What kind of power supplies are you using?
3 IBM 2880 PSU with Jabberwock mods
The batch 7 uses: 1278 W (at the wall, with APW3, 93% efficiency, 25C ambient temp)
The batch 8 uses: 1293W + 10% (at the wall, with APW3, 93% efficiency, 25C ambient temp)
I'm pretty sure the batch 7 numbers are off, but with these numbers we're at 2571W per PSU for a platinum rated PSU.
I've been running these miners since the middle of december with no problem... until now.
The batch 8 uses: 1422W, 1293 + 129 (10%). Our results are a little higher than this.
Total watts used: 2700, if the numbers posted by Bitmain are correct.
Updating the firmware is always a good idea, read the change logs and see what others have experienced first. But will the B7's work on their own not alongside the B8's?
My B8 use 1415W at the wall, so that sound like accurate to me. I don't know if all B8 are the same, some people say it varies, which i doubt.
Why would you recommend people to update the firmware when there is no feature difference? They risk putting the wrong one and bricking their controllers for nothing.