NZXT C1500 ATX v3.1 PSU Review

The NZXT C1500 is a powerful and high-performance PSU, capable of delivering up to 3000W of power, for short periods, if required. With the upcoming NVIDIA RTX 5090 you will definately be on the safe side, with a 1500W ATX v3.1 compliant power factory. 

The NZXT C1500 will be included in my best ATX v3.x & PCIe 5.x PSU picks article.

The C1500 is NZXT’s flagship PSU model, using a modern platform provided by Channel Well Technology. It can deliver up to 1500W continuously and up to 3000W for short periods, meeting the strict ATX v3.1 requirements. This is not a PSU for the average user, but it addresses highly demanding users who want to push to the max high-end and power-hungry CPUs, and especially GPUs. If you flash your RTX 4090 with a “special” BIOS, allowing for up to 1000W power levels, then a capable 1500W PSU, or an even stronger one, is required. Don’t expect to see performance gains that justify the crazy increase in power consumption under such “special” usage scenarios. Still, there are always people out there who want to push hardware beyond its limits, and I cannot blame them for that because I used to do that many years ago.

The C1500 is named Platinum because of its 80 PLUS rating. Still, Titanium in the Cybenetics scheme uses over 1450 different load combinations to calculate its ratings, contrary to a handful that 80 PLUS takes into account. Using only several load points to calculate a PSU’s efficiency is inaccurate. This could have been enough 20 years ago, but times have changed, and we should improve every certification protocol and standard we use and not remain stuck in the past. Thanks to the versatility of the Cybenetics scheme, the 1450 different load levels can easily be upgraded to 3000 or even 10,000 if required without any significant changes to the certification’s base scheme.

Back to the C1500, it uses a fully modular cable design, and its dimensions are larger than usual since it is a power beast. With a depth of 180mm, you cannot call it large since other similar-capacity PSUs are way larger. Take, for example, the Seasonic TX-1600, which measures 210mm long! I don’t like small, in-dimensional PSUs, or to put it simply, high power-density PSUs, since in most cases, their output noise is extremely high because of the restricted airflow at their internals. An overpopulated PCB with parts that have to handle high power levels will quickly develop high temperatures, so the cooling fan has to spin at high speeds to handle the increased thermal loads.


ATX v3.1 >1300W PSU Reviews:

Technical Specifications:
  • Manufacturer (OEM): CWT (CTT Platform)
  • Max Power: 1500W
  • Cybenetics Efficiency: [115V] Cybenetics Titanium (91-93%) [230V] Cybenetics Titanium (93-95%)
  • Noise: Cybenetics A- (25-30 dB[A])
  • Compliance: ATX v3.1, EPS 2.92
  • Operating Temperature (Continuous Full Load): 0 – 50 °C
  • Alternative Low Power Mode support: Yes
  • Power 12V combined: 1500W
  • Number of 12V rails: 1
  • Power 5V + 3.3v: 120W
  • Power 5VSB: 15W
  • Cooling: 140mm Magnetic Levitation Bearing Fan (MFE0251VX-1Q010-S99)
  • Semi-Passive Operation: ✓ (selectable)
  • Modular Design: Yes (Fully)
  • High Power Connectors: 2x EPS (2x cables), 6x PCIe 6+2 pin (6x cables), 2x PCIe 12+4 pin (600W, 2x cables)
  • Peripheral Connectors: 12x SATA (3x cables), 4x 4-pin Molex (1x cables)
  • ATX Cable Length: 600mm
  • EPS Cable Length: 700mm
  • 6+2 pin PCIe Cable Length: 650mm
  • 12+4 pin PCIe Cable Length: 650mm
  • Distance between SATA / 4-pin Molex: 145/150mm
  • In-cable capacitors: No
  • Dimensions (W x H x D): 150 mm x 85 mm x 180mm
  • Weight: 2.38 kg (5.25 lb)
  • Warranty: 10-years
  • Street price (excluding VAT): $369

Power Specifications

Rail 3.3V 5V 12V 5VSB
Max. Power Amps 22 22 125 3
Watts 120 1500 15
Total Max. Power (W) 1500W (115-240V)
1300W (100-115V)
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4 thoughts on “NZXT C1500 ATX v3.1 PSU Review

  1. Hi,

    Just a quick one, those Sunon Maglev fans, do they not have an issue operating vertically- as I read this somewhere.


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