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Rectangular black PSU with modular sockets and a 120mm fan grille

Rosewill Open box

Rosewill CMG1000G5 1000 W ATX 3.0 3.1 80+ Gold Full Modular power supply

SKU CH-V8J3-SSHN8 MPN CMG1000G5

A 1000 W ATX 3.0 and 3.1 compatible power supply with 80 PLUS Gold efficiency, full modular cabling, a native 600 W PCIe 5.0 12V-2x6 connector and a compact 140 mm depth

  • Max wattage1000 W
  • Power efficiencyUp to 92%
  • Modular cablingFull Modular
  • Fan configuration1 x Silent 120 mm FDB fan
  • Power factor correctionActive
  • Main power connector20+4Pin
  • ATX 3.0 and 3.1 ready for modern platforms
  • 80 PLUS Gold certified efficiency up to 92 percent
  • Native 12VHPWR connector delivers 600 W to PCIe 5.0 GPUs
  • Full modular cabling keeps the build tidy
  • Compact 140 mm depth fits small cases

ATX 3.0 and 3.1 ready 1000 W unit

This full-modular power supply delivers 1000 W of continuous output and meets Intel ATX 3.0 and 3.1 specifications. It carries 80 PLUS Gold certification with up to 92 percent efficiency and uses a single +12 V rail design. A 120 mm FDB fan provides cooling in a compact 140 mm deep chassis.

Native 12V-2x6 cable for modern GPUs

The bundle includes a native 12+4 pin 12V-2x6 cable rated for 600 W PCIe 5.0 power excursions up to 235 percent and GPU excursions up to 300 percent. Four 6+2 pin PCIe connectors, eight SATA connectors, two EPS 4+4 pin cables and four peripheral cables are also supplied. Full modularity lets you install only the cables your build requires.

Verify case depth and GPU power needs

Confirm your case can accommodate a 140 mm deep power supply before ordering. Check that your graphics card uses a 12V-2x6 or 12VHPWR connector to leverage the 600 W native cable, or that it can be powered by the four 6+2 pin connectors. Ensure the single +12 V rail design matches your system's power distribution requirements.

How it compares

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

Price $62.99
Cheaper than about 83% of the 10,869 comparable items (median $142.99).
Max wattage 1000 W
Higher than about 70% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameRosewill
Product lineCMG
Model nameCMG1000G5
Product typeATX 3.0 Compatible / ATX 3.1 Compatible
Graphics
SLI supportReady
CrossFire supportReady
Ports & slots
PCIe power connectors4 × 6+2-Pin & 1x 12+4-Pin
SATA power connectors8
Output type+3.3 V@25A, +5 V@25A, +5VSB@3A
Power
Max wattage1000 W
Power efficiencyUp to 92%
Modular cablingFull Modular
Power factor correctionActive
Main power connector20+4Pin
12V railsSingle
Power hold-up time16 ms min.
Efficiency certification80 PLUS GOLD Certified
Overvoltage protectionYes
Overload protectionYes
Size & build
Shipping weight2.85 kg
Package size290 × 229 × 117 mm
Compatibility
PSU length limit140 mm
More details
Fan configuration1 x Silent 120 mm FDB fan

Questions about this item

How often should the 120 mm FDB fan be cleaned or replaced?

The fluid-dynamic bearing fan is rated for long life; clean dust from the intake every few months and replace only if bearing noise appears.

What limits output first during continuous 1000 W loads?

The single 12 V rail and 16 ms hold-up time define the sustained ceiling; protection circuits engage if temperature or current exceed design limits.

How loud and hot does the unit get when running all day?

The silent 120 mm FDB fan keeps noise low at typical loads; 80 PLUS Gold efficiency up to 92 % reduces waste heat during extended operation.

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