Testing PSUs: Canaan vs. Bitmain

Hey everyone. My data center's heating up (the air temp by the miners is about 85F) and I was wondering how one brand of miner PSU stacks up against another in handling the heat. Some time ago, I got myself a digital multimeter thinking it would work for one of my power panels, but it turned out to be too flimsy. So, I ended up rigging it into a spare power cord and put the whole setup in a plastic wall box. A few wire nuts and some electrical tape later, I had a working "watt meter" for my power connections. Initially, I was gonna use the power supplies I had on hand, one APW3++ and one Sorcerer. For each test, I let an Avalon 841 miner warm up fully, tracking the power usage as it gradually increased until it started bouncing around a few watts. Test 1: APW3++ hit 1439.4 Watts, 6.29 Amps at 232.1 volts. Test 2: Sorcerer came in at 1451.3 Watts, 6.33 Amps at 232.6 volts. Then I decided to open up a new APW3++ and test it with the same miner from Test 2 since the results were pretty close, and we know individual miners can vary a bit: Test 3: APW3++ showed 1448.4 Watts, 6.32 Amps at 232.4 volts. Good news... looks like both power supplies are pretty much equally efficient. The APW3++ does have a higher rated temperature range, but from past experiences (especially at the lower end), I've learned to take those ratings with a grain of salt. I realize this isn’t the most thrilling info, but I thought some might find it interesting too.

You should go read Phillip's review thread and realise that the Avalon 841 power consumption actually depends a lot on your temperatures, rather than which brand power supply unit you use. https://bitcointalk.org/index.php?topic=3375954.0

I've actually read through those earlier.  Its why I wanted to test using the same miner, at the same temperature.  I didn't catch that PSU brands were tested.

If you run an Avalon 841 in a room over 80f it burns more power. I did most tests with the Corsair ax1500i But I did test the delta 2400 watt and the hp 2450 watt All of them. Run better when the room is at 67f All of them run worse when the room is at 85f I did test up to 91f with the 2400 watt delta and it pulled 1545 watts I did test up to 100 f with the atx1500i. And it pulled about 1525 watts. If you live in a seasonal place I am NJ. You will need to downclock or ac cool for 3-5 months and you will do very well for the cooler months

So the corsair are more efficient at higher temps? Makes sense for psu designed to mounted inside a desktop. Much larger intake fans on my evga 1600w than the antminer or other brands. Only draw back was $400 price tag when I bought them.