Did you put them in p0state , did you use the same driver? If the settings and clocks are the same then may be memory is different!
Hi, thanks for the reply. I don't believe it's possible to get the 1060 into p0 state - I tried and couldn't make it work. The MSI works fine without changing to p0 (it stays in p2 as well). A quick google shows nobody else is running p0 on that card either.
The memory is hynix, according to GPU-Z. Very strange - it's reproducible with one MSI card and one ASUS card int he same system - the ASUS card hashes about 4mh slower with the same EVERYTHING.
Wonder if there's an old version of the bios I could try or something.... Any other ideas?