Hot Test Results (~45°C Ambient Temperature)

The XPG Core Reactor II 1200W 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 unit’s 50°C rating is reassuring, especially for a mid-range 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.

In the hot testing phase, the XPG Core Reactor II 1200W PSU shows a slight decline in efficiency compared to the cold testing results. While the cold test yielded an average nominal load efficiency of 89.9% at 115 VAC and 91.3% at 230 VAC, the hot test results are slightly lower at 89% for 115 VAC and 90.4% for 230 VAC. While the reduction is measurable, it is better than average for a product of this performance class. It is also worth mentioning that despite the very high temperatures there are no hints of thermal stress.

Under hot testing conditions, the cooling fan of the XPG Core Reactor II 1200W PSU exhibits a fairly typical operational behavior. The fan starts operating slightly earlier compared to the cold test conditions, reacting to the increased ambient temperature and load. Once operational, the fan's speed increases steadily, particularly as the load approaches 1000 Watts. The fan reaches its maximum speed of 2300 RPM when the load is slightly over 1000 Watts, above which point temperatures will rise a bit sharply if the unit is forced to remain heavily loaded.

Cold Test Results (~25°C Ambient Temperature) Power Supply Quality & Conclusion
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  • PeachNCream - Tuesday, December 19, 2023 - link

    They know their audience if they're including girl-in-spandex stickers.
  • Threska - Tuesday, December 19, 2023 - link

    Seems the majority have already licked the most important "bells and whistles" and that's it working like a competent PSU within it's ranges. Bells and whistles would be RGB lighting or USB monitoring.
  • blppt - Wednesday, December 20, 2023 - link

    The RTX5090 probably will require an actual reactor the way things are going.
  • tipoo - Wednesday, December 20, 2023 - link

    Is there an in depth Meteor Lake review coming?
  • Ryan Smith - Wednesday, December 20, 2023 - link

    Yes. Though don't expect anything until after the holiday period.
  • sonny73n - Wednesday, December 20, 2023 - link

    PSU cables are still as stiff as ever and no new design innovation.
  • Threska - Wednesday, December 20, 2023 - link

    With modular PSU cables should be easier to replace with something silicone. Only thing fixed is the ATX cable.
  • timecop1818 - Friday, December 22, 2023 - link

    fixed how? every recent modular PSU I've seen the 24atx part is also modular, removable.
  • meacupla - Saturday, December 23, 2023 - link

    Softer cables tend to use less copper and less copper is not a desirable feature for ATX PSU cables.
    You really don't want to go less than 18AWG. Some higher quality PSUs use 17 or 16AWG for EPS/PCIe.
    If you want to go fully custom, be my guest and use 20 or 22 AWG.

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