Dual GPU Usage

[animatter]

Just set up a new system with 2 x 1080 TIs. When rendering it appears to only use one card and at quite a low rate at that. (see attached)
Any thoughts on why this might be happening?

[bepeg4d]

Hi animatter,
please, use GPU-Z to monitoring both GPUs while rendering. You should see GPU Load at ~90%, and TDP ~60% for both cards.
Also check to have disabled the SLI/Multi GPU option in Nvidia Control Panel, and enable the Priority only for the GPU connected tona monitor.
ciao beppe

[VVG]

switch

[animatter]

Thanks for the tips. GPU-Z shows them both working at a maximum of 75% when rendering. Anything I can do to get them up to the 90% mentioned?
Also, what is TDP?

Cheers

[bepeg4d]

Hi animatter,
what about the GPU Temperature?
TDP is the Power consumption, if too low, the GPU is slowing down to reduce the temperature:

ciao beppe

[animatter]

Thanks again Bepe. TDP jumps around a fair bit 30-70 but temp is pretty constant 60-70.
I'm guessing I could bump up the fan speed to get a bit more out of them?

[bepeg4d]

Hi animatter,
are you testing in GPU-Z with low Max sampling value, short render time?
Please, try with a scene with long render time to have a better view of the behavior of the GPUs while rendering.
ciao beppe