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Corsair CX650M 650W Semi-Modular ATX 80 PLUS Bronze Power Supply

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About this product


  • 650W of continuous power supplies you with enough headroom for overclocking and future upgrades
  • ATX form factor allows the power supply to be connected to almost any motherboard and fits in most standard cases
  • Semi-modular design means you only use the cables you require, improving airflow

Product overview

• 650W of continuous power supplies you with enough headroom for overclocking and future upgrades
• ATX form factor allows the power supply to be connected to almost any motherboard and fits in most standard cases
• Semi-modular design means you only use the cables you require, improving airflow
• Produces 35dBA at full load for a whisper quiet computing experience
• 84% efficient with a 80 PLUS bronze rating, providing you with a very efficient power supply
• Manufacturer part number: CP-9020103-UK

What can I run from this power supply?
This 650W power supply (PSU) can provide plenty of power for a high-end computer system, with enough headroom left for overclocking components. A basic power supply that is very efficient and runs quietly due to its large fan, providing you with low energy wastage and a quiet experience. Using the extra power left over, you can overclock your components (such as your CPU or GPU) and be able to install more power hungry components for future upgrades.

How quiet and efficient is this power supply?
This Corsair power supply comes with an 80 PLUS bronze efficiency rating, which means that the power supply must be at least 80% energy efficient at various loads. The CX650M is approximately 84% efficient, which means that it wastes roughly 16% of electrical energy as heat. The large diameter, thermally controlled fan makes this power supply quieter at lower loads, while the large diameter reduces noise when you're pushing your system hard. Under a full load this power supply produces 35dBA of noise, giving you a whisper quiet computing experience.

How does the semi-modular design benefit me?
The semi-modular design of this power supply comes supplied with only the necessary cables attached. In this case the motherboard and CPU power cords have already been connected to the power supply for you. With the remaining cables you only need to plug in the ones that you need, improving the airflow and aesthetic look of your build as there are fewer extra cables hanging around.

Rated 5 out of 5 by from Corsair CX650M Semi-modular ATX 80 Plus Bronze I built a new computer so needed a new power supply ( kept the old comp. as back-up; it has corsair power for at least 5 years and no problems). I always buy Corsair for myself and recommend to others, as it has always been a very reliable make and being semi-modular means you don't have unwanted cables filling your case. Before I bought this one, I compared several other makes and the CX650M came out on top for performance and value for money.
Date published: 2016-08-19
Rated 1 out of 5 by from biggest pile of junk bought this to build a new computer fitted it and nothing! contacted Maplin's to change unit and told that they will take it back and look at it this doesn't help me as I need to finish building. checked on line to see that corsair have problems with said unit. don't buy this a waste of money
Date published: 2017-01-07
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Power Supply

80 PLUS Certification:



20+4-Pin Main Connector:


4-Pin 12V Connector:


SATA Connection:


4-Pin Molex Connector:


6-Pin PCI-e Connector:


Floppy Drive Connection:




5 years

Dimensions & Weight













Package Contents:

CXM Series Power Supply
Power Cord
Modular Cable Pack
Mounting Screws

Product Specifications

Over Voltage Protection:


Over Current Protection:



United Kingdom

Power Factor Correction:

Yes – active

Under Voltage Protection:


Safety Standards:


Cooling System:

1 x 120 mm fan

Single Rail Or Multi-Rail:


Operating Specification


<35 dBAdBA

Operating Specifications

Form Factor:


Peak Power Output:


Sustained Power Output:




Input Frequency Range:

47 - 63 HzHz



Modular Type:


With the cables provided, how many HDD can I power up or do i need to buy addtional power cables for connecting HDD? As i was thinking to connect 3 HDD to my pc plus x1 SSD.

Asked by: nilesh
The cables supplied allow for up to 6 SATA power connections plus a further 4 MOLEX power The MOLEX can be changed to SATA power with adaptors (sold separately) to give up to 10 devices. This image from the manufacturers website shows the included cables. Hardwired into the Power Pack is 1 x 8/4 pin configurable CPU power connector 1 x 20/24 pin configurable ATX power connector Modular connections are as follows 2 x PCI-E power cable with 2 x 6/8 pin configurable PCI-E power connectors on each. 1 x MOLEX power cable with 4 x MOLEX power connectors 1 x SATA power cable with 4 x SATA power connectors 1 x SATA power cable with 2 x SATA power connectors
Answered by: Les
Date published: 2017-12-17

Does this version or the 750w version support multiple graphics cards in sli

Asked by: Shea
Yes 6-pin PCI-e connectors 4
Answered by: Dominic
Date published: 2016-07-19
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