The COUGAR GEX X2 850W is a high-performance fully modular power supply designed for modern gaming PCs, enthusiast builds, and powerful GPU configurations. With 850W of rated output and a dedicated +12V rail delivering up to 850W, it provides a strong power foundation for demanding CPUs and graphics cards.


$98.00 
  • Brand: Cougar
  • SKU: GEX-X2-850
  • Shipping: 
  • Return Policy: We accept returns within 7 days of delivery for items that are unused, in their original packaging, and include all accessories. Some products may be non-returnable; please refer to the product page for specific details. To initiate a return, contact our Customer Support.


Product Description


Featuring 80 PLUS Gold efficiency with up to 91% power-conversion efficiency, the GEX X2 helps reduce wasted energy and heat while maintaining stable power delivery. Its native 12+4-pin 12VHPWR connection provides direct power connectivity for compatible PCIe 5.0-class graphics cards.

The PSU supports ATX 3.0 power-excursion requirements, including a tested 200% rated-power excursion for 100μs, helping it handle demanding transient power requirements from modern GPUs. Its fully modular cabling allows you to connect only the cables your system requires for cleaner cable management and improved airflow.

Cooling is handled by a 120mm Hydro Dynamic Bearing (HDB) fan with Smart Zero Fan operation. The fan remains stopped at lighter loads and activates when PSU load exceeds approximately 30%, helping maintain quieter operation during low and moderate workloads.

Built with 100% refined Japanese capacitors, tight 2% voltage regulation, a compact 140mm chassis, and six major electrical protection systems, the GEX X2 850W is an excellent choice for a reliable, clean, and modern gaming PC power platform.

Key Features

  • Brand: COUGAR
  • Model: GEX X2 850
  • Product Type: Fully Modular Gaming Power Supply
  • Color: Black
  • Rated Power: 850W
  • Efficiency Certification: 80 PLUS Gold
  • Maximum Claimed Efficiency: Up to 91%
  • PSU Standard: ATX 3.0
  • GPU Power Standard: PCIe 5.0-class support
  • Native GPU Connector: 12+4-Pin 12VHPWR
  • 12VHPWR Cable Length: 650mm
  • PCIe Support: Yes
  • +12V Rail: 70.8A
  • +12V Maximum Output: 850W
  • +3.3V Rail: 20A
  • +5V Rail: 20A
  • Combined +3.3V / +5V Power: 100W
  • -12V Rail: 0.3A / 3.6W
  • +5VSB: 3A / 15W
  • Main Motherboard Connector: 24-Pin (20+4)
  • CPU Power: 8-Pin / 4+4-Pin
  • Additional PCIe Power: 6+2-Pin PCIe
  • Cabling: Fully Modular
  • Cable Style: Flat Modular Cables
  • Cooling Fan: 120mm
  • Fan Bearing: Hydro Dynamic Bearing (HDB)
  • Smart Zero Fan: Yes
  • Zero-Fan Activation: Fan starts above approximately 30% load
  • Capacitors: 100% Refined Japanese Capacitors
  • Voltage Regulation: Up to 2%
  • ATX 3.0 Power Excursion: Supported
  • Maximum Excursion Test: 200% rated power / 100μs
  • MTBF: 100,000 Hours
  • Full-Performance Ambient Temperature: Up to 40°C
  • Input Voltage: 100–240V AC
  • Input Frequency: 50–60Hz
  • Protections: UVP, OCP, SCP, OVP, OTP & OPP
  • PSU Length: 140mm
  • Dimensions: 140 × 150 × 86mm
  • Net Weight: Approx. 1.6kg
  • Ideal For: Gaming PCs, high-performance desktops, enthusiast builds, modern NVIDIA/AMD GPU systems, workstation PCs and custom PC builds
  • Warranty: Not specified on the exact Expert-Zone listing