• Home
  • Blog
  • Review of the Cooler Master V850 Gold i Multi power supply with a 12VHPWR connector and operation control via proprietary MasterPlus+ software

Review of the Cooler Master V850 Gold i Multi power supply with a 12VHPWR connector and operation control via proprietary MasterPlus+ software

15.11.2023 11:09

Cooler Master has announced a new line of V Gold i power supplies, including four models with power from 550 to 850 W. The entire range is available in black only, is 80Plus Gold certified and uses Japanese wet capacitors. One of the available models for testing was the Cooler Master V850 Gold i Multi.

The design of the power supply looks organic, but the use of a stamped grille with a trapezoidal pattern above the fan can increase operating noise and contribute to the accumulation of dust. At this point, stamped grilles are becoming more popular, likely due to their easier production and slight reduction in power supply cost.

The built-in cooling system operates as standard — with a constantly rotating fan. However, this model supports control via proprietary MasterPlus+ software, allowing you to configure the fan operating mode. To do this, the power supply is equipped with a cable with a USB interface, which must be connected to the corresponding connector on the computer motherboard.

The size of the power supply case is about 160 mm, and for comfortable installation it is recommended to take into account an additional 15-20 mm for wiring, providing a total length of about 180 mm.

The power supply is supplied in a box decorated in Cooler Master's signature colors.

The power supply is supplied in a box decorated in Cooler Master's signature colors.

Control via MasterPlus+ software

MasterPlus+ software is designed to control equipment from the Cooler Master ecosystem. The package is distributed in a ZIP archive.

All compatible devices (including power supplies and backlight controllers) are connected to the internal USB ports on the motherboard using the special cable included.

In our case, the power supply does not have any backlighting, so the only available software function is to control the fan operating mode. MasterPlus+ also demonstrates some power supply parameters in real time (more precisely, close to real time).

As the fan operating mode, you can select one of four ready-made profiles or a customizable fifth one. By default, the standard mode is selected, in which several stages are provided depending on the current load, but the fan is not stopped. The essence of these modes is perfectly illustrated by screenshots, but the general meaning is clear from the name (Gaming — enhanced cooling, Overclock — maximum cooling). Only in Silent mode is it possible to stop the fan, but, of course, not at maximum load, but only up to 50% (roughly, up to 400 W).

You can configure parameters only in one mode, which is called Customize. This mode has a reset button to default settings, which is convenient. In this mode, you can also configure operation with the fan stopped.

When testing the Cooler Master V850 Gold i Multi, we mainly used the standard operating mode, and to explore the hybrid mode, the Silent mode was activated.

Characteristics

All necessary parameters are indicated on the power supply case in full; for the +12VDC bus power the stated value is 849.6 W. The ratio of power on the +12VDC bus to total power is almost 100%, which, of course, is an excellent indicator.

Connector nameNumber of connectorsNotes
24 pin Main Power Connector1collapsible
4 pin 12V Power Connector 
8 pin SSI Processor Connector2collapsible
6 pin PCIe 1.0 VGA Power Connector 
8 pin PCIe 2.0 VGA Power Connector3on 3 cords
16 pin PCIe 5.0 VGA Power Connector1 
4 pin Peripheral Connector4ergonomic
15 pin Serial ATA Connector12on 3 cords
4 pin Floppy Drive Connector 

Length of wires to power connectors

Without exception, all wires are modular, that is, they can be removed, leaving only those that are necessary for a particular system.

  • 1 cord: to the main ATX connector — 65 cm
  • 2 cords: to the 8 pin SSI processor socket — 65 cm
  • 3 cords: to the video card power connector PCIe 2.0 VGA Power Connector — 55 cm
  • 1 cord: to the video card power connector PCIe 5.0 VGA Power Connector — 65 cm
  • 3 cords: to the first SATA Power Connector — 50 cm, plus 12 cm to the second, another 12 cm to the third and another 12 cm to the fourth same connector
  • 1 cord: to the first Peripheral Connector (Molex) — 40 cm, plus 12 cm to the second, another 12 cm to the third and another 12 cm to the fourth similar connector

The length of the wires to the connectors is designed for installation of the power supply in large and tall cases, including Full tower, and on open stands.

The distribution of SATA Power connectors along the power cords is quite good, allowing you to fully provide power to components in several zones, even with a large number of installed devices. Moreover, difficulties are unlikely in the case of a standard system. The only note: almost all SATA Power connectors are angled (with the exception of the outer ones on each cord), and the use of such connectors is not very convenient in the case of drives placed on the back side of the motherboard base.

