I have set up a test rig from what i have on hands, mobo is Gigabyte GA-Z270P-D3, CPU Intel Celeron G3900. 4 GB RAM.
GPU 0 - GTX 1060/6GB (it gives around 21 MH/s with +425 on memory and P2 state (strangely i can not query supported clocks with nvidia-smi -q -d SUPPORTED_CLOCKS))
GPU 1 - GTX 960/4GB it gives around 2,3 MH/s only... Even in P0 state (it strangely works fine with this GPU)
GPU0 is in 1 PCI-E x16 GPU1 is in x4 mode.
Maybe i missed something in Mobo or Claymore configuration?
Thanks everyone!
Mining ETH with those older GPUs is a waste of electricity mate, especially since they are pretty power hungry. A GTX960 was already at the middle/lower end of the 9xx series, you're not going to get much more out of it on ETH. Better off mining some XMR with it...my old GTX580 is still hashing XMR at 225H/s which isn't bad for such on old GPU.
My GTX 960 mining ZEC now. 1 card - 175-192+- Sol/s
I think that this is a good indicator for the old video card))