Power Efficiency Insights for APW3, APW3++, and APW7

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leo2011Full Member
Posts: 57 · Reputation: 419
#1Nov 13, 2017, 01:42 AM
Just wanted to share some charts that highlight how efficient the APW3, APW3++, and APW7 are running at 230V. I also included the APW3++ at 115V. The APW7 can also run at 115V with a max output rated at 1000W, but I couldn't find much detailed efficiency data for that setup at the moment. All the info comes straight from Bitmain and I did some rough tests to verify the PSU efficiency.
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rav3n51Member
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#2Nov 13, 2017, 03:56 AM
i measured from the wall values with smart meter and there was almost no difference between APW3++ and APW7 regarding efficiency. in this case the power draw.. maybe 1-2 watts. so nothing. only apw7 was performing better at high ambient temps where apw3++ shuts off quite fast
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Posts: 7 · Reputation: 96
#3Nov 13, 2017, 05:27 AM
Is it me or the values of the apw3 don't add up in tje two graphs? E.g. at 100A, they have different values Or what did i miss?
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dave_satoshiSenior Member
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#4Nov 15, 2017, 01:53 PM
Top graph is at 230v, bottom one is at 110v which is why there are differences...
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mike_farmSenior Member
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#5Nov 15, 2017, 05:10 PM
Yep, the efficiency is voltage related.
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hodler2019Legendary
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#6Nov 15, 2017, 08:08 PM
Yeah   the Apw3+ can not run an s9 on 120 volts the Apw3+ can run an s9 on 240 volts The Apw3+ can run an L3+ on 120 volts or 240 volts.
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cobr42019Member
Posts: 7 · Reputation: 147
#7Nov 15, 2017, 09:21 PM
With the recent firmware updates, the APW3++ A3-1600 can easily handle an S9 on 110v as the power consumption has dropped to around 1250w still not as clean or efficient as running at 220v. That is of course unless you are overclocking.
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