Final Thoughts and Conclusions
Cooler Master’s new MasterWatt power supplies are an update of their mainstream power supply lineup. All four MasterWatt power supplies feature semi-fanless operation, modular cables, 80 Plus Bronze level efficiency, and come backed with a 5-year warranty. Note: the two MasterWatt Maker 1200W PSUs are 80 Plus Titanium certified and come with a 7-year warranty while the two MasterWatt Lite PSUs are 80 Plus white, have fixed cables and come with a 3-year warranty.
The MasterWatt 550W power supply comes with a standard assortment of semi-modular cables with a combination of sleeved fixed and flat ribbon-style modular cables. The 120mm Cooler Master Silencio fan uses a Loop Dynamic Bearing (LDB) for long life and quiet operation. The power supply also features semi-fanless operation when power output is below 15%. During our tests the MasterWatt power supply delivered good voltage regulation along with good AC ripple suppression. The MasterWatt series comes backed by a 5-year warranty.
The MasterWatt PSUs are currently entering retail channels.
• MasterWatt 550W: $59.90 USD (newegg.com October 2017)
• 550W Continuous DC output at up to 40°C
• Semi-fanless operation below 15% load
• 80 PLUS Bronze certified
• Good voltage regulation
• Good AC ripple and noise suppression
• Quiet 120mm Loop Dynamic Bearing (LDB) cooling fan
• Modular cables
• Safety protections: OPP, OVP, UVP, OCP, OTP and SCP
• 5-Year warranty
• Teapo caps with 85°C rating
Overall a good basic power supply with minimal frills.
Cooler Master MasterWatt 550W Power Supply
Our thanks to Cooler Master for sending us the MasterWatt PSU to review.