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.

Interestingly, the 1STPlayer Steampunk 750W PSU easily meets the 80Plus Gold certification standard when powered from either a 230 VAC or 115 VAC source. As a matter of fact, it almost complies with the 80Plus Platinum certification, surpassing its requirements for the most of the chart. It only suffers from a quickly diminishing efficiency at loads greater than 90%, dropping its efficiency down to 88.3% under maximum load, which prevented the unit from getting an 80Plus Platinum certification. In fact we're a bit surprised that the manufacturer didn't use this platform to make an 80Plus Platinum unit as well. 1STPlayer could have easily used the same platform and dialed down the maximum rated power output of the unit slightly, which would have allowed them to market a slightly less powerful PSU but with an 80Plus Platinum certification.

Overall 1STPlayer kept everything as simple as possible, and they did not implement any advanced thermal control schemes, such as semi-fanless operation. The fan is dead quiet at low loads but will start becoming noticeable when the unit is at about 50% of its rated capacity. Noise levels keep climbing after that, reaching 46.1 dB(A) under maximum load, a high figure for most users. That said, it would not be sensible to run the PSU at a maximum load for prolonged periods of time, so the noise levels during regular use should always be within comfortable levels so long as the unit is installed inside a well-ventilated case.

The 1STPlayer SteamPunk 80+ Gold 750W PSU Hot Test Results
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  • PeterCollier - Tuesday, May 12, 2020 - link

    The high efficiency at low loads should help defray electricity costs with running Zen/Zen+/Zen 2 chips. Reply
  • Operandi - Tuesday, May 12, 2020 - link

    And doubly effective when running 14nm Intel chips. Reply
  • eek2121 - Tuesday, May 12, 2020 - link

    This PSU does not work with Intel chips. It does not provide enough power. 😉 Reply
  • PeterCollier - Tuesday, May 12, 2020 - link

    Ha! That's a good one. Reply
  • Deicidium369 - Tuesday, May 12, 2020 - link

    Well Cheap Chinese parts tend to work best with other Cheap Chinese parts.... Reply
  • South_DL - Tuesday, May 12, 2020 - link

    Truth! Reply
  • Spunjji - Tuesday, May 12, 2020 - link

    If you can't say something relevant, bash AMD! 😒 Reply
  • rocketman122 - Wednesday, May 13, 2020 - link

    Why the hell is it so hard to put the price in the first paragraph. Shet im getting tired of nonsense like this. I come here cause im tired of the younger crowd at th.com but then nonsense like this males me go back. And the fact reviews are not often enough. Once every 5 days to a week. Problems getting sponsored products to review? Reply
  • Ryan Smith - Wednesday, May 13, 2020 - link

    Due to a lack of units in the US, there's currently no useful pricing available.

    "At the time of this review, the PSU is readily available only in Asian markets. This is obviously because global shipping has been greatly affected by the coronavirus pandemic, but it makes it very difficult for us to reach a solid conclusion without knowing the retail price of the product"
    Reply
  • StrangerGuy - Thursday, May 14, 2020 - link

    Nah its because Asia is now the more critical market even before Covid. China never had the US drought of MSI B450 Mortar/Tomahawk boards during the Zen 2 launch period and AMD is more popular there than the US. Reply

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