instead of 24 FPS
Im runing everything in full screen
I have not got multiple displays
PSU is Corsair GS600
CPU is i5-3570K 3.4 GHz overclocked to 4.1GHz (4cores)
RAM 8Gb
Mother Board is ASUS PBZ77-V LX2
Kind regards Valdis