Two (different) Nvidia cards in same PC and DAZ? (update)

Member_257874

Hello

I just upgraded my PC to a 1070 to get faster render times but my old 660 Ti was not bad either. It was sort of slow compared to high end cards but faster than CPU. I took care that I got a board that has two PCI slots. So I wondered what if I installed both cards and use them for even faster renders?

But after I installed the drivers for 660 alongside 1070, I am back to VGA since it seems not to work having both drivers on the same system (is that true)?

I know, I can not SLI the cards as they are from different model lines and use differen chipsets, so is there a way to have both cards installed or should I rather sell the 660 Ti (which is still well enough for some older game engines or lower settings and smaller render jobs)?

(update)

Uhm... I installed 1070 driver again now and DAZ shows both cards in the device tab - does this mean it works with both cards?

prixat

nVidia has universal drivers for the those cards. It's the same driver for the 660 and the 1070.

It sounds like the double installation messed up the driver, especially if you put an older 660 driver on top of the newer 1070 driver. (The 1070 MUST have recent drivers).

It sounds like it's working now, are your renders quicker?

fastbike1

You shouldn't use SLI for Iray anyway. Bear in mind that if the scene requires more memory than the 660 has, the 660 will be dropped from the render, Iray combines CUDA cores but not card Vram.

Member_257874

prixat said:

nVidia has universal drivers for the those cards. It's the same driver for the 660 and the 1070.

It sounds like the double installation messed up the driver, especially if you put an older 660 driver on top of the newer 1070 driver. (The 1070 MUST have recent drivers).

It sounds like it's working now, are your renders quicker?

Quickly put together a bigger scene and loaded it up with 6 Genesis 3 figures with different materials and hair. After images been loaded into memory (which took most of the time but that's ok since it just needs to do that once when you keep the testrender open) it rendered a few times quicker with both than with just the 660 (it was above 70% after just 20 seconds). So yes it seems to work :)

fastbike1

@mindphuk_566386ef79

With 6 G3F figures, I suspect that the GTX660 isn't rendering at all given the 2GB Vram.

A utility like GPU-Z will tell for sure.