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Silver ATX power supply unit with matte finish and modular cable ports

Montech

Montech Century II 1200 power supply

SKU CH-H3X8-6J5P3 MPN Century II 1200

Delivers 1200 W through a fully modular ATX 3.1 design with 80 Plus Gold and Cybenetics Platinum efficiency, Japanese capacitors, a 135 mm FDB fan with zero-RPM mode.

  • Max wattage1200 W
  • Modular cablingFull Modular
  • Fan configuration1 × 135 mm
  • Main power connector20+4Pin
  • PCIe power connectors6 × 6+2-Pin
  • SATA power connectors12

Model 1200W

  • 1200 W output powers demanding multi-GPU builds
  • ATX 3.1 and PCIe 5.1 ready with 12V-2x6 cable
  • 80 Plus Gold and Cybenetics Platinum efficiency reduces waste heat
  • Full modular cabling with 6 PCIe and 12 SATA connectors
  • 135 mm FDB fan with zero RPM mode for silent idle

1200 W ATX 3.1 power supply for high-end builds

The Montech Century II 1200 delivers 1200 W of continuous power through an ATX 3.1 compliant design. It targets enthusiasts building systems with modern graphics cards and multi-drive arrays. Full modular cabling keeps the interior tidy and airflow unimpeded.

Sustained load behaviour

Dual efficiency certifications confirm low waste heat during extended gaming or rendering sessions. The 135 mm fluid-dynamic-bearing fan spins up only when needed, thanks to a zero RPM mode at light loads. Japanese capacitors on every rail maintain stable voltages under prolonged 100 A draw on the 12 V line.

Compatibility checks before ordering

Verify that your case accepts a unit up to 150 mm deep and provides clearance for the 135 mm fan exhaust. Ensure the motherboard has a 20+4 pin main socket and that your graphics cards can use the supplied 12V-2x6 or six 6+2 pin PCIe cables. Count SATA devices against the twelve available connectors.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $117.99
Cheaper than about 60% of the 10,869 comparable items (median $142.99).
Max wattage 1200 W
Higher than about 90% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameMontech
Model nameCentury II 1200
Product colorSilver
Product typeATX / ATX 3.1
Ports & slots
PCIe power connectors6 × 6+2-Pin
SATA power connectors12
Output typeDC Output: +3.3 V +5 V +12 V -12 V +5VSB
Max. Output Current: 20A 20A 100A 0.3A 3A
Max. Output Power: 120 W 1200 W 3.6 W 15 W
Power
Max wattage1200 W
Modular cablingFull Modular
Main power connector20+4Pin
Efficiency certification80 PLUS GOLD Certified
Rated input current100-240Vac 50-60 Hz 15A-10A
Size & build
Shipping weight2.95 kg
Package size297 × 226 × 124 mm
Compatibility
PSU length limit150 mm
More details
Fan configuration1 × 135 mm

Other versions of this model

5 more in the same range

Questions about this item

How loud does the 135 mm fan get when the 1200 W unit runs all day?

The 135 mm FDB fan includes a zero RPM mode that stops the blades at low loads, keeping noise near silent during typical use.

Which cables must I already have to connect the 6 x 6+2-Pin PCIe and 12 SATA connectors?

The supply is fully modular, so every PCIe and SATA cable ships in the box; no extra cables are required.

Will the ATX 3.1 design and 150 mm length fit my older case and motherboard?

The 150 mm depth matches standard ATX bays, and the 20+4 pin main connector works with legacy boards while the 12V-2x6 cable supports newer GPUs.

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