OTOY Forums

Is Octane limited to 1 card memory? Or will memory be multiplied if I add more GPU cards?

Whichever card has the smallest amount of memory will dictate how much you have. The same scene is loaded onto each of the cards.

You can use as many gpu for 1 license as your pc has suitble pcie slots.
2gb vram cards are a good size to have, 3 or 4 gb vram if you are into heavily into archviz.