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

Phanteks

Phanteks PH-P850GH_BK01 850 W power supply

SKU CH-C1GA-7RA26 MPN PH-P850GH_BK01

Fully modular 850 W ATX 3.1 unit with PCIe 5.1 12V-2x6 connector, 80 Plus Gold efficiency, 120 mm fan with zero-RPM mode under 40 % load, Japanese capacitors, and a 140 mm compact depth

  • ColorBlack
  • TypeIntel ATX 3.1/PCIe Gen5.1
  • Maximum Power850 W
  • Fans1 x 120 mm
  • ModularFull Modular
  • Energy-Efficient80 PLUS GOLD Certified

Option PH-P850GH_BK01

  • ATX 3.1 and PCIe 5.1 platform ready for next-gen hardware
  • 80 Plus Gold efficiency lowers energy waste and heat output
  • 120 mm fan stops completely below 40 % load for silent running
  • Fully modular textured cables with combs simplify clean cable routing
  • 12V-2x6 connector delivers up to 600 W through a single cable

What the 850 W ATX 3.1 unit is

The Phanteks AMP GH 850 W power supply delivers 850 W maximum power on the Intel ATX 3.1 platform with PCIe 5.1 support. It is built with 100% Japanese capacitors and carries 80 PLUS Gold certification. The fully modular design uses individual textured cables and includes cable combs for tidy routing. A 120 mm fluid dynamic bearing fan provides a zero-RPM mode below 40% load for silent operation.

Installation and common pitfalls

The compact ATX form factor at 140 mm depth fits standard cases and the fully modular cabling means you connect only what the build needs. The 12V-2x6 GPU cable supplies up to 600 W through a single connector for modern graphics cards. Protection circuits include OPP, OVP, UVP, SCP, OCP, OTP, no-load and reset protection. MTBF exceeds 100,000 hours.

Who this suits and who should look elsewhere

Builders assembling a high-performance PC with a PCIe 5.1 graphics card and an ATX 3.1 motherboard will find the platform features and silent fan mode a good match. The 850 W ceiling limits systems that require more headroom for multiple GPUs or extreme overclocking. Buyers needing higher wattage or a different form factor should consider other options.

Highlights

  • ATX 3.1 and PCIe 5.1 platform ready for next-gen hardware
  • 80 Plus Gold efficiency lowers energy waste and heat output
  • 120 mm fan stops completely below 40 % load for silent running
  • Fully modular textured cables with combs simplify clean cable routing
  • 12V-2x6 connector delivers up to 600 W through a single cable

Specifications

BrandPhanteks
ModelPH-P850GH_BK01
ColorBlack
TypeIntel ATX 3.1/PCIe Gen5.1
Maximum Power850 W
Fans1 x 120 mm
ModularFull Modular
Energy-Efficient80 PLUS GOLD Certified
OutputOPP (Overpower Protection)
OVP (Over Voltage Protection)
UVP (Under voltage protection
SCP (Short Circuit Protection)
OCP (Over Current Protection)
OTP (Over Temperature Protection)
No-Load Protection
Reset Protection
MTBF>100,000 Hours
Shipping weight3.04 kg
Package size305 × 229 × 122 mm

Other versions of this model

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Questions about this item

How can I confirm the fan is running in zero-RPM mode during light loads?

The 120 mm fan stops below 40 % load, so silence confirms the mode is active.

Which cables and accessories are included, and what must I source separately?

Fully modular individual textured cables and cable combs are included; no extra cables are required for a standard build.

Should I choose the 750 W, 850 W, 1000 W or 1200 W version for a GPU that draws up to 600 W?

The 850 W model delivers the full 600 W through its single 12V-2x6 connector and meets ATX 3.1 specs for next-gen GPUs.

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