Skip to main content
  • $89.90
  • Free 30-day Returns
  • Add to PC build list 
    Sold by Newegg

    Shipped by Newegg

    Price alert
    Newegg PC Builder
    Shop it at NeweggBusiness.

    MONTECH CENTURY II - 850W High-End ATX Gaming Power Supply - 80 Plus Gold & Cybenetics Platinum - Fully Modular - ATX 3.1 & PCIe 5.1 Ready with 12V-2x6 Cable - 10 Years Warranty

    Save even more w/ combo, limited offer

    • 1200W
    • 1050W
    • 850W
    • Century ll 550W
    • Century ll 650W
    • Century ll 750W
    • Compatible with Latest Platforms: ATX 3.1 & PCIe 5.1 ready, featuring a 12V-2x6 cable.
    • Efficiency Certificates: 80 Plus Gold and Cybenetics Platinum certified.
    • Reliable Components: Equipped with 100% Japanese capacitors.
    • Optimized Ventilation: Includes 135mm FDB silent fan with zero RPM mode.
    • Signature of Design: MONTECH's signature design in silver matellic appearance.
    • Protection and Reliability: equipped OCP, OVP, UVP, SCP, OTP, and OPP with 10-year warranty.
    🔥Don't forget your OS, we have Windows 11 OEM, Download and USB versions available
    +
    +
    Overview
    Specs
    Reviews (210)
    See all Q & A

    Any questions? Ask CelesteSM will help you find out quickly.

    Hero Image
    A Signature of Montech Innovation
    All Time Peak Efficiency
    80 Plus & Cybenetics Platinum
    First-Class Gear Support: 12V-2x6 Cable
    Modern Power for the Future
    Precise Power Architecture in Operation
    Connectors
    Reliability from Start to Finish
    Efficient Cooling, Quiet Performance
    Ultimate Protection: Guaranteed for 10 Years

    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Limited Warranty period (parts): 5 years
    • Limited Warranty period (labor): 5 years
    • Read full details

    Return Policies

    LOADING...
    LOADING...

    The MONTECH CENTURY II 850 is a fully modular 850W ATX power supply with ATX 3.1 and PCIe 5.1 support, suited to gaming PC builders who want a 12V-2x6 cable for compatible modern graphics cards.

    Recommended For

    • Builders putting together a modern gaming PC with a mid-range to upper-mid-range graphics card who want a native 12V-2x6 cable for compatible newer GPUs.
    • Value-conscious PC builders who want a fully modular 850W ATX 3.1 power supply, Cybenetics Platinum efficiency certification, and a 10-year warranty without choosing a higher-priced premium model.
    • Desktop users who prefer low fan noise during lighter workloads: testing found the fan can remain stopped at low loads and quiet in a typical room-temperature setup.
    • PC builders upgrading from an older power supply who want a current-generation GPU cable and fully modular cabling for a new build or refresh.

    Real-World Use Scenarios

    • When building a gaming PC with a graphics card that uses a 12V-2x6 power input, the included native cable provides a direct connection without relying on a separate adapter; check the GPU maker’s recommended PSU wattage and the full system’s power needs before choosing 850W.
    • During everyday desktop use or lighter workloads, Smart Zero Fan mode can keep the PSU fan stopped at low loads, reducing one source of noise; other PC fans may still be audible.
    • When assembling or upgrading a PC, the fully modular cables let builders connect only the leads their components need, helping reduce unused cable clutter in the case.
    • For a gaming or creator PC whose components fit within an 850W power budget, this unit provides one PSU for the CPU, graphics card, and other system parts; verify the total load and connector requirements for the exact build.
    • When replacing a PSU in a compact ATX build, its 150 mm length may suit cases with limited PSU space, but builders should confirm the case’s clearance and cable-bending room before installation.

    Spec Summary

    AttributeValue
    Best ForDesktop builds needing an 850 W ATX power supply
    Power Output850 W
    Form Factor And FitATX form factor with a maximum PSU length of 150 mm
    Modular Design And ConnectorsFully modular, with a 20+4-pin main connector and 6+2-pin PCIe connectors; 20 PSU connectors listed
    CoolingAir-cooled by one 135 mm fan
    Efficiency80 PLUS Gold certified
    AC Input100–240 V AC, 50–60 Hz, 15–10 A
    AppearanceSilver
    Model IdentifiersMontech Century II 850; model number 17-959-008