Thermalright's TR-KG750 brings ATX 3.1 and PCIe 5.1 support to affordable builds, but its loud fan and slim efficiency margin make it a tough choice for anyone sensitive to noise or heat.
The Thermalright TR-KG750 offers up-to-date power delivery at a price that undercuts much of the competition, but the savings come with a catch: noise. Under load, this 750W ATX 3.1 unit quickly becomes one of the loudest components in any build, with measured noise levels reaching nearly 51 dB(A) at room temperature and up to 58 dB(A) when things get hot. For anyone hoping to build a quiet PC, that alone is a dealbreaker.
Still, the TR-KG750 isn't stripped down. It's fully modular, includes a native 12V-2x6 cable for new GPUs, and delivers its full 750W on the +12V rail. It checks all the boxes for current standards: ATX 3.1, PCIe 5.1, and a five-year warranty. Voltage regulation and ripple are well controlled, with deviation within 1.8% and ripple far below ATX limits. Over-power protection trips at 1005W, or 134% of the rated output. On paper, the basics are solid.
The compromises show up in the details. The 120 mm Yate Loon D12SH-12 sleeve-bearing fan runs constantly, no matter the load. There's no fanless or semi-passive mode-just a steady whir that turns into a roar under stress. At 25°C ambient, the main heatsink hits 60°C at full load; at 45°C, it passes 100°C. Efficiency barely clears the 80 PLUS Gold mark, with margins as slim as 0.2-0.9 percentage points at 115 VAC. In the hot test, efficiency drops to 84.5% at 115 VAC, leaving little headroom.
The TR-KG750 is listed as a 750W power supply with +12V output of 62.5A and MSRP around $91; the review identifies it as an HKC-built unit sold under the Thermalright badge. - Tom's Hardware, Technical Review
The cable set is generous for the price: one 24-pin ATX, two 4+4-pin EPS, a PCIe 5.1 cable with native 12V-2x6, two PCIe 8-pin, six SATA, and three Molex connectors, all in flat black ribbon. Protections include OPP, OVP, OTP, OCP, SCP, and UVP. The platform, HKC HKCMAX-750, uses a half-bridge LLC topology with DC-to-DC conversion for minor rails. The main capacitor is a 450V/560 µF 105°C Nichicon, but the secondary side mixes Teapo and NICON parts, so calling it a "Japanese capacitor platform" is a stretch.
Electrical performance isn't the problem. Regulation on the 3.3V, 5V, and 12V rails stays within 1.2%, 1.4%, and 1.8%. Ripple at full load is 62 mV on 12V, 34 mV on 3.3V, and 38 mV on 5V-well below ATX thresholds. Over-power protection is reliable, tripping at 1005W. The unit survives hotbox testing without shutting down, and all protections work as intended. The real issue is the constant fan noise and heat, which define the user experience.
Is 750W enough for a modern gaming PC? For most mainstream builds, yes-as long as you check the GPU manufacturer's recommendation and leave some headroom for the CPU and peripherals. The TR-KG750's native 12V-2x6 connector is a plus for new graphics cards, but wattage alone doesn't guarantee compatibility with every high-end setup. Always check requirements before buying.
Comparing it to pricier options like the Cooler Master MWE Gold 750 V4 is telling. The Cooler Master offers a ten-year warranty, quieter operation, and cooler secondary-side temperatures, but costs more. The TR-KG750's main argument is price: it delivers modern standards and protections for less, if you can live with the noise and accept a five-year warranty. For systems that rarely hit full load or where the PSU is hidden away, the tradeoff might be fine. For anyone who wants silence, premium parts, or long-term peace of mind, the savings disappear quickly.
Thermalright's strategy is simple: offer the latest standards and full modularity at the lowest price, and cut costs on acoustics and thermal margin. The result is a PSU that works, but never lets you forget where the savings came from. The fan's constant presence and the heat output aren't minor quirks-they're the main story. In a market where even budget buyers expect quiet, efficient operation, this is a tough sell.
If value and connectivity are your top priorities, the TR-KG750 is defensible. It avoids the pitfalls of non-modular, outdated designs and offers protections that keep it in the running for budget builds. But if you want a more refined experience, look elsewhere. As noted before about feature-rich budget hardware, headline specs are only half the story. The TR-KG750's numbers are respectable, but in practice it's loud, hot, and rough around the edges. This is a power supply for those willing to accept compromise, not for those who want more.
