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White ATX power supply unit with fully modular cables and a 120mm fan grille

GIGABYTE

GIGABYTE GP-UD850GM PG5W 850W ATX 3.0 power supply

SKU CH-HSYX-9WKBV MPN GP-UD850GM PG5W

Fully modular ATX 3.0 unit delivers 850 W with a native 16-pin PCIe 5.0 cable for up to 600 W GPU power, 80 Plus Gold efficiency and Japanese capacitors in a 150 mm chassis

  • Max wattage850 W
  • Power efficiency90% at typical load
  • Modular cablingFull Modular
  • Fan configuration120 mm Hydraulic Bearing(HYB)fan
  • Power factor correctionActive
  • Main power connector20+4Pin
  • 850 W single +12 V rail powers demanding builds
  • Native 16-pin cable delivers up to 600 W to PCIe 5.0 graphics cards
  • 80 Plus Gold certification reaches 90 % efficiency at typical load
  • Fully modular design with Japanese capacitors keeps cabling tidy and reliability high
  • 120 mm hydraulic bearing fan and full protection suite maintain stable, quiet operation

850W ATX 3.0 power supply

This fully modular unit delivers 850 watts on a single +12V rail and meets the Intel ATX 3.0 design guide. It is built for PCIe Gen 5.0 graphics cards and includes a native 16-pin connector rated for 600 watts. The 80 Plus Gold rating guarantees 90 percent efficiency at typical load. Japanese capacitors and a 120mm hydraulic bearing fan complete the package.

Fully modular cabling and compact 150mm depth

All cables detach so only the needed leads stay in the case, easing routing in tight builds. The 150mm length fits most standard ATX chassis without interfering with drive cages. The 16-pin PCIe 5.0 cable is included in the box, removing the need for adapters. Protection circuits cover over-voltage, over-power, short-circuit, under-voltage, over-current and over-temperature events.

Single-rail 850W with 200 percent excursion headroom

The platform sustains up to 2x total power excursion and 3x GPU excursion, absorbing transient spikes from modern graphics cards. Eight SATA connectors and three peripheral plugs handle multiple drives and accessories. Dual EPS 4+4-pin cables support high-end motherboards. The 100,000-hour MTBF rating reflects the Japanese capacitor quality and hydraulic fan durability.

How it compares

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

Price $114.99
Cheaper than about 61% 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 PG5 W
Product typeATX12 V
Ports & slots
PCIe power connectors1 × 16-Pin, 4 × 6+2-Pin
SATA power connectors8
Connection typesATX/MB 20+4 Pin x 1
EPS/ATX 12 V 4+4pin x 2
PCI-e 6+2 pin x 4
PCI-e 16 pin x 1
SATA 5 pin x 8
Peripheral 4-pin x 3
Floppy 4-pin x 1
Power
Max wattage850 W
Power efficiency90% at typical load
Modular cablingFull Modular
Power factor correctionActive
Main power connector20+4Pin
Efficiency certification80 PLUS GOLD Certified
Built-in protectionOVP/OPP/SCP/UVP/OCP/OTP
Supply voltage100-240 Vac (full range)
AC input frequency50/60 Hz
Rated input current12A-6A
Size & build
Product dimensions140 × 150 × 86 mm
Shipping weight2.70 kg
Package size254 × 210 × 121 mm
Compatibility
PSU length limit150 mm
Environment & compliance
Regulatory approvalsBSMI/CE/CCC/FCC/TUV/RCM/CB/EAC/KCC/UL/PSE
More details
Fan configuration120 mm Hydraulic Bearing(HYB)fan
Mean time between failures>100,000 h

Questions about this item

How can I confirm the PSU is operating correctly once installed?

The 120 mm hydraulic bearing fan will spin and the system will power on; 80 Plus Gold certification means 90 percent efficiency at typical load, and the unit meets ATX 3.0 timing standards.

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

The box supplies a fully modular cable set: one 20+4 pin ATX, two 4+4 pin EPS, four 6+2 pin PCIe, one native 16 pin PCIe 5.0 cable, eight SATA, three peripheral 4-pin and one floppy 4-pin; no extra cables are required for standard builds.

Should I choose this 850 watt model or a different capacity for a PCIe 5.0 graphics card?

This 850 watt unit delivers a single +12 V rail, handles 600 watts through the 16 pin connector and sustains 2x total power excursion per ATX 3.0, making it suitable for most PCIe 5.0 GPUs.

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