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Silver modular ATX power supply with 135mm fan, flat cables, 650W rating

Montech

Montech Century ll 650W power supply

SKU CH-7P70-EEWJZ MPN Century ll 650W

A fully modular ATX 3.1 power supply delivering 650 W with 80 Plus Gold efficiency, 100 % Japanese capacitors, a 135 mm FDB fan with zero RPM mode and a 12V-2x6 cable for PCIe 5.1 graphics cards

  • Max wattage650 W
  • Modular cablingFull Modular
  • Main power connector20+4Pin
  • Efficiency certification80 PLUS GOLD Certified
  • Product colorSilver
  • Product typeATX 3.1 & PCIe 5.1

Model Century ll 650W

  • ATX 3.1 & PCIe 5.1 ready with 12V-2x6 cable for modern GPU support
  • 80 Plus Gold certified efficiency reduces waste heat and running costs
  • 100 % Japanese capacitors deliver long-term voltage stability
  • 135 mm FDB fan with zero RPM mode keeps noise low at light loads
  • Fully modular flat cables simplify cable management for a clean build

Montech Century II 650W ATX 3.1 PSU

This fully modular ATX 3.1 power supply delivers 650 W of continuous power with 80 PLUS Gold efficiency. It includes a native 12V-2x6 cable for PCIe 5.1 graphics cards and uses 100% Japanese capacitors for long-term reliability. A 135 mm FDB fan with zero RPM mode keeps noise low at light loads.

Suited for mid-range builds needing ATX 3.1

Gamers and builders moving to PCIe 5.1 GPUs will appreciate the included 12V-2x6 connector and Gold-rated efficiency. Systems that demand higher wattage for multi-GPU setups or extreme overclocking should consider a higher-capacity unit instead.

Check that 650 W meets your total system draw

The single deciding specification is the 650 W maximum output; if your CPU and GPU combined peak load approaches or exceeds this figure, the supply will not sustain stable operation.

How it compares

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

Price $57.99
Cheaper than about 87% of the 10,869 comparable items (median $142.99).
Max wattage 650 W
Lower than about 70% of the 930 comparable items (median 850 W).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameMontech
Model nameCentury II 650 W
Part numberCenturyll650w
Product colorSilver
Product typeATX 3.1 & PCIe 5.1
Power
Max wattage650 W
Modular cablingFull Modular
Main power connector20+4Pin
Efficiency certification80 PLUS GOLD Certified
Size & build
Product dimensions5.52 × 5.91 × 3.39 in
Product weight5.29 lb (2.4 kg)
Shipping weight2.36 kg
Package size300 × 216 × 117 mm

Other versions of this model

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Questions about this item

What are the exact dimensions and weight of the Montech Century II 650W for case clearance?

The unit measures 5.52 x 5.91 x 3.39 inches and weighs 5.29 lbs, so verify your case allows at least that depth and height.

How do I install the fully modular cables and what step is often missed with the 12V-2x6 connector?

Plug only the cables you need into the PSU sockets; for the 12V-2x6 lead, ensure the plug seats fully into both the power supply and the graphics card until the latch clicks.

When will the 135 mm FDB fan need attention and what protections guard long-term reliability?

The Fluid Dynamic Bearing fan is rated for long life; clean dust from the grille periodically. OCP, OVP, UVP, SCP, OTP and OPP circuits protect components continuously.

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