On the positive side, it is worth noting the use of ribbon wires to the connectors, with the exception of the cord to the 12VHPWR connector (it is nylon braided), which increases ease of assembly and further operation.

Circuit design and cooling

The power supply is equipped with an active power factor correction and has a fairly wide range of supply voltages from 100 to 240 volts. This ensures resistance to voltage drops in the electrical network below standard values.

The design of the power supply is fully consistent with modern trends: active power factor correction, synchronous rectifier for the +12VDC channel, independent pulsed DC converters for the +3.3VDC and +5VDC lines.

The power supply was manufactured at Chicony Power production facilities.

The semiconductor elements of the power factor corrector circuit and the main converter are located on the radiator. The elements of the synchronous rectifier are placed on the front side of the printed circuit board using the surface mounting method, with a radiator installed on top of them. The design is quite well thought out in terms of cooling the internal components.

Independent sources of +3.3VDC and 5VDC are installed on the daughter printed circuit board and, traditionally, do not have additional heat sinks — this is quite typical for power supplies with active cooling.

In low-voltage circuits, capacitors are predominantly Nichicon, Nippon Chemi-Con and Rubycon, that is, all capacitors are of Japanese origin. There are also a large number of polymer capacitors installed here.

The power supply contains a YY14025M12B fan of size 135 mm (120 mm between the centers of the mounting holes), based on a hydrodynamic bearing. The fan was manufactured by Yongyihao Electronic, the connection is detachable, two-wire.

Electrical Characteristics Measurement

Next, we move on to an instrumental study of the electrical characteristics of the power source using a multifunctional stand and other equipment.

The deviation of the output voltages from the nominal value is color coded as follows:

Operating at maximum power

The first stage of testing is to operate the power supply at maximum power for a long time. Such a test allows you to confidently verify the functionality of the power supply.

Cross-load characteristic

The next stage of instrumental testing is the construction of a cross-load characteristic (CLC) and its presentation on a quarter-plane, limited by the maximum power on the 3.3&5 V bus on one side (along the ordinate) and the maximum power on the 12 V bus on the other (along the abscissa). At each point, the measured voltage value is indicated by a color marker depending on the deviation from the nominal value.

KNH allows us to determine what load level can be considered acceptable, especially on the +12VDC channel, for the tested instance. In this case, deviations of the effective voltage values from the nominal value via the +12VDC channel do not exceed 1% over the entire power range, which is an excellent result. With a typical power distribution across channels, deviations from the nominal do not exceed 1% for the +3.3VDC channel, 1% for the +5VDC channel and 1% for the +12VDC channel.

This power supply model is well suited for powerful modern systems due to the high practical load capacity of the +12VDC channel.

Load capacity

The following test is designed to determine the maximum power that can be supplied through the corresponding connectors with a normal voltage deviation of 3 or 5 percent from the nominal voltage.

In the case of a video card with a single power connector, the maximum power over the +12VDC channel is at least 150 W with a deviation within 3%.

In the case of a video card with a single power connector, the maximum power over the +12VDC channel is at least 150 W with a deviation within 3%.

In the case of a video card with two power connectors, when using two power cords, the maximum power over the +12VDC channel is at least 350 W with a deviation within 3%, which allows the use of very powerful video cards.

In the case of a video card with two power connectors, when using two power cords, the maximum power over the +12VDC channel is at least 350 W with a deviation within 3%, which allows the use of very powerful video cards.

When loaded through three PCIe 2.0 connectors, the maximum power over the +12VDC channel is at least 525 W with a deviation within 3%.

When loaded through three PCIe 2.0 connectors, the maximum power over the +12VDC channel is at least 525 W with a deviation within 3%.

When loaded through three PCIe 2.0 connectors, the maximum power over the +12VDC channel is at least 525 W with a deviation within 3%.

When loaded through three PCIe 2.0 connectors, the maximum power over the +12VDC channel is at least 525 W with a deviation within 3%.

When loaded through two processor power connectors, the maximum power via the +12VDC channel is about 490 W with a deviation within 3%.

When loaded through two processor power connectors, the maximum power via the +12VDC channel is about 490 W with a deviation within 3%.

