NZXT C1200 Gold PSU Review: Top Performance

The NZXT C1200 achieves high overall performance and on top of that, and it is ATX v3.0 and PCIe 5.0 ready. Thanks to its 600W 12VHPWR connector, it won’t have a problem powering NVIDIA’s energy-hungry RTX 4090. 

NZXT collaborated with Channel Well Technology for the high-capacity C1200 Gold unit, which is ATX v3.0 and PCIe 5.0 ready, featuring a 600W 12VHPWR connector. The 260-dollar price tag looks decent, given the product’s specs, and it is at the same level as the Corsair RM1200 Shift. In Cybenetics, the PSU achieves a Gold efficiency rating and a Standard+ noise rating. With only 150mm depth, this is a compact unit. Lastly, the ten-year warranty is in line with the majority of competing offerings.

The C1200 features a selectable semi-passive operation, and its cooling fan uses a fluid dynamic bearing for lower noise output and increased reliability. The problem with FDB fans is that they receive significant stress during the start-up phase till the lubricant goes all the way up to the shaft, and this is why they are not ideal for frequent start and stop operation. Moreover, double ball-bearing fans offer higher reliability under high operating temperatures above 40C.

Cybenetics Report

 

Technical Specifications:
  • Manufacturer (OEM): CWT
  • Max Power: 1200W
  • Cybenetics Efficiency: [115V] Gold (87-89%)
  • 80 Plus Efficiency: Gold
  • Noise: Cybenetics Standard+ (35-40 dB[A])
  • Compliance: ATX v3.0, EPS 2.92
  • Alternative Low Power Mode support: Yes
  • Power 12V: 1200W
  • Power 5V + 3.3v: 120W
  • Power 5VSB: 15W
  • Cooling:135mm Fluid Dynamic Bearing Fan (HA13525H12SF-Z)
  • Semi-Passive Operation: Yes (selectable)
  • Modular Design: Yes (Fully)
  • High Power Connectors: 2x EPS (2x cables), 4x PCIe 6+2 pin (2x cables), 1x PCIe 12+4 pin (600W)
  • Peripheral Connectors: 8x SATA (3x cables), 4x 4-pin Molex (single cable)
  • ATX/EPS Cable Length: 600/700mm
  • Distance between SATA/4-pin Molex connectors: 150mm
  • In-cable capacitors: No
  • Dimensions (W x H x D): 150 mm x 85 mm x 150 mm
  • Weight: 1.77 kg (3.90 lb)
  • Warranty: 10 years
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18 thoughts on “NZXT C1200 Gold PSU Review: Top Performance

  1. Owned two in the span of 4 days. Both had coil whine in idle state. One switched off itself after a few hours of use. Had to return it. I’m on the second one now and waiting to see if it has the same defect. Probably will return it also and stay away from NZXT as the coil whine is infuriating. In Europe so 230V here.

    1. Weird, this platform is also in the TT GF3 1200, Montech Titan Gold 1200. I have evaluated 5-6 models and didn’t notice anything weird. You probably had bad luck. Check also the other system parts, because coil whine is because of a combination of parts.

      1. Thank you – You are right! The first one seems to suffer from some defect that made it shut down the pc after a while. The second seems to stable up till now. Thanks to you I discovered it has something to do with the MSI SUPRIM X GeForce RTX 4070 Ti. I removed the PSU and used PSU tester and there was no coil whine.

        When I start up the PC with the MSI card there is coil whine coming from the PSU till I boot into windows and turn on my second screen or start a game then it’s gone. It is really coming from the PSU. I honestly don’t know why but my theory is that in combination with the MSI card something is happening at very low loads that is causing this. Honestly very annoying tho as this card is dead silent and I dont want another.

        1. Hello. I faced the same problem. But first I want to say that I really like your site and want to thank you for your work. After reading this article, I finally decided which PSU I want. Before that, the search took several weeks. I barely managed to buy it for a good price of 200 EUR on Amazon.

