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Cooler Master V850 Gold V2 Power Supply Review

A highly efficient power supply from Cooler Master.

Cooler Master V850 Gold V2
(Image: © Tom's Hardware)

Protection Features

Check out our PSUs 101 article to learn more about PSU protection features.

Protection Features

 

OCP

12V: 88.4A (124.86%), 12.073V
5V: 25A (125%), 5.101V
3.3V: 25.1A (125.5%), 3.309V
5VSB: 4.9A (163.33%), 4.891V

OPP

1080.37W (127.1%)

OTP

✓ (134°C @ secondary side)

SCP

12V to Earth: ✓5V to Earth: ✓3.3V to Earth: ✓5VSB to Earth: ✓-12V to Earth: ✓

PWR_OK

Proper operation

NLO

SIP

Surge: MOV
Inrush: NTC Thermistor & Bypass Relay

The OCP triggering points are correctly set on all major rails, and the same goes for OPP. Moreover, there is over temperature protection, and the rest protection features are present, as well. 

DC Power Sequencing

According to Intel’s most recent Power Supply Design Guide (revision 1.4), the +12V and 5V outputs must be equal to or greater than the 3.3V rail at all times. Unfortunately, Intel doesn't mention why it is so important to always keep the 3.3V rail's voltage lower than the levels of the other two outputs.

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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)
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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)

DC Power Sequencing Scope Shots

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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)

The 3.3V rail is always lower than the other two, so everything is fine here. 

Cross Load Tests

To generate the following charts, we set our loaders to auto mode through custom-made software before trying more than 25,000 possible load combinations with the +12V, 5V, and 3.3V rails. The deviations in each of the charts below are calculated by taking the nominal values of the rails (12V, 5V, and 3.3V) as point zero. The ambient temperature during testing was between 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit).

Load Regulation Charts

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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)

Load Regulation Graphs

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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)
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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)

Efficiency Graph

Ripple Graphs

The lower the power supply's ripple, the more stable the system will be and less stress will also be applied to its components.

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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)

Ripple Suppression Graphs

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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)
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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)
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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)

Infrared Images

We apply a half-load for 10 minutes with the PSU's top cover and cooling fan removed before taking photos with a modified FLIR E4 camera able to deliver an IR resolution of 320x240 (76,800 pixels).

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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)

IR Images

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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)
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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)
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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)
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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)
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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)
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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)
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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)
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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)
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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)
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Cooler Master V850 Gold V2

(Image credit: Tom's Hardware)

The temperatures are kept low, with the highest recorded on the main transformer that transfers power to the 12V board. 

It makes an impression of the fan control transistor's high temperature, but with the fan cooling it down, its temperature will be notably lower. 

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Aris Mpitziopoulos
Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.
  • refillable
    Nice @Aris_Mp! I have a question though. Are the 550 W, 650 W, and the 750 W the same platform as this or are they different?
    Reply
  • Aris_Mp
    Thanks! The V750 uses the same platform. Have to check for the other two.
    Reply
  • refillable
    Aris_Mp said:
    Thanks! The V750 uses the same platform. Have to check for the other two.
    Oh, great then! Please do check because the lower wattages are already sold here in my country.
    Reply