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
- 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.
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Overview
Specs
Reviews (210)
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
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
- This item is covered by Newegg.ca's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.
Manufacturer Contact Info
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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 compatible RTX 50-series or Radeon RX 90-series graphics card, use the native 12V-2x6 cable for a direct GPU power connection; check that the specific card and the rest of the system fit within the PSU’s 850W capacity.
- For a midrange gaming build in the RTX 5070 or Radeon RX 9070 class, the 850W Century II provides a modern ATX 3.1 power supply with a native GPU cable; Tom’s Hardware identifies this tier as a suitable fit for the unit.
- In a desktop used for light tasks or sitting idle, Smart Zero Fan mode can stop the PSU fan at low loads, reducing one source of fan noise; Tom’s Hardware also found the fan quiet during room-temperature testing.
- When assembling a PC and routing cables behind the motherboard tray, the fully modular design lets you connect only the cables the build needs, helping avoid unused PSU cables in the case.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Desktop builds needing an 850 W ATX power supply |
| Power Output | 850 W |
| Form Factor And Fit | ATX form factor with a maximum PSU length of 150 mm |
| Modular Design And Connectors | Fully modular, with a 20+4-pin main connector and 6+2-pin PCIe connectors; 20 PSU connectors listed |
| Cooling | Air-cooled by one 135 mm fan |
| Efficiency | 80 PLUS Gold certified |
| AC Input | 100–240 V AC, 50–60 Hz, 15–10 A |
| Appearance | Silver |
| Model Identifiers | Montech Century II 850; model number 17-959-008 |