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Cooler Master VSM 750 Power Supply Review

Cooler Master VSM 750 Power Supply Review

A couple of weeks ago Cooler Master released a new PSU, the VSM 750. Today we have one of these semi-modular units to review.

Packaging and Bundle

coolermaster-v750-psu-box coolermaster-v750-psu-packing

Cooler Master package their V750 in a box which features a stylish image of the PSU while also noting some of the key features of the product. Inside we find the PSU protected by a cardboard shell with the cables off to the side.


Bundled with the PSU we find some product documentation, screws to install in our case a mains cable and various modular connectors using flat, plastic coated cables. The connectors present on this model are:

MB 20+4 Pin x 1
CPU12V 4+4 Pin x 1
PCI-e 6+2 Pin x 4
SATA x 8
4-Pin Peripheral x 6
4-Pin Floppy x 1

The V750 (RS-750-AMAA-G1)

coolermaster-v750-psu-fan coolermaster-v750-psu-side coolermaster-v750-psu-ports coolermaster-v750-psu-rear

Cooler Master use a matt black finish on the V-series and use minimal branding on each side. An information sticker is present and then on the opposite side we find the 12cm thermally controlled fan (Yate Loon). For outputs we have the native wiring output (braided cables) and to the left of that are four modular connectors. Then round at the exhaust we have a perforated surface with rocker switch and 3pin mains input.

The V750 measures 150x140x86mm and is Gold Efficiency certified which gives us over 90% efficiency (115v) and 92% (230V).  Cooler Master use a single 12v rail rated for 62A and the unit has an active PFC (>0.9typical). Then for protection technology we get the following on this range:

Over Current Protection (OCP), Over Voltage Protection (OVP), Under Voltage Protection (UVP), Short Circuit Protection (SCP), Over Power Protection (OPP) and Over Temperature Protection (OTP).

Cooler Master also note the use of Japanese capacitors within this unit (Panasonic, Nippon Chemi-Con 105c) as well as a design (3D Circuit) which enhanced efficiency, minimises temperatures and improves signal noise. We also note a dual DC-DC design for the 5v and 3.3v rails and full bridge topology.


At HardwareHeaven we use a custom built test bench, you can find more information on that here.

VSM 750 40°C 190w 375w 560w 750w
3.3v 3.28v 3.29v 3.30v 3.30v
5v 4.98v 5.01v 5.01v 5.01v
12v 1 11.999v 12.003v 12.001v 12.001v
Efficiency 90.5% 91.2% 92.0% 90.6%
Noise Level (PSU Only) 27dBA 28dBA 30dBA 32dBA


Ambient Temp 25°C
Exhaust Temp 25°C 28°C 33°C 35°C


Oscilloscope AC Ripple (mV p-p) +3.3 +5 +12
750w 21 20 45



Overall the build quality of the V750 is good with Cooler Master offering ok soldering and internal construction. The use of Japanese capacitors throughout the design is always appreciated and we like the nice compact chassis used here. Potentially Cooler Master could use even more modular cables (or less native if you like) to maximise the potential for tidy wiring but other than that and maybe a bit more braiding on those native cables there is little to fault.

In terms of performance the noise levels are low under normal use and efficiency good. We also get very good ripple results and the voltage regulation is strong. We also noted decent thermal performance too.

So that brings us to value where the 5-year warranty is worth noting. Past that it is very much worth shopping around in this segment. Priced appropriately it would be right at the top of our list on the semi-modular, gold certified PSU

Recommended Award

Pricing: $109 Newegg.com

About Author

Stuart Davidson

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