I did no mods, no paste check, nothing. Plugged them in, updated the UI and let them run.
Here is the average speed at the pool for the past 24 hours:
443 Gh/s
445
445
446
448
448
450
452
The 446 is the one in the office running slightly hotter.
They do fluctuate from one minute to the next. But the 24 hour averages are all within 9 Gh/s or only a 2% variance.
Curious to know your power supply choice and whether or not you are using 2 or 4 PCIe connectors per unit?
I am all over the board. I have 2 on a Corsair 850, 3 on the EVA 1350 as recommended and three are on server PSU's.
EDIT - Only two cables per miner.