Cheap power supplies are risky to buy, but some of the budget PSUs are worth it for gaming PC builds that need to save money for other components. Here's one of the good ones.
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The Cooler Master MasterWatt 650 could do with a better name -- what with Cooler Master's obsession with its own name -- but the MW650 is a reasonable performer at the $55 price-point. We're working our way toward reviewing other similarly priced power supplies, so hope to soon look at competition from Corsair, EVGA, Seasonic, et al. in the PSU space. It will take time to build comparative charts for our PSU reviews, but for now, the good thing about a power supply is that it can be tested in a vacuum and still provide a conclusion as to whether it's any good. We'll soon have the value aspect of these reviews. This review added new testing for PSUs, and we'll soon be adding even more -- with thermals on our to-do list in the immediate future.

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We toured factory that makes these PSUs in 2020 check that out here:    • How Power Supplies Are Made (2020) | ...  

We also looked at the R&D processes & equipment at that factory here:    • Power Supply Testing & Failure Analys...  

We did a deep-dive on flaws in the 80 Plus Certification process here:    • Power Supplies Need a New Rating Syst...  

And the inspiration for that piece was our review of the not-so-Gold Aresgame AGS850 here:    • Top Amazon PSU Falsely Claimed 80 Plu...  

RELATED PRODUCTS

Cooler Master MasterWatt 650 on Amazon: https://geni.us/LFOgom
EVGA SuperNova 650 G5 on Amazon: https://geni.us/Bfy6
Seasonic Focus GX-650 on Amazon: https://geni.us/YYkPm1

TIMESTAMPS

00:00 - A Cheap Power Supply
02:45 - Cooler Master MW650 Specs
04:54 - Tear-Down & Component Analysis
11:41 - Packaging, Construction, Cables, and Connectors
14:35 - Efficiency Testing
15:47 - Power Factor Results
16:07 - Voltage Regulation Across Loads
18:01 - Voltage Ripple
19:14 - Thermals and Cooling
20:27 - Protections - SCP, OCP & OPP Testing
21:12 - Conclusion

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Host, Test Lead: Steve Burke
Testing: Patrick Stone
Video: Andrew Coleman & Keegan Gallick