The Cooler Master V750 Gold V2 is the top-performing power supply in the 750W Gold category, earning an easy place in our best PSUs list. Other notable choices in this category are the Corsair RM750x, the EVGA SuperNOVA 750 G6, and the be quiet! Pure Power 11 FM 750, which we compare it to throughout this review.
We have already evaluated the Cooler Master V850 Gold V2, which managed to leave a positive impression on us. So, we are curious to see how its smaller sibling will do against the tough competition in the 750W category. This is enough power for a potent gaming system, as long as you don't highly overclock both your CPU and GPU. The OEM behind Cooler Master's Gold V2 line is Gospower, a not-so-well-known manufacturer which nonetheless managed to reach the performance levels of other more recognized OEMs within a short period.
The V750 Gold V2 uses a fully modular cable design, and it has compact enough dimensions, thanks to its 160mm depth. Sure, there are even 1000W PSUs available today with only 140mm depth, but this leads to over-populated PCBs where airflow has to be increased to deal with the heat loads effectively. And the higher the airflow, the more the output noise from the cooling fan. The V750 Gold V2 uses a fluid dynamic bearing fan driven by a relaxed speed profile.
Specifications
|
Manufacturer (OEM) |
Gospower |
|
Max. DC Output |
750W |
|
Efficiency |
80 PLUS Gold, Cybenetics Platinum (89-91%) |
|
Noise |
Cybenetics A- (25-30 dB[A]) |
|
Modular |
✓ (fully) |
|
Intel C6/C7 Power State Support |
✓ |
|
Operating Temperature (Continuous Full Load) |
0 - 50°C |
|
Over Voltage Protection |
✓ |
|
Under Voltage Protection |
✓ |
|
Over Power Protection |
✓ |
|
Over Current (+12V) Protection |
✓ |
|
Over Temperature Protection |
✓ |
|
Short Circuit Protection |
✓ |
|
Surge Protection |
✓ |
|
Inrush Current Protection |
✓ |
|
Fan Failure Protection |
✗ |
|
No Load Operation |
✓ |
|
Cooling |
135mm Fluid Dynamic Bearing Fan (HA13525M12F-Z) |
|
Semi-Passive Operation |
✓ (selectable) |
|
Dimensions (W x H x D) |
150 x 85 x 160mm |
|
Weight |
1.63 kg (3.59 lb) |
|
Form Factor |
ATX12V v2.52, EPS 2.92 |
|
Warranty |
10 Years |
Power Specifications
| Rail | 3.3V | 5V | 12V | 5VSB | -12V |
| Max. Power | Amps | 20 | 20 | 62.5 | 3 |
| Watts | 120 | 750 | 15 | 3.6 | |
| Total Max. Power (W) | 750 |
Cables & Connectors
| Description | Cable Count | Connector Count (Total) | Gauge | In Cable Capacitors |
|---|---|---|---|---|
| ATX connector 20+4 pin (650mm) | 1 | 1 | 18-22AWG | No |
| 8 pin EPS12V (650mm) | 1 | 1 | 18AWG | No |
| 4+4 pin EPS12V (650mm) | 1 | 1 | 18AWG | No |
| 6+2 pin PCIe (550mm+120mm) | 2 | 4 | 16-18AWG | No |
| SATA (500mm+115mm+115mm+115mm) | 3 | 12 | 18AWG | No |
| 4-pin Molex (500mm+120mm+120mm+120mm) | 1 | 4 | 18AWG | No |
| AC Power Cord (1370mm) - C13 coupler | 1 | 1 | 18AWG | - |
Two EPS and four PCIe are enough for a 750W power supply. The number of SATA connectors is high, and most users will be satisfied with the four 4-pin Molex connectors. There is no FDD adapter provided, but there is no need for one here.
This PSU's cable length is adequate, but we would like to see more distance between the peripheral connectors, especially the 4-pin ones. If the parts you want to power are close to each other, the longer distance between peripheral connectors won't be a major headache, but this is not the case when the parts are far from each other, and the connectors cannot reach them.
