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Rectangular black ATX power supply with gold certification badge, modular cable ports, and 135mm fan grille visible

GIGABYTE

GIGABYTE GP-AP850GM AORUS P850W 850W power supply

SKU CH-9SGP-9WTMM MPN GP-AP850GM

Fully modular 850 W ATX supply with 80 PLUS Gold efficiency and a 135 mm double ball bearing fan

  • Max wattage850 W
  • Power efficiency90% at typical load
  • Modular cablingFull Modular
  • Fan configuration1 × 135 mm Double ball bearing fan
  • Power factor correctionActive
  • Main power connector20+4Pin

Model ATX 80+ Gold (850W)

  • 850 W output powers demanding builds
  • 80 PLUS Gold certification delivers 90% typical efficiency
  • Fully modular cabling keeps the interior tidy
  • 135 mm double ball bearing fan with stop function runs quietly
  • Comprehensive OVP OPP SCP UVP OCP OTP protection safeguards components

AORUS P850W 850W ATX power supply

The AORUS P850W is a fully modular ATX 12V v2.31 unit rated for 850 W maximum output. It targets builders who need reliable delivery for high-performance desktop systems. The single +12V rail design simplifies cable planning for demanding graphics cards and CPUs. Full modularity lets you connect only the cables your build requires.

160mm depth with double ball bearing fan

At 160 mm long the chassis fits standard ATX bays while housing a 135 mm double ball bearing fan. The fan includes a stop function that halts rotation at low load for silent operation. Six PCIe 6+2-pin connectors and six SATA power plugs support multiple GPUs and storage drives. Two CPU 4+4-pin cables and a 20+4-pin motherboard connector cover modern platform needs.

80 PLUS Gold efficiency and protection suite

80 PLUS Gold certification guarantees 90 percent efficiency at typical 50 percent load, reducing waste heat and electricity cost. Active PFC corrects power factor across the 100 to 240 V input range. A comprehensive protection set includes OVP, OPP, SCP, UVP, OCP and OTP. Hold-up time exceeds 16 ms at full load on 115 V, and MTBF is rated beyond 100000 hours.

How it compares

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

Price $144.99
Typical for this category: the median of 10,869 items is $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
Product lineAORUS P850 W
Model nameGP-AP850GM
Product typeATX 12 V v2.31
Ports & slots
PCIe power connectors6 × 6+2-Pin
SATA power connectors6
Output type+3.3 V@20A, +5 V@20A
Connection types1 x ATX/MB 20+4 Pin
2 x CPU/EPS 4+4 Pin
6 x PCI-e 6+2 Pin
6 x SATA
5 × 4 Pin Peripheral
2 × 4 Pin Floppy
Power
Max wattage850 W
Power efficiency90% at typical load
Modular cablingFull Modular
Power factor correctionActive
Main power connector20+4Pin
12V railsSingle
Power good signal100-500 ms
Power hold-up time> 16m sec at full load (115 V)
Efficiency certification80 PLUS GOLD Certified
Overvoltage protectionOVP / OPP / SCP / UVP / OCP / OTP
Supply voltage100–240 V
AC input frequency50–60 Hz
Rated input current12A - 6A
Size & build
Product dimensions3.39 in × 5.91 in × 6.3 in
Shipping weight3.23 kg
Package size348 × 213 × 147 mm
Compatibility
PSU length limit160 mm
More details
Fan configuration1 × 135 mm Double ball bearing fan
Mean time between failures>100,000 h

Other versions of this model

1 more in the same range

Questions about this item

What does the ATX 12V v2.31 standard mean for the maximum power this unit can deliver?

The unit complies with ATX 12V v2.31 and is rated for a maximum output of 850 W, so that is the practical ceiling for sustained load.

How much clearance does the 160 mm length require inside the case?

The power supply measures 160 mm long, so the case must provide at least that much depth behind the motherboard tray for a proper fit.

How do you install the fully modular cables, and which step is most often missed?

Connect only the cables your build needs — 20+4-pin motherboard, two 4+4-pin CPU, up to six 6+2-pin PCIe, six SATA, five 4-pin peripheral and two floppy — then route and secure them; the step most often missed is leaving unused cables in the box instead of plugging them in.

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