This is all very interesting to me because I currently use Windows 8.1 for my Nvidia Rig but in the past I have mined with my AMD rigs using EthOS and found it much more stable and reliable, and using much lower resources, etc - so a Linux solution for an Nvidia rig sounds great. I was considering trying the PiMP Nvidia version but when I tried that for my AMD rigs it confused the hell out of me.

Anyway, I have one big question because it doesn't seem clear to me from the small amount of info in this thread whether it will suit my rig. Reason being, my rig is currently 2 x  Gigabyte  gtx1070 G1 Gaming cards and 2 x Galax gtx 1060 6GB cards.

It seems from what I read above that when you set cc & mc overclock and powerlimit - this is one setting to apply to all cards on the rig. This is obviously suitable for the typical situation where people commonly use  multiple instances of 1 type of card on a rig, which I understand - people choose a GPU, buy however many of them and populate the rig with them.

What about a situation like mine though, where I have 2 of one GPU and 2 of another, so I need to be able to specify different OC and powerlimits for the different cards.

Currently in Windows 8.1 I just use MSI afterburner and set each card individually, so for example I mine ZEC and the 1070s are powerlimited to around 68%, core OC to +70 and mem OC to +700, while the 1060s are powerlimited to about 75%, core OC to +50 and me OC to +500. Using EWBF this is giving me approximately 1400sol/s using 500W at the wall.

Since the powerlimit in Linux seems to be set in watts rather than percent, one setting in a percentage (70% would probably work) but I would need to be able to set the 1070s to around 125W and the 160s to around 85W. The CC could all conceivably be set to +60 and MC to +500 or +600 but is there a way to set powerlimits individually for each card?