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Black rectangular ATX power supply with a 120 mm fan grille and fully modular cable sockets

Montech

Montech Century G5 850 power supply

SKU CH-TA4Q-4185M MPN Century G5 850

An ATX 3.0 and PCIe 5.0 ready 850 W unit with 80 PLUS Gold efficiency, a 120 mm FDB fan, full Japanese capacitors and fully modular cables

  • TypeIntel ATX12V
  • Maximum Power850 W
  • Fans1 x 120 mm (FDB Fan)
  • PFCActive PFC (>0.9 typical)
  • Main Connector20+4Pin
  • SATA Power Connector3

Options ATX 3.0 80+ Gold (850W)

  • 80 PLUS Gold efficiency reduces wasted energy with 90% typical performance
  • ATX 3.0 and PCIe 5.0 ready for modern graphics cards
  • Full-bridge LLC topology delivers stable voltage under load
  • Japanese 105°C capacitors ensure long-term reliability
  • 120 mm FDB fan provides quiet cooling at 150 mm depth

Power delivery for modern builds

The Montech Century G5 850 is an Intel ATX12V power supply rated at 850 W. It meets ATX 3.0 and PCIe 5.0 requirements and carries 80 PLUS Gold certification with 90% typical efficiency. A single 120 mm FDB fan provides cooling while the fully modular design keeps cable routing clean. Japanese 105°C capacitors and a full-bridge LLC topology with DC-DC conversion support stable output across the 100-240 V input range.

Suited for high-efficiency systems.

Builders who want Gold-level efficiency, PCIe 5.0 connectivity and quiet operation in a compact 150 mm chassis will find this unit a strong match. Systems that demand multiple 12VHPWR cables or sustained loads well beyond 850 W should look at higher-capacity platforms. The six integrated protections — OVP, OPP, OTP, SCP, OCP and UVP — cover standard safety needs for mainstream and enthusiast configurations alike.

The 12VHPWR connector decides compatibility

A single 12+4 pin PCIe 5.0 connector is included alongside two CPU 4+4 pin cables, two PCIe 6+2 pin cables, three SATA strings and one Molex string. If your graphics card requires the 12VHPWR interface, this supply connects it directly without adapters. If the build needs two such connectors, a different power supply is required.

Highlights

  • 80 PLUS Gold efficiency reduces wasted energy with 90% typical performance
  • ATX 3.0 and PCIe 5.0 ready for modern graphics cards
  • Full-bridge LLC topology delivers stable voltage under load
  • Japanese 105°C capacitors ensure long-term reliability
  • 120 mm FDB fan provides quiet cooling at 150 mm depth

Specifications

BrandMontech
ModelCentury G5 850
TypeIntel ATX12V
Maximum Power850 W
Fans1 x 120 mm (FDB Fan)
PFCActive PFC (>0.9 typical)
Main Connector20+4Pin
SATA Power Connector3
Max PSU Length150 mm
ModularFull Modular
Efficiency90% Typically
Energy-Efficient80 PLUS GOLD Certified
ProtectionOVP / OPP / OTP / SCP / OCP/ UVP
Input Voltage100 - 240 V
Input Frequency Range47 - 63 Hz
Input Current12A
Output+3.3V@20A, +5V@20A, [email protected] , [email protected] , [email protected]
ApprovalscTUVus / TUV / CB / CE / FCC / RoHS / BSMI
ConnectorsM/B 20+4Pin x 1
CPU 4+4Pin x 2
PCIE 6+2 x (2 Connectors)*2
SATA x (6 Connectors)*3
Molex 4Pin x (3 Connectors)*1
12+4PCIe 5.0 x 1
Features•80 PLUS GOLD Certified: Unlock the Efficiency
Unleash the power of CENTURY G5! With 80 PLUS GOLD certification, experience high efficiency that saves energy without compromising on ample power output. Whether it's gaming or any other task, trust CENTURY G5 to excel!
•PCIe 5.0 Ready: Unleash Unparalleled Gaming Performance
Unleash unparalleled gaming performance with the all-new CENTURY G5 series! Featuring PCIe 5.0 support and the revolutionary 12VHPWR port, power up your next-gen graphics card with unrivaled stability. Get ready to elevate your gaming experience!
•ATX 3.0 Ready: Un
Dimensions150*140*86mm
Weight3.165 lbs
Shipping weight2.86 kg
Package size305 × 229 × 127 mm

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Questions about this item

Will the 850 W unit work with my older motherboard that still uses a 20+4 pin main connector and dual 4+4 pin CPU cables?

Yes, the supply ships with a 20+4 pin motherboard cable and two 4+4 pin CPU cables, matching legacy boards while also providing a 12+4 pin PCIe 5.0 connector for newer graphics cards.

How can I verify the PSU is delivering stable power after installation?

Check that the 120 mm FDB fan spins quietly and monitor system voltages in BIOS or software; the unit’s 80 PLUS Gold rating and active PFC above .9 typical indicate it meets spec under load.

What cables come in the box and what must I source separately?

The package includes the 20+4 pin motherboard cable, two 4+4 pin CPU cables, two 6+2 pin PCIe cables, three SATA cables and one Molex cable; any extra SATA or PCIe cables beyond those counts are not included.

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