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Rectangular black metal PSU with gold badge, modular sockets and 120mm fan grille

GIGABYTE

GIGABYTE GP-P850GM power supply

SKU CH-AVY9-MVNXR MPN GP-P850GM

A fully modular 850 W ATX power supply with 80 Plus Gold efficiency and a 120 mm hydraulic-bearing fan that stops below 20 % load

  • TypeATX 12V v2.31
  • Maximum Power850 W
  • Fans120mm Hydraulic Bearing (HYB) Fan
  • PFCActive (>0.9 typical)
  • Main Connector20+4Pin
  • +12V RailsSingle

Options ATX 80+ Gold (850W)

  • Full modular cabling cuts clutter and improves airflow
  • 80 PLUS Gold certification delivers 90 percent typical efficiency
  • Single +12V rail provides stable power to graphics cards
  • 120 mm hydraulic bearing fan stops below 20 percent load
  • Japanese capacitors and full protection suite extend reliability to 100000 hours MTBF

850 W ATX 12V v2.31 supply

The GIGABYTE GP-P850GM is an ATX 12V v2.31 power supply rated for 850 W of continuous output. A fully modular cable set lets builders connect only the leads they need, reducing clutter and improving airflow inside the case. The unit carries 80 PLUS Gold certification, guaranteeing 90% efficiency at typical load.

Suits single-GPU builds; avoid multi-GPU rigs

This supply fits mid-range and high-end single-GPU systems that demand clean cable routing and quiet operation. The 120 mm hydraulic-bearing fan stops completely below 20% load, keeping noise near zero during idle or light work. Builds planning multiple graphics cards should look elsewhere because only four PCIe 6+2-pin connectors are provided.

Single +12 V rail delivers the full 850 W

All 850 W are available on a single +12 V rail, so the CPU and GPU draw from one unified power pool without rail-balancing concerns. Active PFC with a typical power factor above .9 ensures stable input across 100–240 V mains. Japanese main capacitors and a full protection suite (OVP, OPP, SCP, UVP, OCP, OTP) back long-term reliability.

Points forts

  • Full modular cabling cuts clutter and improves airflow
  • 80 PLUS Gold certification delivers 90 percent typical efficiency
  • Single +12V rail provides stable power to graphics cards
  • 120 mm hydraulic bearing fan stops below 20 percent load
  • Japanese capacitors and full protection suite extend reliability to 100000 hours MTBF

Caractéristiques

BrandGIGABYTE
ModelGP-P850GM
TypeATX 12V v2.31
Maximum Power850 W
Fans120mm Hydraulic Bearing (HYB) Fan
PFCActive (>0.9 typical)
Main Connector20+4Pin
+12V RailsSingle
PCI-Express Connector4 x 6+2-Pin
SATA Power Connector8
Max PSU Length140 mm
ModularFull Modular
Efficiency90% at typical load
Energy-Efficient80 PLUS GOLD Certified
ProtectionOVP / OPP / SCP / UVP / OCP / OTP
Input Voltage100 - 240 V
Input Frequency Range60 - 50 Hz
Input Current12A - 6A
Output+3.3V@20A, +5V@20A, [email protected] , [email protected] , +5VSB@3A
MTBF>100,000 Hours
ApprovalsBSMI / CE / CCC / FCC / TUV / RCM / CB / EAC / KCC / UL
Connectors1 x ATX/MB 20+4 Pin
2 x EPS/ATX 12V 4+4pin
4 x PCI-e 6+2 pin
8 x SATA 5 pin
3 x Peripheral 4-pin
1 x Floppy 4-pin
Features80 PLUS Gold certified
Fully modular design
120mm Smart Hydraulic Bearing (HYB) Fan
Main Japanese capacitors
Powerful single +12V rail
Dimensions3.39" x 5.91" x 5.51"
Poids d’expédition2.52 kg
Dimensions du colis254 × 206 × 117 mm

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Questions sur cet article

Will the 20+4-pin ATX connector and single +12V rail work with a motherboard built for an older ATX 12V spec?

The unit follows ATX 12V v2.31 and provides a 20+4-pin main connector plus a single +12V rail rated at 850 W, matching the physical and electrical interface used by earlier ATX 12V motherboards.

How can I confirm the 120mm hydraulic bearing fan is running correctly after installation?

The fan spins up at power-on and remains off below 20% load; you can hear it start when the system draws more power and verify the 80 PLUS Gold efficiency by checking that the unit stays cool at typical loads.

Which cables are included in the box and what must I buy separately?

The fully modular package includes the 20+4-pin ATX cable, four 6+2-pin PCIe cables, eight SATA power cables and peripheral cables; no extra cables are required for a standard build.

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