          When I finally assembled the computer, I was very upset. The noise from the coils was terrible. It is interesting that it is present when the system is not under load. For example, while surfing in the browser. Another interesting observation is that if you boot Windows in safe mode – there is no coil whine. Also the whine goes away if you run the motherboard BIOS. Another observation, the noise is only present when the PSU is paired with my new AMD Radeon 6900 XT graphics card. If I put in my old 5700 XT video card the coil whine goes away. I concluded that it had something to do with the AMD driver. If there is a standard Windows driver, everything is fine. As soon as you install the actual driver from AMD, the problem appears. I have tried several drivers from this year and last year, problem exists with all of them. Maybe it’s somehow related to energy saving? I tried to do software undervolt in the driver itself, it did not solve the problem. If I start a game or something else that loads the card, the problem seems to disappear, or I can’t hear it because the fans on the video card are working.

          I don’t know what to do. I will no longer be able to change the video card, because I bought it last Christmas and the deadline for returning it to the store has already passed. It was because of the new video card that I was forced to change the PSU. I can still return the PSU to the store, but I’m not sure that will solve my problem, and at this price, I can’t see anything better right now. It probably won’t work to exchange for the same model either, because they are no longer available. Please help, I need advice.

          I made a couple of videos to record the coil whine, with the new video card and a video with the old video card. Also, there is a strange click when turning on and off the PSU, similar to the start of a fan. They are present both with Zero Fan Mode and without it. If needed, I can share the link.

          1. I think I found some connection between this problem and the driver settings. I have a LG 34GK950F monitor. It supports FreeSync 2. If you turn off AMD FreeSync Premium Pro in the AMD driver and set the monitor frequency to 144 Hz – the coil whine disappears. If you reduce the frequency of the monitor to any other value – the coil whine returns. When the AMD FreeSync Premium Pro option is enabled, coil whine is unfortunately always present. There is no coil whine in games or other 3D programs (for example, in UFO Test: Ghosting).

            Perhaps these observations will be useful to someone. I think most users with such a combination (NZXT C1200 PDU, AMD 6000-series GPU and 144 Hz monitors with FreeSync 2 support) will have this problem.

            I like the FreeSync 2 feature, so I plan to change this PSU to another one from Corsair.

  2. Hi there,
    any plans to test the NZXT C850 2022 PSU?
    Only found a “real” review by eteknix which suggests performance and efficiency are top notch. The 2022 models are all be based on the CWT CSZ platform as opposed to the 2020 model, which was produced by Seasonic, right?
    So is it safe to assume that the C850 achieves about the same performance as the C1200 model (although the C1200 is ATX 3.0 whereas the lower power models aren’t)?

      1. Thanks for the suggestions!
        What I don’t understand in general (likely because I am a noob when it comes to PSUs):
        How can the same platform (e.g. CWT CSZ) be used in ATX 2.5x and ATX 3.0 PSUs? What parts of a PSU are different internally between ATX 2.5x and ATX 3.0 PSUs that are based on the exact same platform, if any? Or is ist just a matter of certification (costs) and the 12VHPWR outlet being present or not?

  3. Hi,
    I must say these are great reviews.

    I am divided which one to go for between NZXT c1200w and Thermatake Toughtpower GF3 1200w. Any recommendations?

    1. The NZXT C1200 has slightly better performance, although it uses the same platform, because of some part changes. If the price difference is small go with NZXT.

      1. Great, thank you for your suggestion.
        Overall which 1000w-1200w PSU would you recommend?

          1. Hi, I have checked the article. It is absolutely great and informative.
            A colleague of mine pushes me more to Be Quiet! Straight Power 11 1000W Platinum instead of NZXT C1200 or C1000.

            I will appreciate if you provide your opinion which one should I get between Be Quiet! Straight Power 11 1000w Platinum vs NZXT C1000 Gold?

            CPU: Intel i5-13600k, GPU: RTX 3070 Ti, or 4070Ti OC, 3 to 4 M.2 SSD’s, 1 x Fan cooler, Gigabyte ATX Z790 Gaming X AX Motherboard, 2 x 32gb DDR5 Ram (total 64gb), No Sata

            Thanks a lot.

          2. I am not sure if I already replied to you but anyway will write this down. The Straight Power 11 1000W is old, and not ATX v3.0 ready. You should get an ATX v3.0 ready PSU, because it is future-proof and will support the current and upcoming GPUs.

  4. I have a question about the C1200 PSU. I am want to get a custom 12VHPWR cable but cant find one that mentions this PSU. So I’m asking if all pinouts are the same on the 12VHPWR cables and if not what power supply has the same pinout? Thanks for you help on this matter.

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