Component Analysis
If you're not familiar with power supply vocabulary, we strongly encourage you to read our PSUs 101 article alongside this review. This article provides valuable information about PSUs and their operation, allowing you to better understand the components we're about to discuss.
| General Data | - |
| Manufacturer (OEM) | Gospower |
| PCB Type | Double Sided |
| Primary Side | - |
| Transient Filter | 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV, 1x MPS HF81 (Discharge IC) |
| Inrush Protection | NTC Thermistor 8D-15 (8 Ohm) & Relay |
| Bridge Rectifier(s) |
2x GBU3008 (800V, 30A @ 90°C) |
| APFC MOSFETs |
2x STMicroelectronics STF33N60DM2 (600V, 15.5A @ 100°C, Rds(on): 0.13Ohm) |
| APFC Boost Diode |
1x |
| Bulk Cap(s) |
1x TK (450V, 560uF, 2,000h @ 105°C, LGW) |
| Main Switchers |
2x Sanrise Tech SRC60R140BTFE (600V, 11.2A @ 125°C, Rds(on): 0.14Ohm) |
| APFC Controller |
Champion CM6500UNX & CM03AX |
| Resonant Controller | Champion CU6901V |
| Topology |
Primary side: APFC, Half-Bridge & LLC converter |
| Secondary Side | - |
| +12V MOSFETs | 6x On Semiconductor NTMFS5C430NL (40V, 140A @ 100°C, Rds(on): 1.4mOhm) |
| 5V & 3.3V | DC-DC Converters: 6x IPS FTD05N03NA (30V, 75A @ 100°C, Rds(on): 6mOhm) PWM Controllers: ANPEC APW7159C |
| Filtering Capacitors |
Electrolytic: 2x Rubycon (6-10,000h @ 105°C, ZLH), 20x Rubycon (4-10,000h @ 105°C, YXJ), 3x Rubycon (4-10,000h @ 105°C, YXF) |
| Supervisor IC | IN1S313I-SAG |
| Fan Model | Hong Hua HA13525M12F-Z (135mm, 12V, 0.36A, Fluid Dynamic Bearing Fan) |
| 5VSB Circuit | - |
| Standby PWM Controller | On-Bright OB2365SP |
This is a modern design by Gospower. Gospower's engineers used lots of glue to keep the respective parts firmly in place to ensure there won't be any coil whine issues. Soldering quality is top-notch, especially from a lesser-known company, and the caps that Gospower used are just as good. The only parts that are not from a known brand are the main FETs, which still have good specs. All in all, this looks to be a solid platform, and our test sessions (spoiler) confirmed this.
The transient/EMI filter has all the required parts but only through EMC pre-compliance testing can we be sure that it effectively deals with EMI noise, incoming and outgoing. For surge protection, an MOV is used, and there is also a discharge IC to restrict energy losses. Finally, an NTC thermistor and relay combination deal with high inrush currents.
This is the first time we've found two 30A bridge rectifiers! This is, to be honest, huge overkill.
The APFC converter uses two STMicroelectronics STF33N60DM2 FETs and a single boost diode which we couldn't identify because it is covered in glue. The bulk cap is by TK, and it has enough capacity to offer more than 17ms, hold-up time. It would be nice to see a Japanese cap here, but it is hard to find parts this period, so most manufacturers use whatever they can find at reasonable prices.
The main FETs are by Sanrise Tech and are installed in a half-bridge topology.
Six FETs regulate the 12V rail. They are installed on a daughter-board, close to the main transformer. A small heatsink is used to cool them down. Another board hosts the DC-DC converters, which generate the minor rails.
The electrolytic caps are of high quality, belonging to Rubycon's good lines. Lots of polymer caps are also used for ripple filtering.
The standby PWM controller is an On-Bright OB2365SP.
Lots of electrolytic and polymer caps are installed on the face of the modular board.
Just look at that soldering quality! Gospower's manufacturing lines did a great job with this PSU.
Typically, this PSU uses a Hong Hua cooling fan. This manufacturer has been prevalent the last few years, offering good products for reasonable prices.
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To learn more about our PSU tests and methodology, please check out How We Test Power Supply Units.
Corsair RM750x (2021)
Seasonic FOCUS GX-750
XPG CORE Reactor 750W
Primary Rails And 5VSB Load Regulation
The following charts show the main rails' voltage values recorded between a range of 40W up to the PSU's maximum specified load, along with the deviation (in percent). Tight regulation is an important consideration every time we review a power supply because it facilitates constant voltage levels despite varying loads. Tight load regulation also, among other factors, improves the system’s stability, especially under overclocked conditions and, at the same time, applies less stress to the DC-DC converters that many system components utilize.
