Hot Test Results (~45°C Ambient Temperature)

The FSP Hydro Ti Pro is rated for operation at an ambient temperature of 50°C. In the realm of PC power supply units (PSUs), their categorization often hinges on their temperature ratings, where a 50°C rating is indicative of quality high-performance products. The Hydro Ti Pro's 50°C rating is reassuring, aligning with its positioning as a premium product. This rating is a significant marker of its robustness and reliability, especially under high temperature conditions, underscoring its suitability for demanding applications and environments.

The performance of PC power supply units (PSUs) can significantly vary with changes in ambient temperature, a factor that largely hinges on the unit's design and build quality. In the context of the FSP Hydro Ti Pro PSU, its energy conversion efficiency demonstrates remarkable stability under varying thermal conditions. During hot testing, the Hydro Ti Pro shows an extraordinarily low efficiency reduction of just 0.2% at low loads, a figure that firmly sits within the realm of top-tier performance. Notably, even as the load intensifies, this decrement in efficiency remains impressively minimal, not exceeding 0.3%. This consistent efficiency profile under both low and high load conditions in elevated temperatures is indicative of the Hydro Ti Pro's superior design and thermal performance.

In challenging thermal environments, the cooling fan of the FSP Hydro Ti Pro PSU demonstrates a sophisticated operational profile. Contrary to more reactive cooling systems, the fan in the Hydro Ti Pro remains inactive until the load reaches 400 Watts, even when the ambient temperature is very high. This threshold highlights the efficiency and thermal management capabilities of the unit, allowing for substantial power delivery without immediate fan activation even under such conditions. Once the 400-Watt mark is surpassed, the fan's speed gradually increases, yet it does so in a controlled manner. The peak activity of the fan is never observed, even at maximum load, reflecting the well-engineered design capacity and capabilities of the Hydro Ti Pro.

Cold Test Results (~25°C Ambient Temperature) Gold vs Platinum vs Titanium: Gains and Energy Losses
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  • Surfacround - Wednesday, January 10, 2024 - link

    if anything he is “copying” his own web site (i believe) hardware busters. IMO, there is no better person to review PSU’s.
  • AndrewJacksonZA - Wednesday, December 27, 2023 - link

    Thanks for the detailed review, E.! I appreciate being better informed so that I can help people make better choices.
  • McGruberrr - Thursday, December 28, 2023 - link

    I purchased this PSU a while ago and encountered some qc issues with the provided cables. Specifically that several of the leads in the 12VHPWR connector were not secure. After fully seating the connector, two of the leads needed to be pushed into place with needle nose pliers individually each time it was connected. Otherwise, the compact dimensions and build quality look exemplary. My build was put on hold for other reasons so I can't speak to its real world performance.
  • wr3zzz - Thursday, December 28, 2023 - link

    Shouldn't reviews include comps to other brands, or a least a mention? This review basically just says FSP's most expensive PSU performs better than its cheaper PSU. It's useful I guess but doesn't help me much in choosing a PSU.
  • GeoffreyA - Thursday, December 28, 2023 - link

    My old computer had an AOpen PSU that, I believe, was made by FSP. It lasted 12 years, and still works, though that computer is not in use any more.
  • Rοb - Thursday, January 4, 2024 - link

    Unless I missed it you should have at least mentioned FSP's Hydro PTM+ power supplies, there's a reason the name includes the word "hydro"; but it's not because of the power supplies reviewed in this article.

    Their Hydro PTM+ series is water cooled, I don't know why these include that word; seems misleading.

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