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Rectangular silver ATX power supply with fully modular cable sockets and a 120mm fan grille

GIGABYTE

GIGABYTE GP-UD850GM-A PG5 850 W fully modular ATX 3.1 power supply

SKU CH-7GDR-FPH7P MPN GP-UD850GM-A PG5

Fully modular 850 W ATX 3.1 unit with 80 PLUS Gold efficiency, Japanese capacitors, a 120 mm hydraulic bearing fan and native 16-pin PCIe 5.0 cable

  • Max wattage850 W
  • Modular cablingFull Modular
  • Fan configuration120 mm Hydraulic Bearing Fan
  • 12V railsSingle
  • Efficiency certification80 PLUS GOLD Certified
  • Built-in protectionOVP/OPP/SCP/UVP/OCP/OTP
  • 850 W single +12V rail powers demanding builds
  • 80 PLUS Gold certified for 80%+ efficiency at typical loads
  • Fully modular cabling keeps the case tidy
  • 120 mm hydraulic bearing fan with smart switch runs quietly
  • ATX 3.1 and PCIe Gen 5.0 ready with native 16-pin cable for 600 W GPU support

850 W ATX 3.1 power supply

This fully modular unit delivers 850 W from a single +12 V rail and carries 80 PLUS Gold certification. It is built with 100 % Japanese capacitors and a 120 mm hydraulic bearing fan that includes a smart fan switch. The compact 150 x 140 x 86 mm form factor fits standard ATX cases while leaving cable routing clean.

ATX 3.1 and PCIe Gen 5.0 ready replacement

It replaces older ATX 2.x units that cannot meet the new excursion rules. The supply sustains up to 3 times the GPU power and 2 times total power for brief spikes, and it hits 70 % efficiency at low loads. A native 16 pin cable is included for direct connection to modern graphics cards.

600 W GPU headroom on a single rail

The single +12 V rail can feed a graphics card drawing up to 600 W through the 16 pin connector while still powering the rest of the system. Six protection circuits (OVP, OPP, SCP, UVP, OCP, OTP) guard the output. Builds with multiple high-wattage GPUs or extreme overclocking headroom will exceed the 850 W limit.

How it compares

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

Price $75.99
Cheaper than about 77% 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 nameGIGABYTE
Model nameGP-UD850GM-A PG5
Product typeATX 3.1
Power
Max wattage850 W
Modular cablingFull Modular
12V railsSingle
Efficiency certification80 PLUS GOLD Certified
Built-in protectionOVP/OPP/SCP/UVP/OCP/OTP
Size & build
Product dimensions150 × 140 × 86(mm)
Shipping weight3.11 kg
Package size318 × 203 × 127 mm
In the box
Included items315.5 × 206 × 117(mm)
More details
Fan configuration120 mm Hydraulic Bearing Fan

Questions about this item

Will the 150 mm depth fit my ATX case?

The unit is 150 mm deep, 140 mm wide and 86 mm high, so it fits any standard ATX chassis with at least 150 mm PSU clearance.

How do I connect the 16-pin cable for a PCIe Gen 5.0 graphics card?

Plug the native 16-pin cable directly into the GPU; no adapter is needed, and the fully modular board lets you leave unused cables out of the case.

When should I clean or replace the 120 mm hydraulic bearing fan?

Vacuum the fan intake every six to twelve months; the hydraulic bearing is rated for long life, but replace the fan if noise or vibration appears.

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