Cooler Master GX III Gold 1250W – ATX 3.0, 80 PLUS Gold, Fully Modular, 90% Efficiency, 135mm FDB Fan, 12VHPWR (600W), and Comprehensive Protections | 12999 EGP

Cooler Master GX III Gold 1250W ATX 3.0 80 PLUS Gold Fully Modular 90 Efficiency 135mm FDB Fan 12VHPWR 600W and Comprehensive Protections

12999 LE
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Cooler Master GX III Gold 1250 | High-Performance PSU with a Sleek Design

Cooler Master introduces the GX III Gold series, featuring a half-bridge APFC, LLC, and DC-DC design, along with an STCM zero-rotation fan for optimal performance.

Strength in Elegance

The GX III Gold is engineered for exceptional efficiency, low noise levels, and superior reliability, ensuring stable power delivery for high-performance systems.

Innovative, Streamlined Design

A refined design enhances both aesthetics and airflow, optimizing cooling efficiency.

ATX 3.0 Support & 90-Degree 12VHPWR Cable

  • Fully compliant with ATX 3.0 standards.
  • Includes a high-durability 90-degree 12+4 pin (12VHPWR) PCIe 5.0 connector, capable of delivering up to 600W to your GPU while improving safety and electrical reliability.

Advanced Cooling & Efficiency

  • Anodic-Coated Heat Sink – Enhances thermal performance.
  • 90% Efficiency – Ensures minimal power loss and heat generation.
  • Zero-RPM Mode – Smart thermal control keeps the fan off under low loads, reducing noise.

Fully Modular Cabling

A modular design minimizes cable clutter, improves airflow, and enhances thermal performance.

Cooler Master GX III Gold 1250W – Specifications

General Information

  • Model: MPX-C503-AFAG
  • Series: GX Series
  • Category: Above 750W
  • Form Factor: ATX
  • ATX Version: ATX 12V Ver. 3.0
  • Wattage: 1250W
  • 80 PLUS Certification: 80 PLUS Gold

Electrical Specifications

  • PFC: Active PFC
  • Input Voltage: 100-240V
  • Input Current: 15-7A
  • Input Frequency: 50-60Hz
  • Efficiency: ≥90% @ Typical Load

Cooling System

  • Fan Size: 135mm
  • Fan Bearing: FDB (Fluid Dynamic Bearing)
  • Fan Speed: 2300 RPM
  • Zero-RPM Mode: Yes (Smart Thermal Control)

Physical Dimensions

  • Dimensions (L x W x H): 160 x 150 x 86 mm

Environmental & Reliability

  • Operating Temperature: 0-50°C
  • MTBF: >100,000 Hours
  • Power Good Signal: 100 - 150 ms
  • Hold Up Time: ≥16ms

Protection Features

  • Safety Protections: OPP, OVP, OTP, OCP, SCP, UVP, Surge & Inrush Protection

Connectors

  • ATX 24-Pin: 1
  • EPS 4+4 Pin: 1
  • EPS 8 Pin: 1
  • PCI-e 6+2 Pin: 3
  • 12VHPWR Connector: 1 (90-degree 12+4 pin PCIe 5.0)
  • SATA Connectors: 12
  • Peripheral 4-Pin Connectors: 4

Certifications & Compliance

  • Regulatory Approvals: cTUVus, TUV, CE, FCC, BSMI, CCC, EAC, RCM, UKCA, RoHS2.0 / BIS, KC (Region-specific compliance)
  • ErP 2014 Lot 3: Yes

Modular Design

  • Cable Management: Fully Modular
CategoryDesktop
SubcategoryPower Supply
BrandCOOLER MASTER
Model MPX-C503-AFAG