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Anyone look at the efficiencies of the later batches?

I was talking to my buddy who has a bunch of Batch 6, 4.05TH ones running at 4.4-4.5TH but only using 1150-1190Watts at the wall with EVGA 1300G2's.
He told me a few were even clocked at 4.2TH when he received it from factory at 625MH.

So that works out to be more efficient than all the other batches, no? I'm talking about real world @ wall usage , not the BS they usually advertise.
Maybe Batch 6's are the ones to get and Batch 7-8 is to be avoided like the plague as a LOT of them are having issues.

Batch 1 uses 1210 W to get 4.86 TH/s = Actual Efficiency: 0.2490 J/GH
Batch 2 uses 1160 W to get 4.66 TH/s = Actual Efficiency: 0.2489 J/GH
Batch 3 uses 1210 W to get 4.86 TH/s = Actual Efficiency: 0.2490 J/GH
Batch 4 uses 1160 W to get 4.66 TH/s = Actual Efficiency: 0.2489 J/GH
Batch 5 uses 1210 W to get 4.86 TH/s = Actual Efficiency: 0.2490 J/GH
Batch 6 uses 1042 W to get 4.05 TH/s = Actual Efficiency: 0.2572 J/GH
Batch 7 uses 1278 W to get 5.06 TH/s = Actual Efficiency: 0.2573 J/GH
Batch 8 uses 1293 W to get 4.73 TH/s = Actual Efficiency: 0.2734 J/GH

It is all about efficiency 24 hours a day!

Looks to me that the Efficiency is going down.

Is that actual measured watt usage or what is claimed by Bitmain.
My B1 used 1280-1290watts at full blast (Just around 4.85TH.

Hmm, that's not that good.
My B1 is at 625 with 1230-1235 watts running 5017GH/s

1235/5017 = 0.24616 Very Nice!

I think it's nice to but the HW is at 0,01

So would that be a problem on the long run? As i expect to only run it for max a year.

I think it is all a shot in the dark. We have no proof of anyone actually running these systems for a year, but electronics (in general) want to run cool and without errors. We as the owners of miners want to run them as profitable as possible in the form of the highest hasharate. With that being said, the general rule that I have seen on this is that HW should be as low as possible: 0.03 or less. I would personally "Save&Apply" to get less than this and also adjust the Frequency to get better than this.

At this efficiency you'd be fine with 1% HW or any HW%. HW% doesnt do anything per se, its just an indication of how many share its wasting, it does not matter as in, it does not cause damage to the unit, it doesnt lose 1 HP everytime it makes an error.