Hot Test Results (~45°C Ambient)

As happens with every typical PSU, the efficiency of the FSP Hydro G Pro takes a hit when the ambient temperature rises significantly. The drop is an average of 0.6% across the nominal load range, which is reasonable for a well-designed PSU of this class. There is very little change on the efficiency drop when the PSU is heavily loaded, suggesting that the components are handling the high temperatures without any significant thermal stress.

The high ambient temperature duly results in high internal temperatures. Regardless, the component temperatures are relatively low when taking into account the efficiency and power capacity of the PSU. The Hydro G Pro is one of the few units that seem to have a significantly more efficient secondary side - the heatsink used for the two primary side transistors is substantial and does a fair job but the secondary side still runs cooler.

When the FSP Hydro G Pro operates inside an adverse environment, the cooling fan initially is fairly quiet and comfortable but only with a load of up to 300 Watts. After that point, the speed of the fan keeps increasing and even reaches its maximum speed of 2800 RPM significantly before the load is at 1000 Watts. The noise levels are very high by the time the load is at 500 Watts, and reach the practically intolerable level of 58.1 dB(A) at its peak.

Cold Test Results (~22°C Ambient) Power Supply Quality & Conclusion
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  • eva02langley - Thursday, January 19, 2023 - link

    Crmaris, pretty much the guys who is making most of the PSU reviews lately on many sites like Tomshardware, provided a good review on Hardwarebuster. You can find the screenshot there of the latest chart of the ATX 3.0 offering. Overall, the FSP Hydro is not a great PSU at all. I made a good summary and on a post, and so far it seems that Be Quiet Dark Power 13 will be the only obvious choice.

    Anyway, the offering is sad if you are looking for an ATX 3.0 PSU.

    FSP Hydro is the worst of the ATX 3.0 offering so far
    MSI ai1300p is overpriced like hell
    Thermaltake GF3 is noisy like a turbo jet
    Silverstone Hela 1200R is also noisy and only offering 5 years of warranty
    Seasonic Vertex is between a Focus and a Prime
    Be Quiet Dark Power 13 only offer up to 1000W
  • ballsystemlord - Thursday, January 19, 2023 - link

    Just so you know, the image you linked displays an image that says, "Stop, this image was hot-linked," instead of whatever chart you intended. Once again, websites break peoples' attempts at educating others.
  • eva02langley - Thursday, January 19, 2023 - link

    Just go on Hardwarebuster and compare the latest ATX 3.0 chart from the Siverstone Hela 1200R review at the bottom of the page. The FSP PSU is last.
  • ballsystemlord - Thursday, January 19, 2023 - link

    97.16% isn't so far from 100% that I'd call something "the worst." If it meets the AXT 3.0 spec, and it does, then I'd say it's a valid offering.
  • DanNeely - Thursday, January 19, 2023 - link

    Agreed. Also the 100% score is for a platinum model; and you'd expect those to score slightly higher than more affordable gold models.
  • thestryker - Thursday, January 19, 2023 - link

    This offering seems pretty squarely aimed at mainstream ATX 3.0 given the design and where it falls short. Everything I've seen on the market so far seems to cost a fair bit more (at regular prices at least) in the 1000W category with ATX 3.0.
  • MrMuunster - Tuesday, March 21, 2023 - link

    This dude making stupid claims, implying the PSU are "Worst" out of all psu in existence, pretending like this PSU unusable, even cramaris says This PSU are good enough not "OMG UNUSABLE" like your comment implying.
  • NextGen_Gamer - Thursday, January 19, 2023 - link

    @Anandtech: I've noticed this in every article now, but always thought it was something on my end. When scrolling through the articles, every once in a while, all of the text will become bold. It makes it nearly unreadable. Sometimes scrolling back up fixes it, sometimes a refresh, sometimes highlighting some text also brings it back to normal. The reason I know it is NOT me, is because before this was occurring on Chrome on my old computer; and now it is happening in Edge on a *brand new* computer.
  • ballsystemlord - Thursday, January 19, 2023 - link

    Give them the version number of your Edge browser and MS windows installation. They'll need that to try and reproduce the problem. Likewise with your Chrome install if you still have that.
  • NextGen_Gamer - Thursday, January 19, 2023 - link

    It was Windows 10 2H22, and now Windows 11 2H22. Every Chrome and Edge version from 104 or so onwards.

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