COUGAR GEX PRO 850W Fully Modular ATX 3.1 Power Supply — 80 PLUS Gold, PCIe 5.1 12V-2X6, 91% Cybenetics Gold Efficiency, 120mm Rifle-Bearing Fan, Japanese Capacitor, 140mm Compact Design, Black

118 $

Expert Features

  • ATX 3.1 Power Architecture : Built for current and next-generation systems, with the transient-load resilience required by demanding GPUs and multi-core processors.
  • Native PCIe 5.1 GPU Power : A dedicated 12V-2X6 connector feeds compatible next-generation graphics cards through one direct 12+4-pin cable without requiring a 6+2-pin adapter.
  • Published Power-Excursion Performance : COUGAR lists 850W-model test results of 1,500W for 100μs, 1,350W for 1ms, 1,200W for 10ms, and 900W for 100ms under ATX 3.1 dynamic-load criteria.
  • 80 PLUS Gold Efficiency : Reaches up to 91% conversion efficiency, reducing wasted electricity and heat while delivering stable power—yalla, more energy for the build and less for the bill.
  • Cybenetics Gold and A+ Ratings : The 850W model carries a Cybenetics Gold efficiency rating and A+ noise rating for independently evaluated electrical and acoustic performance.
  • 120mm Hydro-Dynamic-Bearing Fan : COUGAR’s HDB design reduces friction and vibration for greater durability, quieter operation, and efficient cooling.
  • Grooved Stabilized Fan Blades : An integrated stabilizing ring minimizes blade flex and turbulence, improving airflow smoothness without unnecessary noise drama.
  • Fully Modular Cable System : Install only the cables your build needs to reduce clutter, improve airflow, and make installation or future upgrades cleaner.
  • Compact 140mm Chassis : One of COUGAR’s most compact fully modular PSU designs, fitting a wide range of cases while leaving more space for routing and components.
  • Tight 2% Voltage Regulation : Refined regulation keeps output exceptionally stable for sensitive, high-performance PC hardware.
  • 105°C Japanese Standby Capacitors : Durable Japanese capacitors support stable standby power delivery and long-term electrical reliability.
  • 100,000-Hour MTBF : Engineered for extended service life in gaming, workstation, and performance-focused systems.
  • Reliable Operation at 40°C : Designed to maintain dependable output at ambient operating temperatures reaching 40°C.
  • Complete Electrical Protection : UVP, OCP, SCP, OVP, OTP, and OPP respond automatically to voltage faults, excess current, short circuits, overheating, and overloads.
  • Embossed Black Styling : A black enclosure and embossed black modular cables keep the power section controlled, tidy, and visually locked into serious builds.

The COUGAR GEX PRO 850W and COUGAR GR 850W are both 80 PLUS Gold certified, fully modular ATX 3.1 power supplies that support PCIe 5.1 graphics cards with native 12+4 pin connectors.

Key Differences

  • Efficiency & Noise Ratings (Cybenetics):
    • GEX PRO 850W: Achieves a Cybenetics Gold efficiency rating and an A+ noise level rating.
    • GR 850W: Reaches a higher Cybenetics Platinum efficiency rating for the 850W model, with an A- noise level rating. 

  • Cooling Fan & Bearings:
    • GEX PRO 850W: Uses a Hydro Dynamic Bearing (HDB) fan featuring a grooved blade design built for ultra-quiet operation.
    • GR 850W: Uses a rifle bearing fan with a grooved blade design. 

  • Capacitors:
    • GEX PRO 850W: Features 105°C Japanese capacitors specifically for standby power.
    • GR 850W: Features a 105°C Japanese capacitor for the main power line. 

  • Form Factor:
    • GEX PRO 850W: Features a compact 140 mm length for better case compatibility.

 Expert Specs

Specification Official Detail
Brand COUGAR
Product Series GEX PRO
Model Name GEX PRO 850
Manufacturer Model Code CGR GEXP-850
Product Number 31GP085001P01
Color Black
Rated Power 850W
PSU Standard Intel ATX 3.1
GPU Power Standard PCI Express 5.1
Native GPU Connector One 12V-2X6, 12+4-pin connector
12V-2X6 Cable Length 650mm
Dynamic Power Excursion Designed for true 200% excursion capability
100μs Published Excursion Test 1,500W
1ms Published Excursion Test 1,350W
10ms Published Excursion Test 1,200W
100ms Published Excursion Test 900W
Efficiency Certification 80 PLUS Gold
Maximum Conversion Efficiency Up to 91%
Cybenetics Efficiency Rating Gold; 750W and 850W models
Cybenetics Noise Rating A+; 750W and 850W models
Cabling Fully modular, embossed black cables
Cooling Fan 120mm grooved-blade fan with stabilizing ring
Fan Bearing Hydro Dynamic Bearing (HDB)
Standby Capacitors 105°C Japanese capacitors
Voltage Regulation Tight 2% regulation
MTBF 100,000 hours
Operating Temperature +10°C to +40°C
Storage Temperature -40°C to +70°C
Operating Humidity 20%–85% relative humidity, non-condensing
Storage Humidity 5%–95% relative humidity, non-condensing
AC Input 100–240V AC, 50–60Hz, 12–6A
+3.3V Rail 20A
+5V Rail 20A
Combined +3.3V and +5V Output 100W
+12V Rail 70.8A / 849.6W
-12V Rail 0.3A / 3.6W
+5Vsb Rail 3A / 15W
Total Output 850W
Mainboard Connector 1 × 24-pin (20+4)
CPU Connectors 2 total: 8-pin (4+4) and 8-pin
Peripheral Connectors 3
SATA Connectors 8
12V-2X6 Connectors 1 × 12+4-pin
PCIe Connectors 3 × 8-pin (6+2)
Protection Systems UVP, OCP, SCP, OVP, OTP, and OPP
Dimensions Without Packaging 140 × 150 × 86mm
Net Weight 2.18kg
Packaging Dimensions 330 × 215 × 107mm
Gross Weight 2.19kg
EAN 4710483778674
UPC 192554008547
JAN 4541995039157

Features & Compatibility

CGR-GEXP-850

COUGAR GEX PRO 850W FULLY MODULAR PSU 80+GOLD ATX3.1 PCIE5.1

COUGAR GEX PRO 850W Fully Modular ATX 3.1 Power Supply — 80 PLUS Gold, PCIe 5.1 12V-2X6, 91% Cybenetics Gold Efficiency, 120mm Rifle-Bearing Fan, Japanese Capacitor, 140mm Compact Design, Black


850W, ATX 3.1, PCIe 5.1, native 12V-2X6, 80 PLUS Gold up to 91%, Cybenetics Gold efficiency, Cybenetics A+ noise, 70.8A / 849.6W +12V rail, fully modular, 120mm HDB fan, 140mm compact length, 105°C Japanese standby capacitors, ±2% voltage regulation, 100,000-hour MTBF, 40°C operation, 3× PCIe 6+2-pin, 8× SATA, and full UVP/OCP/SCP/OVP/OTP/OPP protections.


  • Power Output: 850 Watts
  • Efficiency: Up to 91% conversion efficiency (80 PLUS Gold)
  • Standard: Intel ATX 3.1 with a native 12V-2×6 (12+4 pin) PCIe connector for modern graphics cards
  • Rail: Single +12V rail delivering up to 70.8A (849.6W)
  • Cooling: 120mm Hydro Dynamic Bearing (HDB) fan for low noise and durability
  • Build: Fully modular design with 105°C Japanese capacitors
  • Dimensions: 140 mm × 150 mm × 86 mm
  • Protections: OCP, OPP, OVP, UVP, SCP, and OTP