In the case of a motherboard, the maximum power over the +12VDC channel is at least 150 W with a deviation of 3%. Since the board itself consumes within 10 W on this channel, high power may be required to power expansion cards — for example, for video cards without an additional power connector, which usually have a consumption within 75 W, however, it is unlikely that with this power supply they will someone will use it.

In the case of a motherboard, the maximum power over the +12VDC channel is at least 150 W with a deviation of 3%. Since the board itself consumes within 10 W on this channel, high power may be required to power expansion cards — for example, for video cards without an additional power connector, which usually have a consumption within 75 W, however, it is unlikely that with this power supply they will someone will use it.

Cost-effective and efficient

When assessing the efficiency of computer power supplies, there are two approaches. The first is to evaluate the power supply as a separate power converter, and then try to minimize the resistance of the power transmission line from the power supply to the load. However, this approach, by connecting all connectors, creates unequal conditions for different power supplies, which makes the results of little use in real conditions. The second method evaluates the efficiency of a power supply through power dissipation (the difference between input and output power), as well as energy consumption over a certain time at a constant load. This allows you to understand the differences in power consumption between different models and determine the economic benefits of using more efficient power sources.

Efficiency (coefficient of performance) is often used to represent the efficiency of a power supply, but for the average user this parameter is of little information. High efficiency does not directly affect the performance or noise of the power supply and often increases the retail price. On the other hand, assessing the efficiency of a power supply through power dissipation and energy consumption allows you to estimate the cost of using different power sources over a long time.

We decided to evaluate the efficiency of various power supplies with the same power and number of connectors in order to bring the measurement technique as close as possible to real-life conditions of use. This will allow you to evaluate the efficiency of different power supplies under the same conditions and make a more informed decision when choosing a power source for your computer.

Load through connectors12VDC, W5VDC, W3.3VDC, WTotal power, W
main ATX, processor (12 V), SATA55515
main ATX, processor (12 V), SATA80155100
main ATX, processor (12 V), SATA180155200
Main ATX, CPU (12V), 6-pin PCIe, SATA380155400
Main ATX, CPU (12V), 6-pin PCIe (1 cord with 2 connectors), SATA480155500
main ATX, processor (12 V), 6-pin PCIe (2 cords per 1 connector), SATA480155500
Main ATX, CPU (12 V), 6-pin PCIe (2 cords x 2 connectors), SATA730155750

The results obtained look like this:

Power dissipation, W15 W100 W200 W400 W500 W
(1 cord)
500 W
(2 cords)
750 W
Cooler Master MWE Bronze 750W V215.922.725.943.058.556.2102.0
Cougar BXM 70012.018.226.042.857.457.1 
Cooler Master Elite 600 V411.417.830.165.793.0  
Cougar GEX 85011.814.520.632.641.040.572.5
Cooler Master V1000 Platinum (2020)19.821.025.538.043.541.055.3
Cooler Master V650 SFX7.813.819.633.042.441.4 
Chieftec BDF-650C13.019.027.635.569.867.3 
XPG Core Reactor 7508.014.318.530.741.840.472.5
Deepcool DQ650-M-V2L11.013.819.534.744.0  
Deepcool DA600-M13.619.830.061.386.0  
Fractal Design Ion Gold 85014.917.521.537.247.445.280.2
XPG Pylon 75011.115.421.741.057.056.7111.0
Thermaltake TF1 155013.815.117.024.2 30.042.0
Chieftronic PowerUp GPX-850FC12.815.921.433.239.438.269.3
Thermaltake GF1 100015.218.121.531.538.037.365.0
MSI MPG A750GF11.515.721.030.639.238.069.0
Chieftronic PowerPlay GPU-850FC12.015.919.728.134.033.356.0
Cooler Master MWE Gold 750W V212.216.021.034.642.041.676.4
XPG Pylon 45012.618.528.463.0   
Chieftronic PowerUp GPX-550FC12.215.421.635.7 47.1 
Chieftec BBS-500S13.316.322.238.6   
Cougar VTE X2 60013.318.328.049.364.2  
Thermaltake GX1 50012.814.119.534.847.6  
Thermaltake BM2 45012.216.726.357.9   
Chieftec PPS-1050FC10.813.017.429.135.134.658.0
Super Flower SF-750P14XE14.016.523.035.042.044.076.0
XPG Core Reactor 8509.814.918.129.038.437.063.0
Asus TUF Gaming 750B11.113.820.738.650.749.393.0
Deepcool PQ1000M10.412.616.728.1 34.4 
Chieftronic BDK-650FC12.614.320.441.153.550.6 
Cooler Master XG Plus 750 Platinum13.814.218.936.543.040.061.1
Chieftec GPC-700S15.621.430.963.584.0  
Gigabyte UD1000GM PG511.014.419.931.440.137.866.6
Zalman ZM700-TXIIv212.519.530.862.083.080.0 
Cooler Master V850 Platinum17.820.124.634.538.337.858.5
Thermaltake PF1 1200 Platinum12.818.324.035.043.039.567.2
XPG CyberCore 1000 Platinum10.119.621.633.937.436.757.7
Chieftec CSN-650C10.712.517.532.0 43.5 
Asus ROG Loki SFX-L 1000W Platinum13.714.517.624.9 38.7 
Thermaltake GF3 10008.817.021.735.544.841.670.5
Chieftronic PowerPlay GPU-1200FC13.817.922.231.636.033.255.5
Galax Hall of Fame GH130012.714.218.224.7 29.9 
Deepcool PX1200G10.719.524.230.0 35.0 
Powerman PM-300TFX12.020.038.2    
Chieftec Polaris Pro 1300W13.216.920.328.232.631.948.0
Chieftec GPA-700S13.419.330.364.186.5  
XPG Probe 600W12.819.629.558.080.0  
Afox 1200W Gold15.318.823.832.539.237.956.0
XPG Fusion 1600 Titanium14.020.223.125.5 28.964.5
Super Flower Leadex VII XG 850W11.714.518.426.7 32.2 
Cooler Master V850 Gold i Multi10.814.619.832.0 37.0 