This PSU's load regulation is satisfactory on all rails, but would be ideal if it were within 1% at 12V.
Hold-Up Time
Put simply; hold-up time is the amount of time that the system can continue to run without shutting down or rebooting during a power interruption.
The hold-up time is pretty long here, despite the not so large bulk capacitor.
Inrush Current
Inrush current, or switch-on surge, refers to the maximum, instantaneous input current drawn by an electrical device when it is first turned on. A large enough inrush current can cause circuit breakers and fuses to trip. It can also damage switches, relays, and bridge rectifiers. As a result, the lower the inrush current of a PSU right as it is turned on, the better.
Inrush currents are low on this device, thanks to the large NTC thermistor.
Leakage Current
In layman's terms, leakage current is the unwanted transfer of energy from one circuit to another. In power supplies, it is what happens when the current flows from the primary side to the ground or the chassis, which in the majority of cases is connected to the ground. For measuring leakage current, we use a GW Instek GPT-9904 electrical safety tester instrument.
Our leakage current test is conducted at 110% of the DUT's rated voltage input (so for a 230-240V device, we conduct the test with 253-264V input). The maximum acceptable limit of a leakage current is 3.5 mA (as defined by the IEC-60950-1 regulation), ensuring that the current is low and will not harm any person coming in contact with the power supply's chassis.
Leakage current here is lower than any of the competition we tested this PSU against.
10-110% Load Tests
These tests reveal the PSU's load regulation and efficiency levels under high ambient temperatures. They also show how the fan speed profile behaves under increased operating temperatures.
| Test # | 12V | 5V | 3.3V | 5VSB | DC/AC (Watts) | Efficiency | Fan Speed (RPM) | PSU Noise (dB[A]) | Temps (In/Out) | PF/AC Volts |
| 1 | 4.327A | 1.961A | 1.992A | 1.006A | 74.949 | 86.517% | 0 | <6.0 | 45.63°C | 0.945 |
| 12.329V | 5.102V | 3.311V | 4.971V | 86.629 | 40.20°C | 115.15V | ||||
| 2 | 9.687A | 3.066A | 2.992A | 1.209A | 150.003 | 90.803% | 0 | <6.0 | 46.87°C | 0.961 |
| 12.292V | 4.903V | 3.308V | 4.963V | 165.196 | 40.86°C | 115.15V | ||||
| 3 | 15.387A | 3.620A | 3.494A | 1.412A | 224.998 | 92.179% | 0 | <6.0 | 47.95°C | 0.973 |
| 12.276V | 4.850V | 3.306V | 4.956V | 244.087 | 41.30°C | 115.15V | ||||
| 4 | 21.103A | 3.910A | 3.995A | 1.617A | 300.000 | 92.299% | 0 | <6.0 | 48.87°C | 0.980 |
| 12.263V | 5.118V | 3.304V | 4.949V | 325.030 | 41.82°C | 115.14V | ||||
| 5 | 26.451A | 4.897A | 5.001A | 1.821A | 374.349 | 91.861% | 770 | 27.8 | 42.56°C | 0.979 |
| 12.243V | 5.106V | 3.301V | 4.941V | 407.519 | 50.13°C | 115.14V | ||||
| 6 | 31.850A | 5.899A | 6.004A | 2.000A | 449.146 | 91.518% | 818 | 29.6 | 43.03°C | 0.980 |
| 12.228V | 5.088V | 3.298V | 4.934V | 490.773 | 51.29°C | 115.14V | ||||
| 7 | 37.285A | 6.880A | 7.010A | 2.233A | 524.591 | 91.034% | 899 | 31.2 | 43.82°C | 0.983 |
| 12.216V | 5.089V | 3.296V | 4.926V | 576.257 | 52.48°C | 115.14V | ||||
