Introduction and Features
Targeting consumers on a tight budget with four models ranging from 450W to 750W.
Introduction
Cooler Master recently refreshed their MasterWatt Bronze Series, which is targeted towards budget-conscious consumers and now includes four power supplies: 450W, 550W, 650W, and 750W models. All four power supplies feature semi-fanless operation, semi-modular cables, 80 Plus Bronze level efficiency, and come backed with a 5-year warranty. We will be taking a detailed look at the new MasterWatt 650W PSU in this review.
Cooler Master MasterWatt 650W PSU Key Features:
• 650W Continuous DC output at up to 40°C
• Semi-fanless operation (under 15% load)
• Semi-Modular cables (16 AWG PCI-E power cables)
• 80 PLUS Bronze certified (85% Efficiency)
• DC-to-DC converters for +3.3V and +5V outputs
• Single +12V output
• Quiet 120mm Silencio cooling fan
• Active Power Factor correction with Universal AC input (100 to 240 VAC)
• Safety protections: OCP, OVP, UVP, OPP, OTP, and SCP
• 5-Year warranty
• $57.90 USD (Amazon.com October 2018)
Here is what Cooler Master has to say about their MasterWatt Bronze PSUs:
“The MasterWatt is an 80 Plus Bronze power supply with an innovative semi-fanless mode. Under 15% load, the MasterWatt fan remains idle, offering zero dBA. When demand for power increases, a gradual fan curve provides measured cooling with little to no noise at any output level. Dual forward / DC-to-DC topology is employed to keep the voltage stable in all conditions. For increased performance, MaterWatt is equipped with 16 AWG power cables, which reduce resistance thereby increasing efficiency.”
| Review Terms and Disclosure All Information as of the Date of Publication |
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|---|---|
| How product was obtained: | The product is on loan from Cooler Master for the purpose of this review. |
| What happens to the product after review: | The product remains the property of Cooler Master but is on extended loan for future testing and product comparisons. |
| Company involvement: | Cooler Master had no control over the content of the review and was not consulted prior to publication. |
| PC Perspective Compensation: | Neither PC Perspective nor any of its staff were paid or compensated in any way by Cooler Master for this review. |
| Advertising Disclosure: | Cooler Master has purchased advertising at PC Perspective during the past twelve months. |
| Affiliate links: | This article contains affiliate links to online retailers. PC Perspective may receive compensation for purchases through those links. |





