Cooler Master
Cooler Master MPX-6501-AMAAB-US Watt 650 Bronze PSU
★★★★★
650W80 plus bronze
Reliable Power with Efficient CoolingThe Cooler Master Watt Bronze 650W is a modular 80 PLUS Bronze certified power supply designed for computers. Its semi-fanless mode ensures silent operation at low loads, while its DC-to-DC topology provides stable voltage in all conditions. Specifications: B...
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.
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Overview
Reliable Power with Efficient Cooling
The Cooler Master Watt Bronze 650W is a modular 80 PLUS Bronze certified power supply designed for computers. Its semi-fanless mode ensures silent operation at low loads, while its DC-to-DC topology provides stable voltage in all conditions.
Specifications:
- Brand: Cooler Master
- Model: MPX-6501-AMAAB-US
- Power Output: 650W
- Certification: 80 PLUS Bronze
- Modularity: Modular
- Fan: Semi-Fanless (0 dBA under 15% load)
- Topology: DC-to-DC
- Cables: 16 AWG PCIe
Key Features
Semi-Fanless up till 15% load - Experience noise-free operation in normal PC loads under 15% output.
Dual Forward and DC-to-DC circuit design - The Dual Forward and DC-to-DC circuit design offers reliability and stability especially significant in +3.3V and +5V output.
5 years warranty - The MasterWatt comes with a 5 year warranty
More Conductive PCI-e Cables - The MasterWatt uses 16AWG cables for PCI-e cables. Less resistance means better efficiency.
Durable LDB bearing - Silencio technology combines sealed LDB bearings with quiet fan blades delivering a long lifetime of quiet cooling.
Specifications
Brand
Cooler Master
Model
MPX-6501-AMAAB-US
Wattage
650W
Design
Semi-modular
Efficiency Certification
80 Plus Bronze
Fan
Temperature controlled 120 millimeter fan with dustproof LDB bearing
Fan Operation
Semi-fanless up till 15% load
Warranty
5 years
Circuit Design
Dc-to-dc
PCIe Cables
Thicker 16AWG
Pros & Cons
👍 Pros
- Provides 650W of power, suitable for powering gaming PCs and workstations.
- Features a semi-modular design, allowing for cleaner cable management and improved airflow.
- Equipped with an 80 Plus Bronze certification, ensuring good power efficiency.
- Includes a temperature-controlled 120 millimeter fan with a dustproof LDB bearing for quiet and reliable cooling.
- Offers a generous 5-year warranty, indicating manufacturer confidence in product durability.
- Utilizes a DC-to-DC circuit design for stable voltage output, promoting system reliability.
- Comes with thicker 16AWG PCIe cables, designed to support the latest graphics cards.
👎 Cons
- The "semi-modular" design means some essential cables are permanently attached, potentially leading to some cable clutter.
- An 80 Plus Bronze rating is good for efficiency, but not as high as Gold or Platinum certifications found in more premium PSUs.
- The fan is semi-fanless only up to 15% load, meaning it will likely operate with audible fan noise during higher workloads.
- Specific dimensions of the power supply unit are not provided, which could be a factor for compact PC cases.
- Information regarding protection features (e.g., OVP, OCP) is not explicitly detailed in the features.
Frequently Asked Questions
What is the wattage output of this Cooler Master PSU?
This Cooler Master PSU provides 650 watts of power, which is suitable for many PC builds including those with dedicated graphics cards.
Is this power supply unit fully modular?
No, the Cooler Master MPX-6501-AMAAB-US is a semi-modular ATX power supply, meaning some cables are detachable while essential ones are permanently connected.
What efficiency rating does this PSU have?
This power supply is 80 Plus Bronze certified, indicating a good level of power efficiency for reduced energy waste.
How quiet is the fan on this power supply?
The PSU features a temperature-controlled 120 millimeter fan with a dustproof LDB bearing, and it operates semi-fanless up to 15% load, which means it will be silent during light usage.
What is the warranty period for this Cooler Master PSU?
The Cooler Master MPX-6501-AMAAB-US comes with a 5-year warranty, offering long-term assurance.
Are the PCIe cables robust enough for modern graphics cards?
Yes, this power supply includes thicker 16AWG PCIe cables, designed specifically to support the latest and more power-hungry graphics cards.
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