Nexus NX-5000 Silent PSU

Power
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MP3 SOUND RECORDINGS

These recordings were made as 24-bit / 88 kHz WAV files with a high resolution, lab quality, digital recording system inside SPCR's own anechoic chamber (11 dBA ambient), then converted to LAME 128kbps encoded MP3s. We've listened long and hard to ensure there is no audible degradation from the original WAV files to these MP3s. They represent a quick snapshot of what we heard during the review.

These recordings are intended to give you an idea of how the product sounds in actual use — one meter is a reasonable typical distance between a computer or computer component and your ear. The recording contains stretches of ambient noise that you can use to judge the relative loudness of the subject. Be aware that very quiet subjects may not be audible — if we couldn't hear it from one meter, chances are we couldn't record it either!

Each recording starts with 6~10 seconds of room ambient, followed by 10 seconds of the product's noise. For the most realistic results, set the volume so that the starting ambient level is just barely audible, then don't change the volume setting again while comparing all the sound files.

Sound Recordings of PSU Comparatives in the Anechoic Chamber

CONCLUSIONS

The Nexus NX-5000 lived up to its claims of being "Real Silent" (taken figuratively, not literally, which is a whole 'nuther discussion) while delivering 530W. It scored very high in both electrical and noise characteristics, demonstrating low ripple, extremely good voltage regulation over its entire range of load tests and crossload tests, good efficiency characteristics over its entire working range, and perhaps most importantly, managed to stay quiet across its entire operating range, with a peak of just 25 dBA@1m after thermally stabilizing at its full load of 530W. Running a PSU continuously at full load is an extremely demanding test and unlikely to ever happen "naturally" in practice, so it is similarly unlikely that users of this power supply will ever hear such fan speeds in their own system. The small, unobtrusive physical aspect adds to the impression of a quiet, efficient, and professional "demeanour".

It's hard to find fault with this PSU, aside from perhaps the lack of modular cabling. The NX-5000 is a great addition to Nexustek's midrange power supplies and a very strong contender in the "silent" computing enthusiast market. It fully deserves SPCR's Editor's Choice Award.

Nexus NX-5000 Balance Sheet

Likes

* 80 Plus Bronze efficiency
* Almost inaudible @ low-med loads
* Quiet (<25dBA) at max load
* Solid voltage characteristics
* Reliable at high test temperatures

Quibbles

* No modular cabling

Nexus NX-5000 Power Supply

SPCR Editor's Choice Award

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SPCR Articles of Related Interest:
Power Supply Fundamentals
Recommended Power Supplies
SPCR PSU Test Rig V.4
Enermax Eco80+ 500W PSU
Nexus Value 430 PSU: Affordable Silence
X-650: Seasonic hits Gold

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