Fastest times I got out of my systems for BMW render…
MSi GE62 6QF Laptop
CPU - i7 6700HQ @ 16x16 - 4:48.86
GPU - GTX970M @ 480x270 - 2:01.36
Desktop System
CPU - i7 3770K @ 16x16 - 4:37.16
GPU - GTX660Ti @ 480x270 - 2:16.43
I then found a spare GTX660 laying around so I shoved that in my desktop machine:
GPU - GTX660Ti + GTX660 @ 480x270 - 1:23.79 WINNER WINNER CHICKEN DINNER!
I was considering buying a GTX1080 soon, but based on these results and since I don’t really need it for games, I’ve now decided to buy 2 x GTX1070 instead (non-SLI) since I’m betting cycles render times will be much faster than from a single 1080.