| 8 | 42.736A | 7.867A | 8.012A | 2.440A | 599.911 | 90.440% | 977 | 34.0 | 44.37°C | 0.986 |
| 12.203V | 5.086V | 3.294V | 4.918V | 663.323 | 53.36°C | 115.14V | ||||
| 9 | 48.554A | 8.360A | 8.504A | 2.442A | 674.400 | 89.915% | 1052 | 34.9 | 44.68°C | 0.988 |
| 12.191V | 5.082V | 3.292V | 4.913V | 750.039 | 54.15°C | 115.14V | ||||
| 10 | 54.199A | 8.901A | 9.026A | 3.061A | 749.565 | 89.258% | 1077 | 36.0 | 45.21°C | 0.990 |
| 12.175V | 5.056V | 3.289V | 4.901V | 839.769 | 55.42°C | 115.13V | ||||
| 11 | 60.432A | 8.877A | 9.030A | 3.062A | 824.723 | 88.603% | 1127 | 37.2 | 46.64°C | 0.991 |
| 12.163V | 5.069V | 3.288V | 4.899V | 930.805 | 57.30°C | 115.12V | ||||
| CL1 | 0.121A | 14.000A | 13.997A | 0.000A | 119.331 | 83.995% | 0 | <6.0 | 50.21°C | 0.959 |
| 12.306V | 5.109V | 3.309V | 4.967V | 142.070 | 42.84°C | 115.15V | ||||
| CL2 | 62.488A | 1.001A | 0.999A | 1.000A | 774.732 | 89.579% | 1142 | 37.3 | 45.31°C | 0.990 |
| 12.185V | 5.090V | 3.293V | 4.931V | 864.859 | 55.55°C | 115.12V |
The PSU manages to keep high-efficiency levels even under increased operating temperatures. The APFC readings should be a bit higher, though.
20-80W Load Tests
In the following tests, we measure the PSU's efficiency at loads significantly lower than 10% of its maximum capacity (the lowest load the 80 PLUS standard measures). This is important for representing when a PC is idle with power-saving features turned on.
| Test # | 12V | 5V | 3.3V | 5VSB | DC/AC (Watts) | Efficiency | Fan Speed (RPM) | PSU Noise (dB[A]) | PF/AC Volts |
| 1 | 1.211A | 0.486A | 0.497A | 0.200A | 19.971 | 77.320% | 0 | <6.0 | 0.889 |
| 12.242V | 5.147V | 3.314V | 4.986V | 25.829 | 115.14V | ||||
| 2 | 2.407A | 0.971A | 0.996A | 0.401A | 39.964 | 80.845% | 0 | <6.0 | 0.919 |
| 12.328V | 5.143V | 3.312V | 4.981V | 49.433 | 115.14V | ||||
| 3 | 3.614A | 1.459A | 1.493A | 0.603A | 59.997 | 84.384% | 0 | <6.0 | 0.937 |
| 12.328V | 5.140V | 3.311V | 4.977V | 71.100 | 115.14V | ||||
| 4 | 4.816A | 1.946A | 1.992A | 0.804A | 79.949 | 87.051% | 0 | <6.0 | 0.949 |
| 12.325V | 5.138V | 3.311V | 4.973V | 91.842 | 115.14V |
The efficiency levels are sky high here, so your fan won't need to spin when the PSU is under light loads.
2% or 10W Load Test
From July 2020, the ATX spec began requiring 70% and higher efficiency at 115V input. The applied load for our test is only 10W for PSUs with 500W and lower capacities, while for stronger units, we dial 2% of their max-rated capacity.
| Test # | 12V | 5V | 3.3V | 5VSB | DC/AC (Watts) | Efficiency | Fan Speed (RPM) | PSU Noise (dB[A]) | PF/AC Volts |
| 1 | 1.063A | 0.244A | 0.246A | 0.051A | 15.321 | 73.627% | 0 | <6.0 | 0.891 |
| 12.226V | 5.145V | 3.313V | 4.990V | 20.809 | 115.12V |
The 70% mark is easy for this platform, with 2% load.
Efficiency & Power Factor
We plotted a chart showing the PSU's efficiency at low loads and loads from 10 to 110% of its maximum rated capacity. The higher a PSU’s efficiency, the less energy goes wasted, leading to a reduced carbon footprint and lower electricity bills. The same goes for Power Factor.
This is a highly efficient platform, which explains why it achieved a Platinum rating in the Cybenetics scale.
