NZXT C1000 Review: NZXT’s New 1000 Watt Power Supply

While we can neither confirm nor deny the speculations and rumours, we can read a trend or two between the lines. These rumors and trends? That we might see power-hungry components of this next generation of GPUs and CPUs. While we still don’t have confirmation of the next release from NVIDIA or what the next AMD Radeon offerings will look like, AMD’s Ryzen 7000 series processor announcement and some nifty interview questions from our compatriots at TechPowerup give us more than an indication of where the ceiling will be – at least for CPUs.

At the heart of this discussion is the often overlooked heart of any PC system: the power supply. It’s not as sexy as a new motherboard or a fancy GPU and it’s certainly not the most dazzling accessory, but a reliable and stable power supply is essential if you want your PC to perform well… and for a long time. And that’s where NZXT hopes to provide a simple yet solid foundation for the future with the C1000 Gold 1000W PSU.

In this product spotlight, we’ll look at some of the features the C1000 Gold has to offer, where it fits into today’s PSU landscape, some pros and cons, and what it was like to use in our Version H7 Elite.


  • Retail Price: $179.99
  • Dimensions (L x W x H): 150mm x 150mm x 86mm
  • Material(s): Steel, PCB and plastic
  • Compliance standard: ATX12V v2.52 / EPS12V v2.92
  • PF fix: [email protected]
  • AC input power: 100V-240V 13A-6.5A 50Hz-60Hz
  • DC output rating:
    • Voltage: +3.3v +5v +5Vsb +12V -12V
    • Maximum load: 22 A 22 A 3 A 83.5 A 0.3 A
    • Power Output (Watts): 120W 120W 15W 1002W 3.6W
  • Energy efficiency: 80 Plus Gold
    • 10% loading: 85%
    • 20% loading: 87.5%
    • 50% loading: 90.5%
    • 100% loading: 87.5%
  • Operating temperature: 0 to 50°C
  • Regulation and certificate (EMC and safety): cTUV-SUDus / CUL (UL60950/62368-1) / TUV / (EN60950/62368-1) / CB / (IEC 950/62368-1) / CCC / CEC /BSMI / RCM / EAC / CE / LVD / UKCA
  • MTBF: 100,000 hours
  • Cables included:
    • 1 ATX 24-pin power supply (600 mm)
    • CPU power supply 2 x 8 pin (700 mm)
    • 3 x 8 pin PCIe power supply (650mm, 150mm extension)
    • 2 x SATA power supply (500mm, 150mm extension)
    • 2 x Molex Power (500mm extension, 150mm)
  • Output connectors:
    • 1 ATX 20+4 pin power supply
    • 2 x 4 + 4 pin CPU power supply
    • 6 x 6 + 2 pin PCIe power supply
    • 6 SATA connectors
    • 6 Molex connectors
  • Fan Specifications:
    • Dimensions: 135 x 135 x 25 (mm)
    • Nominal voltage: 12 VDC
    • Rated speed: 0-2300 ± 10% rpm
    • Airflow: 93.02 CFM (Tpy.)
    • Noise: 44.5 dBA maximum
    • Bearing: FDB (Fluid Dynamic Bearing)
  • Warranty: 10 years

While this is not the first power supply we saw coming out of NZXT, the C1000 represents the top of the line in a refresh of the C-Series range. Starting with a 650W PSU starting at $129.99, the C-Series offers a gradual increase in power up to the 1000W unit we are reviewing today.

(Left: NZXT C1000 Right: NZXT E850)

These PSUs offer zero-rpm fan mode for quiet operation and the cables are fully modular, features that usually come with a premium price tag. NZXT, however, offered them at competitive prices compared to other major brands in the market. At $179.99, the C1000 jockeys for position with the Seasonic PRIME GX-1000 and Corsair’s RM1000x. This is a pleasant surprise for an NZXT product!

Since we are talking about the modular nature of this series, we should talk a bit about the cables packed with the unit. Like the E850, the C1000 comes with a branded purple pouch containing all the cable connections you might need for your build. For the most part the cables are decent from the factory. With the exception of the power cable, each of the C1000’s cables has nice woven sheaths, but the cables themselves are a bit stiff. This makes cable routing and management a bit cumbersome, especially with the 20+4 pin motherboard power cable. We’ll cover more of that later.

Unfortunately, at the time of writing, the availability of spare cables is a bit risky. Although CableMod has custom options buried deep in its configurator, previous sets (like the ones I purchased for the E850) will not work with the C1000. For now, we’ll have to wait and see if compatible options become more widely available for better PC build theming.

Speaking of PC builds, we used the C1000 in our recent build of the NZXT H7 Elite case. This build includes NVIDIA’s RTX 3090 and AMD’s Ryzen 9 5900X, so power, specifically for the GPU, is an important consideration. Due to the nature of the case, installation was seamless. The mounting holes are easy to distinguish from typical PSU ventilation holes, so there was no confusion as to what needed to be lined up where.

As for the wiring, we were able to hook up the cables to the PSU we needed before screwing the PSU to the case, tucking the excess length into the bottom cavity of the H7 Elite. We did our best to attach these cables, but this is where the rigidity of the cables gave us some problems. Even in its woven case, the motherboard cable is quite thick, which makes it (as mentioned before) quite unruly to manage, but it was the 6+2 pin GPU cables that were, in my opinion, the most difficult to manage. use for this. to build.

Let me explain:

Due to the 350W TDP, we’ve made a habit of splitting the RTX 3090’s power connections between two cables, even though each included cable has two 6+2 pin connectors. In the previous version of this GPU, we used the Corsair RM850x for the power supply. This PSU included a few different options for GPU cables, including two single 6+2 pin cables with a little more flexibility than the C1000 wiring. So by using two of the C1000’s included cables, we could route them where we needed them, but the stiff and bulky nature of the cables cluttered the build more than we’d like. This proved especially true when we tried to route power to a vertically mounted GPU.

Final Thoughts

The C1000 is NZXT’s answer to the growing power needs in the PC component landscape. It is functional to meet the needs of this scaling and quite easy to install. Its modular design and optional zero RPM fan give the series that high-end NZXT feel we’ve all come to know, but there are a few things to consider when approaching this unit.

If users care about strict cable management, they may struggle if they don’t have a decent internal PC case space to work with. Additionally, the current limitations of third-party options may spell pause for even the pickiest PC builder. However the cables, while a little stiff for my preferences, have a high quality feel, similar to those found with the older E-series.

If you’re looking for a powerful PSU that can pump out the juice the next-gen needs, NZXT has a modest offering to consider in the C1000. The C1000 is priced competitively in its range of efficiency and power, making it an attractive choice. If 1000W is more than what you’re looking for, NZXT’s other C-series models might also be worth your consideration.

The product described in this article was provided by the manufacturer for evaluation purposes.

Alan A. Seibert