NZXT E Series 850W PSU Review: An Analog Platform With Digital Enhancements
Why you can trust Tom's Hardware
Cross-Load Tests & Infrared Images
Our cross-load tests are described in detail here.
To generate the following charts, we set our loaders to auto mode through our custom-made software before trying more than 25,000 possible load combinations with the +12V, 5V, and 3.3V rails. The load regulation deviations in each of the charts below are calculated by taking the nominal values of the rails (12V, 5V, and 3.3V) as point zero. The ambient temperature is between at 30°C (86°F) to 32°C (89.6°F).
Load Regulation Charts
Efficiency Chart
From 140W to around 590W on the +12V rail, NZXT's E850 delivers more than 90% efficiency (even with increased load on the minor rails). But it would be nice to see a region, even a small one, with efficiency exceeding 92%.
Ripple Charts
Infrared Images
We apply half-load for 10 minutes with the PSU's top cover and cooling fan removed before taking photos with our modified FLIR E4 camera that delivers 320x240 IR resolution (76,800 pixels).
The bulk caps stay close to 50°C, while the polymer caps on the DC-DC converters go up to 60°C. In general, temperatures inside the E850 stay pretty low, so there's plenty of headroom for a more relaxed fan profile.
MORE: Best Power Supplies
MORE: How We Test Power Supplies
MORE: All Power Supply Content
Current page: Cross-Load Tests & Infrared Images
Prev Page Protection Features & DC Power Sequencing Next Page Transient Response TestsStay On the Cutting Edge: Get the Tom's Hardware Newsletter
Get Tom's Hardware's best news and in-depth reviews, straight to your inbox.
Aris Mpitziopoulos is a contributing editor at Tom's Hardware, covering PSUs.
Micron launches DDR5-6400 CUDIMMs and CSODIMMs for Intel Core Ultra 200S CPUs — DDR5-6400 kits up to 32GB capacity with C52 timings
Google adopts small nuclear power reactors at unprecedented scale — inks deal for seven reactors to feed AI data centers
Leaked MSI slide mentions Arrow Lake Refresh — reignites hopes that LGA 1851 will last more than a single-generation