Hi all. My data center is getting warm (air temp at the entrance to the miners is around 85F) and I was curious if one brand of miner PSU vs. the other was dealing with it any better.
Awhile back I ordered a
https://www.amazon.com/DROK-Digital-Multimeter-Voltmeter-Ammeter/dp/B01MRZAFAF/ref=pd_sbs_469_1 thinking I could use it on one of my power panels, but it was way too light duty. Instead I spiced it into a spare power cord and put the whole thing in a plastic wall box. A few wire nuts and a bit of electrical tape later I had a fully functional "watt meter" for my power connections.
Originally I planned on using existing power supplies, one APW3++ and one Sorcerer. For each test I allowed an Avalon 841 miner to fully spin up, measured by watching the power usage slowly climb until it was bouncing +/- a few watts.
Test 1: APW3++ 1439.4 Watts, 6.29 Amps at 232.1 volts.
Test 2: Sorcerer 1451.3 Watts, 6.33 Amps at 232.6 volts.
Then decided to unbox a new APW3++ and test it on the Test 2 miner, since the results were close, and we know individual miners vary a bit:
Test 3: APW3++ 1448.4 Watts, 6.32 Amps at 232.4 volts.
Good news... its appears the power supplies are, for all intents and purposes, equally efficient.
The APW3++ has a higher rated temperature range, but past experience (especially at the low end), educated me to ignore those ratings by a wide margin.
I know this isn't exciting news, but figured others might be curious as well.