We found another block after 1 H 5 m 24 s ! Approximately 19.6 %Diff - Found @ 2016-03-09 12:28:43
Block # 401867
Awesome Avalon6 farm

yes they are and the big fat 0 HW is incredible

So if I drop my clock a bit on my s7's and get the hardware errors to lower/non-existant the s7's are more efficient and more likely to get a block?
Blocks are slipping away on hardware errors? Crap. Should have fixed them sooner.
As Phil has already said, a low HW error rate is insignificant.
However, it's easier to look at it this way:
If you generate 1 billion diff and lose 100 in errors, that's a pretty small %
However, if you reduce that 100 to say 10, but reducing the 1 billion to 900 million, yes you've made a bad move doing that, since your total hashes has now fallen 100,000,000 to save only 90 errors.
A small number of errors is expected.
I have clocked batch 1, 2, 3, 4
Batch 10, 11
s-7's for most units best settings are a
5% freq underclock
hw's drop under .0050% and watts per gh tend to be best.
bigger under clocks like 600 to 500 will give perfect 0.0000 or 0.0001% rate but the watts per gh tend to go upwards just a hair.
over clocks vary although my batch 2 rated for 575 freq and 4660 at .25 watts can do
freq 625 5100gh with 0.0001 to 0.0009 % errors and do it at .26watts truly the best of all the s-7's that I have received.
it was one of the two in the screen shot above and the controller can do 6 boards and run 4 fans.
and I never touched the firmware. (thank god as the newer firmware killed off the 6 board 4 fan action)