The Segotep GM750 is a 750W fully modular ATX 3.0 power supply with a single fan mode, compatible with most systems at an MSRP of $99.99 USD. Despite its 750W power and 80PLUS Gold rating, it failed many test points and may struggle with high-end hardware, such as power-hungry GPUs. The single-fan mode provides efficient cooling.
WHAT YOU NEED TO KNOW
THE GOOD
- Cables
Comes with enough cables of decent quality.
THE BAD
- Performance
Poor line regulation, sensitivity to brownouts, may shut down during high loads.
- Warranty
Short 5-year warranty period, below average for similarly priced and rated power supplies.
- Price-to-Performance
Currently $99.99 USD MSRP on the Segotep US website. You can get better performance for the same price.
THE REST
- Overall
Not recommended because of its performance. For the price, there are better performing and future-proofed power supplies.
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The Segotep GM750 750W PSU includes various hardware features for performance and convenience. It features a 120 mm fan, typical for budget options, and has enough connections to power a CPU, an additional PCIe device, and several SATA devices.
The fan has a fluid-dynamic bearing, which is a bonus at this price point. While the 120 mm fan is sufficient for cooling, it may not be as powerful or quiet as a 140 mm fan.
The power ratings and specifications are standard, with 80PLUS Gold rating. We found that it barely meets the 87% (115 V) and 89% (230 V) efficiency requirements at 100% load, but it also exceeded the requirements at lower loads where the power supply will typically operate.
In the box, it includes standard items but lacks the accessories found with more expensive power supplies. The provided cables are average with regular rubberized insulation. The 24-pin testing connector is basic in build quality, though handy to have.
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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.
Side of the PSU displaying the specifications.
| +12 V | +5 V | +3.3 V | +5 Vsb | -12 V | |
|---|---|---|---|---|---|
| CURRENT | 62 A | 15 A | 16 A | 2.5 A | 0.3 A |
| WATTAGE | 744 W | 103 W | 12.5 W | 3.6 W | |
| 750 W | |||||
Please note that the above ratings are manufacturer advertised specifications.
The Segotep GM750 has no selectable modes, operating in a default single fan mode. It includes all standard protections, comparable to other power supplies in its class, but may experience occasional shutdowns during extremely high loads. The 5-year warranty is below average for this class of power supply.
- Fan Always Operating Mode: The fan is always spinning.
Performance-wise, the Segotep GM750 is below average for its class. Signal ripple noise was slightly high and failed at several test points, with noise levels slightly elevated for 12V, 5V, and 3.3V rails. The 5Vsb noise increases with load, though this is not a a major issue as no critical components run on it. The 12V rail noise is not ideal but remains within acceptable limits.
Load regulation was acceptable for the 12V and 5V rails, but the 3.3V rail was marginal. The -12V rail was well out of range; in several tests, it reached almost -14V. Even though this would have an impact on any components that use this rail, many computers no longer rely on this, and the ATX specification actually leaves this as an entirely optional feature. The power supply failed the 1 ms and 10 ms excursion tests, typical for marginal units which handle very short (0.1 ms) and long (100 ms) excursions.
As for audio noise levels, we will be retesting and updating testing data for this power supply for audio noise levels upon the audio chamber’s construction completion.
Please take note that we have now separated our graphs to display the findings for each temperature we tested at. This style presents the findings more clearly because several of the results overlap.
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The GM750's efficiency is slightly lower than similar power supplies. While it is compatible with most systems, it may struggle with high-end hardware. It includes a full suite of protections but may shut down during extremely high loads.
Brownout performance was poor, with the unit sustaining only 8 ms brownouts at full load, making it unsuitable for regions with low power quality. The -12V rail exhibited extreme behavior with a high over current protection (OCP) point, causing the voltage to drop to ~9.2V, which would negatively affect any components relying on it.
Please take note that we have now separated our graphs to display the findings for each temperature we tested at. This style presents the findings more clearly because several of the results overlap.