The XPG Core Reactor II VE 850W PSU Review: Our First ATX 3.1 Power Supply
by E. Fylladitakis on May 2, 2024 10:00 AM EST- Posted in
- Cases/Cooling/PSUs
- PSUs
- 80Plus Gold
- XPG
- ATX v3.1
Cold Test Results (~25°C Ambient Temperature)
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 XPG Core Reactor II VE 850W PSU surpasses the requirements set by the 80Plus Gold certification with impressive margins. When operating with a 115 VAC input, this PSU demonstrates an average nominal load efficiency of 90.9% across a range from 20% to 100% of its capacity, which further increases to 91.7% with a 230 VAC input. The efficiency peaks at a load slightly less than half its maximum capacity. Low load efficiency is excellent, notably superior to that of many other units with a similar power output.
The XPG Core Reactor II VE 850W PSU does not have a "hybrid" fan mode - its fan is operational at all times. Even in ambient room temperature, the fan operates continuously but at very low speeds while the load is low, gradually increasing its speed as the load escalates beyond 500 Watts. This simplistic approach reduces the complexity of the design a little and the PSU virtually remains inaudible while the load is very low.
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Reflex - Friday, May 3, 2024 - link
Tesla announces a lot of unverifiable things. No point in doing their PR for them. Replyzodiacfml - Saturday, May 4, 2024 - link
true but they can revolutionize efficiency in datacenters as they have existing solar and battery products and services. it's just a matter of scale which is likely the cause of delays, like they can't simply ask Nvidia to make 48 volt power AI graphics cards-unless Tesla buys so much or convince other tech giants to go 48V ReplyTheinsanegamerN - Monday, May 6, 2024 - link
That would require sweeping industry wide changes and break decades of compatibility. Fat chance that happens. Replyballsystemlord - Thursday, May 2, 2024 - link
@Ryan , the "hot box testing" section has 2 images of the conversion losses and 0 images of the fan curve. Please fix this. Thanks! ReplyRyan Smith - Friday, May 3, 2024 - link
D'oh! Thank you for catching that.Unfortunately that's a problem with the image itself (right image, wrong data), and needs to be regenerated by hand. So I'm not able to immediately fix it. I'll have Tracy upload the correct one as soon as possible. Reply
Ryan Smith - Saturday, May 4, 2024 - link
And fixed. Replywr3zzz - Thursday, May 2, 2024 - link
What's the safest way to use previous gen 1000W PSU for RTX4090/5090? ReplyrUmX - Friday, May 3, 2024 - link
For 5090, we don't know. That GPU didn't release yet. ReplyRyan Smith - Friday, May 3, 2024 - link
Make sure the cable you're using is making very good and tight connections at both ends.If there is a problem, it's much more likely to occur on the video card end of things, and those are already by and large using the new 12V-2×6 connector since it's such a quick swap. Reply
shabby - Friday, May 3, 2024 - link
Keep a fire extinguisher close by... Reply