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Black rectangular ATX power supply unit with modular cable sockets and a 120mm fan grille

NZXT

NZXT NP-1PM-E850A 850 W ATX power supply

SKU CH-YTM6-NRFJY MPN NP-1PM-E850A

A fully modular 850 W ATX power supply with 80 Plus Gold efficiency, digital monitoring via CAM software, independent 12 V over-current protection and a 0 dB fan mode below 100 W load

  • Max wattage850 W
  • Power efficiency> 90%
  • Modular cablingFull Modular
  • Fan configuration120 mm Fluid Dynamic Bearing Fan
  • Main power connector24Pin
  • 12V railsSingle
  • 80 Plus Gold certified efficiency above 90 %
  • Fully modular design simplifies cable management
  • 0 dB mode keeps fan silent below 100 W load
  • CAM software monitors voltage, temperature and uptime
  • Independent over-current protection on 12 V rails safeguards components

850 W ATX power supply for gaming PCs

This fully modular 850 W ATX power supply delivers clean power to high-performance gaming systems. It uses a single +12 V rail rated at 70 A and carries 80 Plus Gold certification for efficiency above 90 percent. Japanese capacitors and a 10-year limited warranty back long-term reliability.

CAM software monitoring and 0 dB fan mode

Digital voltage and temperature monitoring feeds real-time wattage per rail, total uptime and internal temperature into NZXT CAM software. An onboard DSP enables independent over-current protection for the 12 V outputs to the motherboard, CPU and GPU. Below 100 W load the 120 mm fluid dynamic bearing fan stops completely for silent operation.

Handles single or multi GPU builds

Six 6+2-pin PCIe connectors and eight SATA power connectors support single or multi GPU configurations and plenty of storage. The 24-pin ATX and EPS12V v2.92 connectors cover modern motherboards. Builds needing more than 850 W or additional PCIe cables will require a higher-capacity unit.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $140.99
Typical for this category: the median of 10,869 items is $142.99.
Max wattage 850 W
Typical for this category: the median of 930 items is 850 W.

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Specifications

Product
Brand nameNZXT
Product lineE Series
Model nameNP-1PM-E850A
Part numberNP-1PM-E850A-US
Product typeATX12 V v2.4 / EPS12 V v2.92
Ports & slots
PCIe power connectors6 × 6+2-Pin
SATA power connectors8
Output type+3.3 V@20A, +5 V@20A, +12 V@70A, +5VSB@3A
Connection types1 × 24-pin ATX power
2 × 4+4-pin CPU power
6 x PCIe (6+2 pin)
8 x SATA
6 x Peripherals
1 x Mini-USB
Power
Max wattage850 W
Power efficiency> 90%
Modular cablingFull Modular
Main power connector24Pin
12V railsSingle
Efficiency certification80 PLUS GOLD Certified
Overvoltage protectionYes
Supply voltage100–240 V
AC input frequency50–60 Hz
Rated input current12–6 A
Size & build
Product dimensions3.39 in × 5.91 in × 5.91 in
Product weight5.51 lb (2.5 kg)
Shipping weight3.20 kg
Package size351 × 224 × 109 mm
Compatibility
PSU length limit150 mm
Environment & compliance
Regulatory approvalsCB / CE / FCC / TUV / cTUV-SUDus / China CCC / Taiwan BSMI / Australia RCM / EAC
More details
Fan configuration120 mm Fluid Dynamic Bearing Fan
Mean time between failures100,000 h

Questions about this item

What maintenance or replacement will the 120mm Fluid Dynamic Bearing Fan need over time?

The 120mm Fluid Dynamic Bearing Fan is designed for long life and typically requires only occasional dust cleaning; no scheduled bearing replacement is expected during normal use.

What limit appears first when the 850 W unit runs at full load continuously?

The +12V rail is rated at 70 A, so sustained loads that draw more than that on the 12 V output will hit the current limit before the overall 850 W rating is reached.

How much noise, heat or power draw should I expect once the PSU runs all day under typical loads?

Below 100 W the 0 dB mode keeps the fan completely silent; above that the fan spins up gradually, and 80 Plus Gold efficiency keeps waste heat and input power low during continuous operation.

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