It takes like half a minute for all the cards to start hashing on a dualcore Pentium but after that it's going great (100% GPU usage) so you topped the default intensity.
Gigabyte GTX 1070 G1 with +80 Mhz core OC and stock memory:
- at 80% TDP I get 2.71 Gh/s;
- at 100% TDP I get 2.8 Gh/s;
- at 111% TDP I get 2.94 Gh/s without temp throttling (above my go to temp target).
I could OC higher but won't bother. At 2.8 Gh/s it's $1.59 per day at the moment which is not very good.
PS: None of my G1's are stable at 2100 Mhz for more than a few minutes.
100% inline with my results. I also clock my cards to 2000 Mhz exactly, not stable to go above in multi-gpu rig.