Montech Century II 80 PLUS GOLD & Cybenetics Platinum Fully Modular ATX 3.1 PCIe 5.1, 850W Power Supply

MONTECH Century II 850W – Premium Fully Modular ATX 3.1 PSU for Modern Builds

The Century II 850W is a high-end power supply designed for modern gaming rigs, creator workstations and up-gradable PCs. With full support for the ATX 12V v3.1 standard, PCIe 5.1 decking, premium build quality, and a long 10-year warranty, it offers both performance and future-proofing in one package.

Key Specifications

Output Power: 850 W

Efficiency Certification: 80 PLUS Platinum / Cybenetics Platinum

Form Factor: ATX (150 × 140 × 86 mm)

Fan: 135 mm Fluid Dynamic Bearing with Smart Zero-Fan mode

Modular Design: Fully modular cables, flat profile

Compatibility: ATX 12V v3.1, PCIe 5.1 ready

Notable Cable: 1 × 12V-2x6 (16-pin) connector for next-gen GPUs

Safety Protections: OPP, OVP, UVP, SCP, OCP, OTP

Warranty: 10 years

Ideal For: High-end gaming builds, creator workstations, GPU-intensive systems

Efficiency, Architecture & Reliability

Certified for ultra-high efficiency (80 PLUS Platinum / Cybenetics Platinum testing), this unit supports peak efficiencies that minimize wasted power and heat while delivering stable output under heavy loads. It uses a refined architecture featuring Active PFC, Half-Bridge LLC with DC-to-DC conversion, and is built with 100% Japanese capacitors—ensuring smooth voltage regulation and optimal long-term reliability.

Features & Modular Design

Fully modular cables provide clean aesthetics and easier builds while the flat, flexible cable design simplifies routing behind motherboards or in cable-management channels. A large 135 mm fluid dynamic bearing fan helps keep noise levels low and thermal performance strong, with smart zero-fan mode under light loads for near-silent operation. The inclusion of a new 12V-2x6 “16-pin” cable ensures compatibility with next-gen GPUs and high-performance platforms.

Compatibility & Safety

With ATX 3.1 and PCIe 5.1 readiness, the Century II 850W supports upcoming GPU architectures and builds that demand high transient responses (surges). Protection features are comprehensive and industrial-grade: Over Voltage Protection (OVP), Under Voltage Protection (UVP), Over Current Protection (OCP), Over Power Protection (OPP), Short Circuit Protection (SCP), and Over Temperature Protection (OTP) are all included. Backed by the long 10-year warranty, it's clearly aimed at serious users who value durability.

Why Choose the Century II 850W

If you're building or upgrading a system with a powerful GPU, next-gen CPU, or you're planning future expansions, the Century II 850W offers robustness, cutting-edge compatibility, and long-term peace of mind. With high efficiency, quiet operation and modular flexibility, it stands out as a serious choice for demanding PC builds.