Cold Test Results

For the testing of PSUs, we are using high precision electronic loads with a maximum power draw of 2700 Watts, a Rigol DS5042M  40 MHz oscilloscope, an Extech 380803 power analyzer, two high precision UNI-T UT-325 digital thermometers, an Extech HD600 SPL meter, a self-designed hotbox and various other bits and parts. For a thorough explanation of our testing methodology and more details on our equipment, please refer to our How We Test PSUs - 2014 Pipeline post.

The energy conversion efficiency of the new Ion+ 760P at room temperature is excellent, even for an 80Plus Platinum certified product. Considering the 80Plus Platinum certification requirements for either 230 VAC or 115 VAC input, the Ion+ 760P significantly surpasses the minimum required efficiency at any given load. It reaches up to 94.4% efficiency at 50% load with an input voltage of 230 VAC, which drops to 92.6% if the input voltage is 115 VAC. The average nominal load (20%-100%) efficiency is 93.1% and 91.3% with an input voltage of 230 VAC and 115 VAC respectively. Considering that 80Plus certification testing takes place at temperatures lower than the current ambient temperature of our testing environment (room temperature is defined as 25 °C and that is used for 80Plus certification tests, while our room temperature was over 27 °C at the time of our testing), the efficiency of the Ion+ 760P is well above the minimum 80Plus Platinum requirements.

We tested the Ion+ 760P with the semi-fanless mode activated, where the fan is programmed not to start until necessary. Despite the relatively high room temperature, the fan of the PSU did not start before the load exceeded 300 Watts, which is comparatively speaking a very high tripping point for semi-fanless designs. After that point, the fan started and continued to increase its speed alongside with the load and yet barely reached up to 40% of its maximum speed at full load, with our instruments reading 38 dB(A). The operating temperature of the Ion+ 760P is very low for a unit with this kind of output, barely reaching over 55 °C under maximum load.

The Fractal Design Ion+ 760P PSU Hot Test Results (~45°C Ambient Temperature)
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  • cygnus1 - Wednesday, August 7, 2019 - link

    Agreed. I had never heard of Sirfa, but based on reading the review I feel like the normal Sirfa PSU is a completely different animal to what Fractal Design has had them build. These new Fractal Design PSU's certainly impressed the knowledgeable reviewer. And on top of the apparent quality and benchmark performance, a company like Fractal Design is willing to put a 10 year warranty on them, I think you can bet on them being pretty top notch.
  • TheUnhandledException - Wednesday, August 7, 2019 - link

    Weak sauce for Fractal using those bogus "void if seal broken" stickers. Lying to customers is not cool. I don't do business with companies that blatantly lie to their customers.
  • eva02langley - Wednesday, August 7, 2019 - link

    I trust your review better than Toms who actually have the total opposite opinion about the new Fractal Design power supplies.
  • sheh - Saturday, August 10, 2019 - link

    The text says the fan start at 300W, but the graph shows a temperature drop starting at about 220W?
  • juhatus - Thursday, August 15, 2019 - link

    No Anandtech cookie award for what seems to be a top-notch PSU? Whats holding it back from getting a "top buy"-medal or such? Or have you given up on them.
  • Timur Born - Saturday, August 17, 2019 - link

    Unfortunately no mention of electronics noise, only fan noise.

    Thanks for the otherwise good review, though.
  • quickbooks0 - Wednesday, September 4, 2019 - link

    Its a great pleasure reading your article post

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