The Power

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the 4% difference between 50% and 100% load translates to a 67.3W difference in waste: we've doubled available power, but we're wasting about 2.5x as much. this isn't a huge amount relative to the input power, and a 90% efficiency at full load is nothing to sneeze at. you're not going to save much on your power bill through proper sizing, assuming power factors of at least 0.9 across the board. for purposes of heat, though, it's no good! a 94.4W waste is similar to an adult man's thermal output, and this is just from the PSU.

the 4% difference between 50% and 100% load translates to a 67.3W difference in waste: we've doubled available power, but we're wasting about 2.5x as much. this isn't a huge amount relative to the input power, and a 90% efficiency at full load is nothing to sneeze at. you're not going to save much on your power bill through proper sizing, assuming power factors of at least 0.9 across the board. for purposes of heat, though, it's no good! a 94.4W waste is similar to an adult man's thermal output, and this is just from the PSU. another thing to be cogent of is that 80 PLUS tests are performed at room temperature. the inside of your machine, especially at full load, is very likely above that, and remember that higher temperatures in this regime mean less efficient electronics. unless the ambient temperatures are around 25℃, you can expect less efficiency than the results here. this is why cases in the last decade often attempt to keep the PSU fairly thermally isolated, and why it's critical to keep your PSU egress free of dust.

<b>FIXME FIXME FIXME 2022-03-23</b>

The Power: Difference between revisions

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-the 4% difference between 50% and 100% load translates to a 67.3W difference in waste: we've doubled available power, but we're wasting about 2.5x as much. this isn't a huge amount relative to the input power, and a 90% efficiency at full load is nothing to sneeze at. you're not going to save much on your power bill through proper sizing, assuming power factors of at least 0.9 across the board. for purposes of heat, though, it's no good! a 94.4W waste is similar to an adult man's thermal output, and this is just from the PSU.
+the 4% difference between 50% and 100% load translates to a 67.3W difference in waste: we've doubled available power, but we're wasting about 2.5x as much. this isn't a huge amount relative to the input power, and a 90% efficiency at full load is nothing to sneeze at. you're not going to save much on your power bill through proper sizing, assuming power factors of at least 0.9 across the board. for purposes of heat, though, it's no good! a 94.4W waste is similar to an adult man's thermal output, and this is just from the PSU. another thing to be cogent of is that 80&nbsp;PLUS tests are performed at room temperature. the inside of your machine, especially at full load, is very likely above that, and remember that higher temperatures in this regime mean less efficient electronics. unless the ambient temperatures are around 25℃, you can expect less efficiency than the results here. this is why cases in the last decade often attempt to keep the PSU fairly thermally isolated, and why it's critical to keep your PSU egress free of dust.
 <b>FIXME FIXME FIXME 2022-03-23</b>