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White rectangular ATX power supply unit with modular cable ports and a 135 mm fan grille

NZXT

NZXT PA-8G2BW-US 850 W ATX 3.1 power supply

SKU CH-P3XP-JW7V3 MPN PA-8G2BW-US

Fully modular ATX 3.1 unit delivers 850 W with 80 Plus Gold efficiency, a 135 mm FDB fan that stops below 50 % load, and a 12V-2x6 cable for RTX 50 Series GPUs

  • Max wattage850 W
  • Modular cablingFull Modular
  • Fan configuration1 × 135 mm FDB
  • Power factor correctionActive @0.99
  • Efficiency certification80 PLUS GOLD Certified
  • Supply voltage100–240 V

Model 850W (White)

  • 850 W continuous power supports demanding GPU and CPU loads
  • ATX 3.1 compliant design meets latest power-excursion and efficiency standards
  • 80 PLUS Gold certified with 0.99 active PFC reduces wasted energy
  • 135 mm FDB fan with zero-fan mode stays silent below 50 % load
  • Fully modular cables with nylon sleeving keep builds tidy and airflow clear

ATX 3.1 compliant 850 W power supply

This fully modular unit meets the ATX12V v3.1 and EPS12V v2.92 standards, delivering 850 W of continuous power. It carries 80 PLUS Gold certification and uses a 135 mm FDB fan with a zero-fan mode that stops the blades below 50 % load. Japanese capacitors and a full set of nylon-sleeved cables complete the package.

Builders needing ATX 3.1 power and quiet operation

The supply suits systems that require the 12V-2x6 connector for modern GPUs and benefit from silent running at typical desktop loads. Its 160 mm depth fits most mid-tower cases, but very compact chassis may not accommodate the length. Users who do not need the new 12V-2x6 connector or who prefer a smaller footprint should consider other models.

12V-2x6 cable rated for 600 W GPU power

The included 12V-2x6 cable can deliver up to 600 W to a compatible graphics card, which is the decisive specification for pairing this unit with high-end GPUs. If the target graphics card draws more than 600 W through that connector, a higher-rated power supply is required.

How it compares

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

Price $115.99
Cheaper than about 60% of the 10,869 comparable items (median $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
Model namePA-8G2BW-US
Part numberPA-8G2BW-US
Product typeATX12 V v3.1 / EPS12 V v2.92
Product colorWhite
Ports & slots
Output type+3.3 V@22A, +5 V@22A, +5VSB@3A
Connection types24-pin ATX Power Cable: 600 mm with nylon sleeving, Output Connectors: 1
4+4-pin CPU Power Cable: 700 mm with nylon sleeving, Output Connectors: 1
8-pin CPU Power Cable: 700 mm with nylon sleeving, Output Connectors: 1
6+2-pin PCIe Power Cable: 650 mm with nylon sleeving, Output Connectors: 3
16-pin (12+4) 12 V-2 × 6 PCIe Cable: 650 mm with nylon sleeving, Output Connectors: 1
SATA Cable: 500+150 mm, Output Connectors: 12
Peripherals Cable: 500+150 mm, Output Connectors: 4
Power
Max wattage850 W
Modular cablingFull Modular
Power factor correctionActive @0.99
Efficiency certification80 PLUS GOLD Certified
Supply voltage100–240 V
AC input frequency50/60 Hz
Rated input current10A-5A
Built-in protectionOVP (Over Voltage), UVP (Under Voltage), SCP (Short Circuit), OTP (Over Temp), OPP (Over Power), OCP (Over Current)
Size & build
Product dimensions150 × 86 × 160 mm
Shipping weight3.79 kg
Package size318 × 216 × 121 mm
Environment & compliance
Regulatory approvalsFCC, Canada, CE, CB(IEC 62368-1), UKCA, CCC, BSMI, BIS, RCM, UAE, TUV, cTUVus, KC, CP65
More details
Fan configuration1 × 135 mm FDB
Mean time between failures>100,000 h

Other versions of this model

5 more in the same range

Questions about this item

Will the included 12V-2x6 cable support a new RTX graphics card that draws up to 600 watts?

Yes, the 12V-2x6 cable is rated to deliver up to 600 watts to compatible RTX cards.

Does the 135 mm fan stay off during light workloads to keep the system quiet?

Zero Fan Mode stops the fan completely while the load remains under 50 percent.

Are all cables detachable so I only install what my build actually needs?

The unit is fully modular with a complete cable set included in the box.

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