Yes,
@Mini_Me, you are right.
Going with 80% is a good safe zone without getting too much into components of power supplies, dont you think?
If someone knows what is going on inside a PSU thats a whole different story.
12x5700 @ 2000W in PSU sounds about right to me if you got quality hardware.
Some people would even argue to use regular PSUs with this kind of aplication (mining 24/7).
Regular PSUs are not made for that to begin with.
I myself use server PSUs platinum rated, made for 24/7.
Some common line should be there for people.
Cheap branded aliexpress 2600Watt supplies and on top hard at the limit is just begging for failure.
No need to get into capacitators, transistors etc...noone was talking about efficiency anyway, just a safe zone.
When we mention 80% then we means the efficiency is at least 80%, when Calathia calculated 2500 * 80% = 2000 watts, this is theoretically however practically a power factor PF is involved as the psu is drawing AC at the wall and this PF depends on the psu components,
When someone find a psu with different colors of 80% label and different watts, what does that means and how to choose from them,
Lets take a 1000 Watts psu for an example, the 1000 watts means this psu will draw at the wall approximately 1000 watts at full load, now what about the 80 colored labels, the 80 label is informing this psu minimum output is at least 80% of the power at the wall minus 10% due to some impedance and interference on the power lines making the voltage and current are not in phase which yield to a power reduction, the colors refer to the level of efficiency which is more than 80% and the quality level is involved as well, the color is a way to inform the approximate increased efficiency level,
For an example 80 white label, the practical input is 2500 * 0.9 = 2250 watts then the practical output is 2250 * 80 = 1800 watts, the default power factor is 0.9 (90%) then what about the remaining 700 watts, well it transformed to heat (which means this psu is literally a mini air fryer), therefore more efficiency means less heat, less power consumption and prolonged psu life,
Now in
WestBit case, his psu real output is approximately 1800 watts that if its 80 white label, and his current rig is consuming 2300 watts at the wall then his rig real consumption is below,
2300 * 0.9 * 80% = 1656 watts, then his system is safely within range of his psu however the heat dissipation amount is,
2300 - 1656 = 644 watts (still a mini air fryer),
For White, Bronze, Silver and Gold rated 80 colored label, however the efficiency is different like below,
Label color: efficiency at 20% - 50% - 100% load and 0.9 PF
White: 82% - 85% - 82%
Bronze: 85% - 88% - 85%
Silver: 87% - 90% - 87%
Gold: 90% - 92% - 90%
Platinum: 92% - 94% - 90%
The Titanium is a different story as it main purpose to operate correctly and safely at low loads with better power factor which is very important for prolong the psu life,
Load: 10% - 20% - 50% - 100%
Effic.: 90% - 94% - 96% - 94% (the PF for loads lower than 50% is 0.95)
My recommendation is when buying a psu of 1500 watts or more then Platinum (or Titanium if one can afford it), less than that then Gold,
And all above is an estimated way that was found to organize and categorize things respectively for marketing.
