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NZXT · 850 W · ATX

NZXT C850 Gold ATX 3.1

ATX 3.1 · 80 PLUS Gold · Modular

Capability
77
Cap / price
64
Wattage value
57
Amazon
$120
NZXT C850 Gold ATX 3.1
View NZXT C850 Gold ATX 3.1 Gallery in high resolution
$120
Available on Amazon Updated Aug 30, 2026 Prime FBA
Capability77.2
Capability / price64.4
Wattage value56.7
$120 on Amazon PSU table Compare this PSU

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Written analysis

NZXT C850 Gold ATX 3.1 at a glance

The NZXT C850 Gold ATX 3.1 is a 850 W ATX power supply built to the ATX 3.1 generation. Efficiency is listed as 80 PLUS Gold. Cables are modular. It supports fan-stop at low load.

The calculated capability score is 77.2, averaging the available wattage, recorded efficiency percentage, and warranty inputs against fixed references. Listed warranty is 10 years. +12V output is 71 A.

Best fit: Performance desktops whose calculated component load fits comfortably within a 750–999 W supply.

Platform and cooling

Dimensions are listed as 135 x 135 x 25 mm. Cooling fan size is 135 mm. The unit uses 1 +12V rail at up to 71.00 A per rail. Certifications include 80 Plus Gold.

Current value

At $120, price per kilowatt is $141.16. Capability / price is 64.4 and wattage value is 56.7. Compare nearby supplies below; wattage alone does not determine value.

Unit data

Full specifications

Wattage, efficiency, platform size, electrical outputs, connectors, cooling, and value in one technical sheet.

General

Manufacturer
NZXT
PSU
NZXT C850 Gold ATX 3.1
Launch price
—
Amazon price
$120
Amazon availability
Available
Price updated
Aug 30, 2026

Power & efficiency

Wattage
850 W
Efficiency
80 PLUS Gold
Recorded efficiency
91%
Warranty
10 years

Value

Amazon price
$120
Price / kW
$141.16
Capability
77.2
Capability / price
64.4
Wattage value
56.7

Platform & size

ATX generation
3.1
Form factor
ATX
Dimensions
135 x 135 x 25 mm
Modular
Yes
Fanless
No

Electrical

Input voltage
100-240
+12V output
71 A
+5V output
22 A
+3.3V output
22 A
+12V rails
1
Max amps / rail
71.00 A

Cooling & build

Fan size
135 mm
Fan stop
Yes
Certifications
80 Plus Gold

Additional information

Also listed as
C850 Gold ATX 3.1
Color
Black

Amazon

Price history

Nearby capability

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Vendor copy

Amazon listing details

Marketplace feature text kept for reference. Structured specifications above are the source for scores and comparisons.

ATX 3.1 — Compliant with the ATX 3.1 standard to fuel high-performance PC components with stability, efficiency, and power spike resistance.

40 SERIES READY — Durable, heat-resistant 12V-2x6 connector pumps up to 600 watts to NVIDIA GeForce RTX 40 Series graphics cards.

HIGH EFFICIENCY, LOW NOISE — Awarded certifications of 80 PLUS Gold Efficiency, Cybenetics Gold Efficiency, and Cybenetics A- Noise Level.

ULTRA-LOW NOISE FAN — 135mm fluid dynamic bearing fan with Zero Fan Mode is completely silent when under 50% load.

HIGH-QUALITY CONSTRUCTION — 100% premium Japanese capacitors improve hold-up time and minimal ripple noise, ensuring reliable and stable power delivery.

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