5VSB Efficiency
| Test # | 5VSB | DC/AC (Watts) | Efficiency | PF/AC Volts |
| 1 | 0.100A | 0.499 | 76.769% | 0.188 |
| 4.989V | 0.650 | 115.15V | ||
| 2 | 0.250A | 1.246 | 81.491% | 0.417 |
| 4.988V | 1.529 | 115.15V | ||
| 3 | 0.550A | 2.741 | 82.785% | 0.466 |
| 4.984V | 3.311 | 115.16V | ||
| 4 | 1.000A | 4.978 | 82.581% | 0.505 |
| 4.978V | 6.028 | 115.16V | ||
| 5 | 1.500A | 7.458 | 82.464% | 0.529 |
| 4.972V | 9.044 | 115.16V | ||
| 6 | 2.999A | 14.858 | 81.050% | 0.560 |
| 4.954V | 18.332 | 115.16V |
Gospower used a highly efficient 5VSB rail in this platform, which puts to shame the respective circuits of other, similar spec, PSUs.
Power Consumption In Idle And Standby
| Mode | 12V | 5V | 3.3V | 5VSB | Watts | PF/AC Volts |
| Idle | 12.216V | 5.146V | 3.312V | 4.992V | 4.001 | 0.646 |
| 115.1V | ||||||
| Standby | 0.040 | 0.239 | ||||
| 115.1V |
Vampire power is low with both voltage inputs.
Fan RPM, Delta Temperature, And Output Noise
All results are obtained between an ambient temperature of 37 to 47 degrees Celsius (98.6 to 116.6 degrees Fahrenheit).
The fan speed profile is relaxed even under stressful conditions. The highly efficient platform helps with this, since it keeps thermal loads low.
The following results were obtained at 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit) ambient temperature.
At normal operating temperatures, close to 30 degrees Celsius, the PSU will be dead silent with up to 300W loads, and you will barely hear its fan spinning at up to 475W. It exceeds 30 dBA at loads that are more than 550W, but it doesn't go above 35 dBA in any case.
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Protection Features
Check out our PSUs 101 article to learn more about PSU protection features.
|
OCP (Cold @ 26°C) |
12V: 78.4A (125.44%), 12.123V |
|
OCP (Hot @ 34°C) |
12V: 78A (124.8%), 12.129V |
|
OPP (Cold @ 27°C) |
963.53W (128.47%) |
|
OPP (Hot @ 41°C) |
959.13W (127.88%) |
|
OTP |
✓ (125°C @ 12V Heat Sink) |
|
SCP |
12V to Earth: ✓ |
|
PWR_OK |
Proper operation |
|
NLO |
✓ |
|
SIP |
Surge: MOV |
A PSU's OCP triggering points are ideally set at 12V and the minor rails under hot and cold conditions. The same goes for OPP. OTP's setting looks a bit low, but we didn't encounter any problems during our extremely tough test sessions, so that you won't have a problem, either.
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.
No problems here, since the 3.3V rail is always lower than the other two.
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
Efficiency Graph
Ripple Graphs
The lower a power supply's ripple, the more stable the overall system will be and less stress will be applied to its components.
Infrared Images
To take these 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 Fluke Ti480 PRO camera able to deliver an IR resolution of 640x480 (307,200 pixels).
The hottest parts on this PSU are the boards that hold the 12V FETs and the DC-DC converters that generate the minor rails. There is a heat sink above the 12V board to help cool down the FETs, which does an admirable job here.
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Advanced Transient Response Tests
For details about our transient response testing, please click here.
In the real world, power supplies are always working with loads that change. It's of immense importance, then, for a PSU to keep its rails within the ATX specification's defined ranges. The smaller the deviations, the more stable your PC will be and the less stress will be applied to its components.
We should note that the ATX spec requires capacitive loading during the transient rests, but in our methodology, we also choose to apply a worst case scenario with no additional capacitance on the rails.