This model has relatively high efficiency in all tested modes; it is a quite typical representative of power supplies with the 80Plus Gold certificate level.

In terms of overall efficiency at low and medium power, this model occupies a fairly high place in the overall list.

Computer energy consumption per year, kWh15 W100 W200 W400 W500 W
(1 cord)
500 W
(2 cords)
750 W
Cooler Master MWE Bronze 750W V2271107519793881489348727464
Cougar BXM 70023710351980387948834880 
Cooler Master Elite 600 V42311032201640805195  
Cougar GEX 850235100319333790473947357205
Cooler Master V1000 Platinum (2020)305106019753837476147397054
Cooler Master V650 SFX2009971924379347514743 
Chieftec BDF-650C24510421994381549914970 
XPG Core Reactor 750202100119143773474647347205
Deepcool DQ650-M-V2L228997192338084765  
Deepcool DA600-M2511049201540415133  
Fractal Design Ion Gold 850262102919403830479547767273
XPG Pylon 750229101119423863487948777542
Thermaltake TF1 1550252100819013716 46436938
Chieftronic PowerUp GPX-850FC244101519403795472547157177
Thermaltake GF1 1000265103519403780471347077139
MSI MPG A750GF232101419363772472347137174
Chieftronic PowerPlay GPU-850FC237101519253750467846727061
Cooler Master MWE Gold 750W V2238101619363807474847447239
XPG Pylon 450242103820014056   
Chieftronic PowerUp GPX-550FC238101119413817 4793 
Chieftec BBS-500S248101919473842   
Cougar VTE X2 6002481036199739364942  
Thermaltake GX1 5002441000192338094797  
Thermaltake BM2 450238102219824011   
Chieftec PPS-1050FC22699019043759468846837078
Super Flower SF-750P14XE254102119543811474847657236
XPG Core Reactor 850217100719113758471647047122
Asus TUF Gaming 750B22999719333842482448127385
Deepcool PQ1000M22398618983750 4681 
Chieftronic BDK-650FC24210011931386448494823 
Cooler Master XG Plus 750 Platinum252100019183824475747307105
Chieftec GPC-700S2681064202340605116  
Gigabyte UD1000GM PG5228100219263779473147117153
Zalman ZM700-TXIIv224110472022404751075081 
Cooler Master V850 Platinum287105219683806471647117083
Thermaltake PF1 1200 Platinum244103619623811475747267159
XPG CyberCore 1000 Platinum220104819413801470847027076
Chieftec CSN-650C22598619053784 4761 
Asus ROG Loki SFX-L 1000W Platinum251100319063722 4719 
Thermaltake GF3 1000209102519423815477247447188
Chieftronic PowerPlay GPU-1200FC252103319473781469546717056
Galax Hall of Fame GH1300243100019113720 4642 
Deepcool PX1200G225104719643767 4687 
Powerman PM-300TFX23710512087    
Chieftec Polaris Pro 1300W247102419303751466646596991
Chieftec GPA-700S2491045201740665138  
XPG Probe 600W2441048201040125081  
Afox 1200W Gold265104119613789472347127061
XPG Fusion 1600 Titanium254105319543727 46337135
Super Flower Leadex VII XG 850W234100319133738 4662 
Cooler Master V850 Gold i Multi226100419253784 4704 

Temperature

The thermal load when working with a constantly rotating fan is relatively low on the power supply, which, of course, should have a positive effect on its service life.

