Quote from: canford on December 22, 2014, 12:53:14 AM

Quote from: pekatete on December 22, 2014, 12:47:53 AM

Quote from: canford on December 22, 2014, 12:13:12 AM

2. What is the HW %
0 (zero). Last try it got a an occasional HW error, but they were minor. One of the six units got a bogged down in HW errors, but then performed well when I dropped the frequency to 268.

I assume that when your avg hash-rate falls you restart(ed) immediately, so seeing you have no HW errors, could you let it run for at least an hour after that and see whether you get any HW errors and / or x's on the chips?
I also noticed that the 5s hash-rate flactuates whenever a new block is started / a block is about to end, but soon builds up, so that may be something you have to bear in mind (assuming your hash-rate recovers!).

Unit hashrate dropping sharply now after the 1 hour run, average down to 533. HW errors now 3 for 0.0093%.

If hashrate keeps falling, I will report the numbers and try again with 0800.

I'm only going to try this with the one unit, the improvement was so dramatic the last time that when it was solid for an hour, I upgraded all 6. But I have yet to have an OC last more than 90 minutes or so.

That's fair enough, if it is falling that quickly into its uptime, and now registering errors, I expect you'll soon enough see x's on chips too, and if that happened would explain the consistent hash-rate drop-off very well ...... temp build-up!

EDIT: You'll probably have a better run with the 0800 setting .... but see this out for now to get a definitive result.