Advanced Transient Response at 20% – 20ms
| Voltage | Before | After | Change | Pass/Fail |
|---|---|---|---|---|
| 12V | 12.267V | 12.128V | 1.13% | Pass |
| 5V | 5.127V | 5.068V | 1.15% | Pass |
| 3.3V | 3.307V | 3.180V | 3.84% | Pass |
| 5VSB | 4.966V | 4.903V | 1.27% | Pass |
Advanced Transient Response at 20% – 10ms
| Voltage | Before | After | Change | Pass/Fail |
|---|---|---|---|---|
| 12V | 12.266V | 12.131V | 1.10% | Pass |
| 5V | 5.128V | 5.071V | 1.11% | Pass |
| 3.3V | 3.307V | 3.183V | 3.75% | Pass |
| 5VSB | 4.966V | 4.900V | 1.33% | Pass |
Advanced Transient Response at 20% – 1ms
| Voltage | Before | After | Change | Pass/Fail |
|---|---|---|---|---|
| 12V | 12.270V | 12.106V | 1.34% | Pass |
| 5V | 5.128V | 5.047V | 1.58% | Pass |
| 3.3V | 3.307V | 3.197V | 3.33% | Pass |
| 5VSB | 4.966V | 4.914V | 1.05% | Pass |
Advanced Transient Response at 50% – 20ms
| Voltage | Before | After | Change | Pass/Fail |
|---|---|---|---|---|
| 12V | 12.218V | 12.097V | 0.99% | Pass |
| 5V | 5.088V | 5.022V | 1.30% | Pass |
| 3.3V | 3.299V | 3.169V | 3.94% | Pass |
| 5VSB | 4.945V | 4.884V | 1.23% | Pass |
Advanced Transient Response at 50% – 10ms
| Voltage | Before | After | Change | Pass/Fail |
|---|---|---|---|---|
| 12V | 12.223V | 12.099V | 1.01% | Pass |
| 5V | 5.107V | 5.048V | 1.16% | Pass |
| 3.3V | 3.300V | 3.169V | 3.97% | Pass |
| 5VSB | 4.945V | 4.882V | 1.27% | Pass |
| Voltage | Before | After | Change | Pass/Fail |
|---|---|---|---|---|
| 12V | 12.218V | 12.097V | 0.99% | Pass |
| 5V | 5.088V | 5.022V | 1.30% | Pass |
| 3.3V | 3.299V | 3.169V | 3.94% | Pass |
| 5VSB | 4.945V | 4.884V | 1.23% | Pass |
Advanced Transient Response at 50% – 1ms
| Voltage | Before | After | Change | Pass/Fail |
|---|---|---|---|---|
| 12V | 12.225V | 12.103V | 1.00% | Pass |
| 5V | 5.108V | 5.055V | 1.04% | Pass |
| 3.3V | 3.300V | 3.176V | 3.76% | Pass |
| 5VSB | 4.945V | 4.881V | 1.29% | Pass |
Transient response on this PSU is tight at 12V and 5V. While it's good enough at 3.3V, we would like to see a less than 3% deviation in this rail.
Turn-On Transient Tests
In the next set of tests, we measured the PSU's response in simpler transient load scenarios—during its power-on phase. Ideally, we don't want to see any voltage overshoots or spikes since those put a lot of stress on the DC-DC converters of installed components.
The turn-on transient results are perfectly acceptable here. Voltage levels on both rails ramp up smoothly, without any steps, voltage drops, or spikes.
Power Supply Timing Tests
There are several signals generated by a power supply, which need to be within specified (by the ATX spec) ranges. If they are not, there can be compatibility issues with other system parts, especially mainboards. A PSU's Power-on time (T1) has to be lower than 150ms and the PWR_OK delay (T3) has be within 100 to 150ms, so that it can be compatible with the Alternative Sleep Mode.
| T1 (Power-on time) & T3 (PWR_OK delay) | ||
|---|---|---|
| Load | T1 | T3 |
| 20% | 54ms | 127ms |
| 100% | 54ms | 127ms |
PSU Timing Charts
The Cooler Mast V750 Gold V2's PWR_OK delay is within the 100-150ms region, so the PSU supports the alternative sleep mode recommended by the ATX spec.
Ripple Measurements
Ripple represents the AC fluctuations (periodic) and noise (random) found in a PSU's DC rails. This phenomenon significantly decreases a PSU capacitors' lifespan because it causes them to run hotter. A 10-degree Celsius increase can cut into a cap's useful life by 50%. Ripple also plays an important role in overall system stability, especially when overclocking is involved.
