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Black rectangular ATX power supply unit with 120mm fan and sleeved cables

Corsair

Corsair CX650 650 W ATX power supply

SKU CH-9H1A-25TBH MPN CX650

ATX power supply delivering 650 W with 80 PLUS Bronze efficiency up to 88 percent and a 120 mm low-noise fan in a compact 125 mm case

  • Max wattage650 W
  • Fan configuration1 × 120 mm
  • PSU length limit125 mm
  • Efficiency certification80 PLUS BRONZE Certified
  • Supply voltage100–240 V
  • AC input frequency47–63 Hz
  • 80 PLUS Bronze certified efficiency reaches up to 88%
  • 120 mm thermally controlled fan runs quietly at low loads
  • Compact 125 mm casing fits almost all modern cases
  • 650 W continuous power guaranteed across the full output range
  • Black sleeved cables and powder-coated body match any build style

Power for mid-range builds

The Corsair CX650 is a 650 W ATX power supply built for mainstream desktop systems. It delivers continuous rated output across the +12 V rail at 52 A and holds 80 PLUS Bronze certification with up to 88% efficiency. The unit accepts 100–240 V input at 47–63 Hz.

Compact 125 mm casing fits modern cases

At 125 mm long the supply sits comfortably in most current chassis without blocking drive bays or long graphics cards. A single 120 mm thermally controlled fan runs quietly at light loads and ramps only under heavy stress. Fixed black-sleeved cables include one 24-pin ATX, one 4+4-pin EPS, two 6+2-pin PCIe, three SATA and two PATA connectors.

Included accessories simplify assembly

The retail box supplies a mains power cord, four mounting screws and reusable cable ties. These items let you secure the unit and route cables neatly without extra purchases. The fixed cable set covers typical single-GPU configurations with multiple drives; builders needing additional PCIe or SATA leads will need separate adapter cables.

How it compares

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

Price $92.99
Cheaper than about 70% 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).

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Specifications

Product
Brand nameCORSAIR
Product lineCX series
Model nameCX650
Part numberCP-9020278-NA
Product typeATX
Ports & slots
Output type+3.3 V@24A, +5 V@20A, +12 V@52A, +5VSB@3A
Connection types1x ATX Cable (24-PIN) (24)
1x EPS/ATX12 V Cable (8-PIN) (4+4)
2x PCI-E Cable (8-PIN) (6+2)/(6+2)P
3x SATA CABLE (3 SATA)
2x PATA CABLE (2PATA)
Power
Max wattage650 W
Efficiency certification80 PLUS BRONZE Certified
Supply voltage100–240 V
AC input frequency47–63 Hz
Rated input current10A-5A
Size & build
Product dimensions4.92 × 5.91 × 3.39 in
Product weight4.18 lb (1.9 kg)
Compatibility
PSU length limit125 mm
In the box
Included itemsCX650 Power Supply | Power Cord | Mounting Screws | Cable Ties
More details
Fan configuration1 × 120 mm

Questions about this item

At what load does the 120 mm fan spin up to high speed?

The 120 mm thermally controlled fan only spins at high speed when the power supply is under heavy stress, slowing down for quieter operation at lower loads.

How much heat does the unit produce when running continuously at full output?

80 PLUS Bronze certification means up to 88% efficiency, so roughly 12% of the 650 W draw becomes waste heat during sustained full-load operation.

Which motherboard power connector is included for the CPU?

One EPS/ATX12V cable with an 8-pin (4+4) connector is supplied for the CPU power socket.

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