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Power supplies

GX III Gold 850 ATX 3.1 power supply

Model GX III Gold 850 ATX 3.1
Also listed as
MPX-8503-AFAG-EB

850 W power supply with 80 PLUS Gold certification and fully modular cables. It follows ATX 12V Ver. 3.1 and is cooled by a 135 mm HDB fan.

Rated power
850 W
Efficiency
80 PLUS Gold
Cables
Fully modular
Standard
ATX 12V Ver. 3.1
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Overview Specifications Media Compatibility Support
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Overview

Highlights

  • ATX 3.1 support with a 90-degree 12V-2x6 cable
  • 80 PLUS Gold certified
  • Titanium-level efficiency at light loads
  • Fully modular cables
  • 10-year warranty

Output and connectors

Rated output
850 W
Efficiency
80 PLUS Gold ≥90% @ Typical Load
Cabling
Modular
Standards
  • ATX 3.1
Connectors
  • 6 x 12V-2
Fan
135 mm
Protections
OPP, OVP, OTP, OCP, SCP, UVP, Surge & Inrush Protection
AC input
100 to 240V

At a glance

Wattage
850 W
Efficiency
80 Plus Gold
Cabling
Modular
Full specifications

Specifications

General

Model number
MPX-8503-AFAG
Series
GX Series
Form factor
ATX
ATX version
ATX 12V Ver. 3.1
Modular
Fully Modular
Dimensions (L x W x H)
160 x 150 x 86 mm
Warranty
10 Years

Power

Rated power
850 W
PFC
Active PFC
Input voltage
100-240V
Input current
10-5A
Input frequency
50-60Hz
Efficiency
≥90% @ Typical Load
80 PLUS rating
80 PLUS Gold
ErP 2014 Lot 3
Yes
Power good signal
100-150 ms
Hold-up time
≥ 16ms

Connectors

ATX 24 Pin
1
EPS 4+4 Pin
1
EPS 8 Pin
1
SATA
8
Peripheral 4 Pin
4
PCI-e 6+2 Pin
3
12V-2x6
1

Cooling

Fan size
135mm
Fan bearing
HDB
Fan speed
1900 RPM

Reliability and compliance

MTBF
>100,000 Hours
Operating temperature
0-50°C
Protections
OPP/ OVP/ OTP/ OCP/ SCP/ UVP/ Surge & Inrush Protection
Regulatory
cTUVus, TUV, CE, FCC, BSMI, CCC, EAC, RCM, UKCA, RoHS2.0 / BIS, KC (Based on region's requests.)

Specifications are taken from the manufacturer's published information and may change. Confirm critical values with our sales desk before ordering.

Cooler Master product page

Media

Photos 4

Downloads

Official information

Cooler Master product page for GX III Gold 850 ATX 3.1 coolermaster.com

Compatibility

Graphics cards

Cards whose recommended power supply is 850 W or less, per the card specifications.

All 68 graphics cards

Cabinets

Cabinets whose specifications list a standard ATX power supply mount.

All 10 cabinets

Parts to plan with this power supply

Check sockets, memory type, power connectors and dimensions against the specifications before ordering, or ask our sales desk to confirm a build.

Support

Warranty and repairs

Warranty is as per Cooler Master’s terms for this model. For products bought from us, call our service team with the invoice number, the model and the product’s serial number.

From Cooler Master

Practical notes

  1. Do not mix modular cables between different power supply models.
  2. Check the PCIe and CPU power connectors your build needs.

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Cooler Master GX III Gold 850 ATX 3.1 1 / 4