The ripple limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V, and 5VSB).
| Test | 12V | 5V | 3.3V | 5VSB | Pass/Fail |
| 10% Load | 7.3 mV | 5.9 mV | 6.9 mV | 10.8 mV | Pass |
| 20% Load | 10.0 mV | 5.8 mV | 6.4 mV | 5.3 mV | Pass |
| 30% Load | 12.0 mV | 6.8 mV | 7.4 mV | 7.3 mV | Pass |
| 40% Load | 8.2 mV | 6.1 mV | 6.5 mV | 6.8 mV | Pass |
| 50% Load | 8.2 mV | 6.7 mV | 6.9 mV | 6.8 mV | Pass |
| 60% Load | 7.8 mV | 7.1 mV | 7.1 mV | 7.4 mV | Pass |
| 70% Load | 13.3 mV | 8.9 mV | 9.2 mV | 9.2 mV | Pass |
| 80% Load | 9.1 mV | 7.9 mV | 9.4 mV | 8.4 mV | Pass |
| 90% Load | 13.7 mV | 9.3 mV | 11.1 mV | 10.2 mV | Pass |
| 100% Load | 13.9 mV | 10.4 mV | 12.0 mV | 12.8 mV | Pass |
| 110% Load | 14.4 mV | 10.7 mV | 12.2 mV | 12.5 mV | Pass |
| Crossload 1 | 15.1 mV | 8.7 mV | 11.0 mV | 6.1 mV | Pass |
| Crossload 2 | 13.5 mV | 8.7 mV | 9.1 mV | 6.6 mV | Pass |
This PSU's ripple suppression is great on all rails.
Ripple At Full Load
Ripple At 110% Load
Ripple At Cross-Load 1
Ripple At Cross-Load 2
EMC Pre-Compliance Testing – Average & Quasi-Peak EMI Detector Results
Electromagnetic Compatibility (EMC) is the ability of a device to operate properly in its environment without disrupting the proper operation of other nearby devices.
Electromagnetic Interference (EMI) stands for the electromagnetic energy a device emits, and it can cause problems in other nearby devices if too high. For example, it can be the cause of increased static noise in your headphones or/and speakers.
EMI emissions were low with both detectors we used (Average and Peak).
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Performance Rating
Sky-high overall performance for the V750 Gold V2, which takes the lead from the competition.
Noise Rating
The graph below depicts the cooling fan's average noise over the PSU's operating range, with an ambient temperature between 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit).
The average noise output is low. Only the be quiet! offering performs better in this regard.
Efficiency Rating
The following graph shows this PSU's average efficiency throughout its operating range with an ambient temperature close to 30 degrees Celsius.
The average efficiency is notably higher than the rest of the Gold (in 80 PLUS) units we tested it against.
Power Factor Rating
The following graphs show the PSU's average power factor reading throughout its operating range, with an ambient temperature close to 30 degrees Celsius and 115V/230V voltage input.
The APFC converter's performance is not bad here, but it needs tuning for higher PF readings, mostly with 115V input.
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The Cooler Master V750 Gold V2 is an impressive product from an OEM that is not widely known. Actually, only Cooler Master has used this OEM, Gospower, so far. The overall performance that the V750 achieves is top of the line, managing to surpass tough opponents like the new Corsair RM750x and the EVGA SuperNOVA 750 G6. It is the first time in many years that we've seen a Cooler Master PSU topping our charts, which means that Cooler Master's power team is on the right track again. There are very few things that we would like to see improved in this product: slightly tighter load regulation at 12V, fine-tuning of the APFC converter for better performance with 115V, and a larger distance between the peripheral connectors. On the contrary, the pros list for this power supply is huge.
The V750 Gold V2 is sold at a fair price, and its overall performance score topped our respective charts. Moreover, it has the same warranty period as the competition, providing you a long peace of mind. Notable alternative options to this great product are the Corsair RM750x (2021), the EVGA SuperNOVA 750 G6 which uses an updated Seasonic Focus Gold platform, and the be quiet! Pure Power 11 FM that uses a custom-tailored CWT platform. The competition is tough in the 750W Gold category, but this is good for consumers.
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Disclaimer: Aris Mpitziopoulos is Tom's Hardware's PSU reviewer. He is also the Chief Testing Engineer of Cybenetics and developed the Cybenetics certification methodologies apart from his role on Tom's Hardware. Neither Tom's Hardware nor its parent company, Future PLC, are financially involved with Cybenetics. Aris does not perform the actual certifications for Cybenetics.
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Cooler Master V750 Gold V2 Power Supply Review - Tom's Hardware
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