
The MONTECH Century Mini 750W Gold is a 750W, SFX form factor, fully modular ATX power supply, featuring a single fan mode and is priced at around $98.90 USD from various online retailers.
Despite its affordability and SFX small form factor, our tests on two units revealed significant reliability issues; both units failed before the tests were completed. Each unit failed during different stages of the Brownout tests: the first unit failed during the 40°C Full Load test and did not restart, while the second failed during the 0°C Full Load test, tripping the on/off tester’s protection and emitting a strong smell, sparks, and smoke when attempting to power the unit back on.
Due to insufficient data from the second unit, several test results (excursion, OPP, 5Vsb and -12V rail OCP, 40C) are missing. Additionally, the product’s marketing lacked details such as the specific ATX version and consistent fan size specifications. Given these reliability issues, we cannot recommend the MONTECH Century Mini 750W Gold.
WHAT YOU NEED TO KNOW
THE GOOD
- Performance
Good load regulation on all the rails and throughout the whole range.
THE BAD
- On/Off Switch
It does not have an on/off switch at the back of the power supply. The power switch allows you to completely shut off the power supply without unplugging it.
- Cables/Connectors
The included webbed cables are quite stiff, making it difficult to handle when cable managing, especially in small form factor cases. It also does not have a 12VHPWR connector, limiting it to lower powered or slightly older GPU compatibility.
- Failed Testing
Testing was incomplete due to hardware failures. This happened with two different samples.
THE REST
- Overall
Labs does not recommend this PSU. Both units failed before completing the full test suite. As a result, we cannot ensure its performance under high loads or its potential impact on your computer.
The MONTECH Century Mini 750W Gold is a compact SFX form factor power supply, smaller in all dimensions compared to an ATX form factor. Though, it can be used in ATX-supported cases with the provided adapter bracket.
In the Box, it includes adequate accessories, with webbed construction cables that are regularly insulated but stiff, complicating cable management. Unlike most power supplies, it comes packaged in flimsy bubble wrap instead of sturdy foam. It includes velcro cable ties and a cable bag but lacks a 12VHPWR cable or connector, limiting the GPU compatibility to lower powered or slightly older models.
There are no physical switches on this power supply, making it impossible to turn on and off. The fan is inconsistently listed as both “90 mm” and “92 mm” on the MONTECH website, but testing confirmed it as a 92 mm fan with fluid dynamic bearing. On the MONTECH specifications webpage it specified that the Operating Temperature is 0°C to 45°C, though we cannot verify this through testing.
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Front of the box.
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Power input side of the PSU.

Top of the PSU displaying the fan.

Bottom of the PSU displaying the specifications.
+12 V | +5 V | +3.3 V | +5 Vsb | -12 V | |
---|---|---|---|---|---|
CURRENT | 62.5 A | 20 A | 20 A | 2.5 A | 0.3 A |
WATTAGE | 750 W | 120 W | 12.5 W | 3.6 W | |
750 W |
Please note that the above ratings are manufacturer advertised specifications.
The Century Mini 750W Gold operates with a single fan mode and has standard safety protections. While people expect their ATX power supplies to continue to operate after triggering the protections, technically the protections are only required to prevent any hazards people or equipment. In this case, the protections triggered and the power supply no longer operated; we did not detect any shock or fire hazards. There were sparks generated when we removed it from the test setup and applied power, but there was no fire within the enclosure.
The power supply is advertised with a 7-year warranty.
The Century Mini 750W Gold maintained a good voltage ripple for most of the load range for the 12V rail but showed higher values for the 5V and 3.3V rails. The 5Vsb rail went out of compliance with high loads, but this is a non-critical rail, so it is unlikely to impact performance or system reliability.
It demonstrated good load regulation, and if neither of the samples died, it would be noteworthy. All of the rails performed quite well.
Excursion tests were not conducted as the units failed before reaching this stage. These tests are required for ATX 3.0 or higher power supplies, and while this unit’s ATX version is not specified, conducting such tests is still relevant for modern systems.
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The Century Mini 750W Gold meets the requirements for the 80PLUS Gold rating. As for the brownout tests, while both units did die during this test segment, the successful parts of the test complied with all of the requirements and timings.
The 12V OCP was somewhat low in some cases, especially if using this unit with newer components. While the 5V and 3.3V rails were slightly high at 180%, though not alarmingly so.
