PSU efficiency calculation

[Ruso21]

my questions is, how to calculate the final watt consumption???

many people use the APW7 which has...
220V Output: 150A / 1800w
120V Output: 67A / 800w
PF 0.99 (almost perfect)
https://shop.bitmain.com/product/detail?pid=000201809111802447941Bf38AO30604

below the specs on that page there are 2 charts, 1 it says the efficiency which shows 93% at 150A; this means full load on 220v with 7% loss.
now the Zig Z1 Pro consumes 1500w, so... how to calculate this part? which one is correct???

1800w -7% = 1674 watts
or
1500w / 0.93% = 1612 watts

from the other hand, this is something similar with the PC PSU
https://www.velocitymicro.com/blog/what-is-psu-efficiency-and-why-is-it-important/

[HeRetiK]

With a consumption of 1500W you're looking at I = 1500W / 12V = 125A which according to the table is at an efficiency of ~94%

This means that with the miner you mentioned you'll look at a power draw of roughly 1500W / 0.94 = 1595.74W

Looking at the chart the PSU's peak efficiency is 95% at 60A * 12V = 720W

This is assuming an input voltage of 200-240V as per the Bitmain chart.



For reference:
https://www.rapidtables.com/convert/electric/Watt_to_Amp.html

[Ruso21]

With a consumption of 1500W you're looking at I = 1500W / 12V = 125A which according to the table is at an efficiency of ~94%

This means that with the miner you mentioned you'll look at a power draw of roughly 1500W / 0.94 = 1595.74W

Looking at the chart the PSU's peak efficiency is 95% at 60A * 12V = 720W

This is assuming an input voltage of 200-240V as per the Bitmain chart.



For reference:
https://www.rapidtables.com/convert/electric/Watt_to_Amp.html

Thanks HeRetiK...

[Grim]

Is this PSU really that efficient?

95% at 50% load is titanium+ category.


Has anyone meassured it themself?


Seems like a really good deal.

[Ruso21]

Is this PSU really that efficient?

95% at 50% load is titanium+ category.


Has anyone meassured it themself?


Seems like a really good deal.

the efficiency in that specs is not real, i asked bitmain about an APW7 with a B7, they told me that i can consider 80% at 100%
so on 220Vac at 100% the efficiency might be 85%