
I'm also quite confused about the memory info displayed. I checked this tutorial yesterday:
http://render.otoy.com/forum/viewtopic.php?f=32&t=37304
She's got a 4 card rig and according to the video, she unchecks the first GPU and checks the other 3, to leave the first card for a fluent display and the other 3 do the hard computational work. In my case it's not working that way, I might have my cards crossed but it would be great to have a way to know which checkmark is which card.
If anyone else has got any light to shed on here I'd really appreciate it

regards,
Alvaro