A study was carried out of the operation of the power supply in Silent mode, which is available through proprietary software and can be configured by the user.

During testing, it was found that the fan in the power supply is activated when two events occur: when a threshold power of 380 W is reached or a threshold temperature of about 80 degrees. Since this temperature is almost impossible to achieve under normal conditions, we used special methods to detect this temperature threshold. The fan turns off if the output power is below 380 W and the temperature does not exceed 72 degrees.

Passive mode also demonstrates acceptable thermal stability: the set temperature value is about 72 degrees with a load power of about 370 W.

Acoustic ergonomics

To measure the noise level of power supplies, we used a specific technique. The power supply was placed on a flat surface with the fan facing upwards. At a distance of 0.35 meters above the block, a measuring microphone of the Oktava 110A-Eco sound level meter was placed to measure the noise level. The load on the power supply was carried out through a special stand with a silent operating mode. The power supply operated at constant power for 20 minutes, after which the noise level was measured.

The selected distance to the noise source most closely corresponds to the conditions of a desktop installation of a system unit with an installed power supply. This measurement method allows you to evaluate the noise level of the power supply at a short distance from the source to the user. As the distance from the noise source increases and additional barriers appear that can effectively absorb sound, the noise level at the measurement location also decreases, which can improve acoustic comfort in general.

The noise level in this power supply in the power range up to 500 W is at a low level — less than 23 dBA from a distance of 0.35 meters when the fan is running constantly.

When increasing the output power to 750 W and 850 W, the noise level increases significantly to 59 dBA. This is a noisy level that may be unacceptable for both home and office use. But it is worth noting that this applies to the standard operation mode of the Standard fan. There are also other operating modes in proprietary software that can change the noise level.

In Silent mode, the power supply can operate at low loads (up to 370 W) with virtually no noise, since the fan usually does not rotate for a long time under these conditions.

In addition, the noise level from the power supply electronics is assessed. The difference in noise level during operation and in the standby state usually does not exceed 2 dBA, which indicates a very low noise level from the electronics.

Measurements are taken using a sound level meter microphone at a distance of approximately 40 mm from the top of the power supply to accurately assess the noise of electronic components.

Consumer qualities

Reviews of the Cooler Master V850 Gold i Multi power supply indicate its overall reliability and high quality, especially in the context of use in home computer systems. Basically, this power supply model showed excellent performance when working with typical components.

Noise when operating at maximum power can be a bit of a drawback, but the acoustic performance of the power supply up to and including 500 W is rated as excellent even without using hybrid mode.

It is important to note the high load capacity of the +12VDC channel, the quality of power supply for individual components and the relatively high efficiency of the power supply. No defects were found to significantly affect operation or efficiency during testing. The power supply is equipped with Japanese capacitors, which indicates its reliability, as well as a fan with a hydrodynamic bearing, which helps reduce noise and increase service life. The wires are also rated to be long enough for most uses, and the wires are completely removable, making them easy to install and connect.

Results

The Cooler Master V850 Gold i Multi model demonstrates excellent technical characteristics and reliable technical and operational qualities. Despite the high load capacity of the +12VDC channel, there is a limited number of power connectors for PCIe 2.0 video cards, which can create inconvenience when using systems with several high-performance video cards.

However, the power supply has a number of advantages, such as high efficiency, low thermal load, the use of a fan on a hydrodynamic bearing with a long service life and the use of Japanese capacitors, which guarantees reliable operation even under intensive use. It should also be noted that the power supply can operate at low power with the fan stopped.

An important feature is support for the ATX 3.0 standard and the presence of a slot for PCIe 5.0 video cards. Additionally, the power supply offers a hybrid mode of operation of the cooling system, which, although it requires inclusion in the proprietary software, allows you to configure the fan parameters. It is important to note that under loads corresponding to this mode, the noise, even with a constantly rotating fan, is practically inaudible.