Legend, thanks Beppe

I've created a basic EQ visualizer (file attached) but the colour shader doesn't seem to be bringing in the gradient from the sound effector correctly, in fact it's quite (within the spectrum) random.
Any idea what it is I'm doing wrong?

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?

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

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?

Any other thoughts on this?
Unfortunately going to have to ditch Octane if I can't get this to work.

Ugh, no idea what's going on. Tried a different object, re-installed C4D and even updated Nvidia drivers but still not showing up in PV/render.
I'm stumped!

Thanks for the suggestions guys but neither of those worked unfortunately.
Scene attached for reference.

When I use an Octane tag with X-Particles and set it to render sphere it appears in live viewer but not render.
Any idea why?