I've already learnt a few things so hang on in there.
Power for me at home is .0501 KW/h , however these will be going to a farm building where it's about half that. I'm always looking for a way to reduce power and noise and was happy to learn about the firmware upgrade with fan control.
When philipma1957 suggested i can run two SP20's off the power supply i thought i'd give it a go and see what happens.
Initially i didn't do anything except stack them, flip them and power up.
https://dl.dropboxusercontent.com/u/201234/gallery/side_small.jpghttps://dl.dropboxusercontent.com/u/201234/gallery/rear_small.jpgThe units happy sat there for about an hour running at 1.3 or 1.4TH/s .. Couldn't believe it, surely this is the solution to my power concerns.
https://dl.dropboxusercontent.com/u/201234/gallery/1374.jpghttps://dl.dropboxusercontent.com/u/201234/gallery/asic1.jpgPower consumption is more than acceptable at 1935.7w for 2 units :
https://dl.dropboxusercontent.com/u/201234/gallery/power.jpgThen i could hear the units start to spin up and down. A quick look at the miner page and the hash rate had halves. A check on the ASIC stats it seems the the power connection is lost on the daisy chain on the units :
https://dl.dropboxusercontent.com/u/201234/gallery/power2.jpgSo i'm guessing it's a balancing act of finding what draw you can handle on 1 PSU before you hit an overload.
I did try the settings show by Philip but then each miner would only output around 550GH/s .
I've now changed the daisy change configuration on the back of the power the try and spread the load across all connections from the PSU's and the SP20.. If i could find a happy medium around 1.3TH/s sharing a power supply then that would be fantastic, even if i have to upgrade to a 1000w PSU as it means i can run another 3 machines without buying any more PSU and Amazon will return these and i get a £100 saving, which is 1/3rd of another miner. However if i can find the right balance using these i have then at £70 a PSU that's quite a saving up front and then on power draw.
Thanks for the continued help all..
