NZXT C750 Power Supply Review

NZXT is a known good brand for producing innovative and quality PC component products for PC gamers and enthusiast. Today we are reviewing a 750 watts power supply of the new C Series power supply from NZXT, the new NZXT C750 Power Supply Unit.

The NZXT C750 Power Supply offers reliable power while ensuring optimal efficiency and quieter performance. Manufactured with high-quality components and backed by a 10-year warranty, the C Series power supplies deliver both peace of mind and clean reliable power to your PC gaming system

Now let's see what this NZXT C750 PSU has for us.


A push of a button enables Zero RPM Fan mode, silencing the fan under low-load conditions. When needed, the 120mm fluid-dynamic bearing fan spins up to efficiently cool the PSU, keeping your system stable and running through even the most intense gaming session.

The C series fits any case conforming to the ATX standard with the C750 and C850 support NVIDIA GPUS up to 3090 and AMD GPUs up to AMD Radeon VII.

The modular design lets you use only the cables you need, ensuring easier installation, and less clutter. The sleeved main cables look great and resist heat damage as well as fraying, delivering greater durability and longevity.

In addition to world-class service and support, NZXT provides a 10-year warranty for the C Series PSU, so you can enjoy a worry-free gaming experience..



NZXT C750 PSU comes in a securely packaged box with PSU graphics, Model name and features highlights on front and the back of the box.

Inside the box

Box includes NZXT C750 with modular cables, Power cable, PSU mounting screws and User manual


NZXT has done a great effort on aesthetics of the PSU. With a matte black paint and unique fan grill, gives the PSU a premium feel.


Seasonic being the OEM, the NZXT C750 power supply offers very good build quality ensures reliable power delivery with great efficiency. PSU have all Nippon Chemi-Con capacitors with 105C rating with nice PCB design and component layout. Main transformer generates 12v rail and DC-DC converters are used for other minor supply voltages.


Test system configuration -

CPUIntel i9-9900K
RAM2 X 8GB Corsair DDR4 3000Mhz
SSDCorsair Force GT 240GB SSD
GFX ASUS GeForce RTX3080 TUF Gaming OC
Case Corsair iCUE 4000X Case
DisplayASUS PB287Q
OS Windows 10

The NZXT C750 power supply handled above gaming setup very comfortably, with RTX 3080 and i9-9900K maxed stable overclocked.

Custom made DC Active dummy load PSU tester.

Load Test

To test the PSU on my Active load test, I have manually increased the load in Amps on 12v first rail, 12v second rail, 5v and 3.3v rail to simulate 100%, 80% 50% and 20% load. Since this PSU is having only single 12v rail, so divided the load in half on both 12v loads on my tester.

5V stand-by and -12V supply was left at a constant 0.5amp load throughout the test run.

Maximum theoretical load handling capacity of my tester is somewhat around 1500W, but due to MOSFETs safe operating area (SOA) characteristics and thermal load handling capacity of the heatsinks, this tester can handle Max 1300W.. For safety reasons I have also installed a thermal controller which turn OFF the attached PSU if temperature exceeds SOA specifications.

During test the PSU ran smoothly close to 800W of load, when tried to pull more the PSU turned itself OFF showing the proper working of Overload protection .


  • Quality Build
  • 10 years warranty
  • Attractive design
  • 80 Plus Gold certified
  • Fully modular
  • Semi-passive Fan operation


  • Nil


A 750 watts Power supply is one of the highly popular PSU segments among mid-range PC builders and gamers as it offers enough power for decent mid-to high range of PC hardware. And there are many options available with 750 watts and 80 Plus Gold efficiency.

In our testing of NZXT C750 Power Supply showed good voltage stability, efficiency and clean power delivery. And we were able to push our i9-9900K CPU upto 5.8GHz easily.

Finally, if you are looking for a 750 watts PSU with 80 Plus Gold efficiency for your gaming PC build, the NZXT C750 Power Supply offers an attractive design, excellent build quality along with a peace of mind 10 years warranty, making this power supply unit great option for your build and is worthy of our PC TeK Reviews CHOICE Award.

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