Post
Topic
Board Hardware
Re: What causes the change in TH/s ?
by
macgyver007
on 15/02/2015, 15:04:16 UTC
So it's not hard to confuse me about my SP20's right now but this is really don't understand.

Right now, all SP20's have their fans set to auto and i can see they are all pulling somewhat the same mining rate. Their temperatures aren't very different but over the last 5 minutes I have units reporting 1428, 1586 and 1865 . This is quite a difference and i see it reporting that rate to MRR too :


The only thing i've changed of late was my pool , but this was done at MRR and not locally. I switched the 'when not mining' pool to CKPool From BTCGuide as a test.

Would this pool change have had any effect on the local hash rate of the machine (i don't think so) If not any ideas ?


First off you can disregard the 1865 as there is no way any SP20 is hashing at that speed especially with 33C inlet temp
Easy fix here and your temps are WAY too high....all your chips are throttling for sure with the fan at 10%... what temperature is the room the miners are in?
Can you post a screenshot of the ASIC STATS please but I already know what I am going to see there  I just am curious about the numbers  Cool
You are using version 2.6.7 which is 1 of the earlier versions they added auto fan. I Strongly suggest to upgrade to 2.6.14 firmware for starters and set the upper voltage limit to .72 with auto fan and post your results please.. u should be getting ~1.5TH and 1050W with .72v cap compared to the 1200ish watts its using now for the same effect
Your temps will most likely not be in this range but the hashrate should be in check with the voltage