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Black rectangular ATX power supply with 135 mm fan and modular cable sockets

MSI

MSI MPG A1000GS PCIE5 1000 W power supply

SKU CH-5K8M-HV82W MPN MPG A1000GS PCIE5

A 1000 W fully modular ATX supply with dual 12V-2x6 connectors for PCIe 5.1 graphics cards and 80 Plus Gold efficiency

  • Max wattage1000 W
  • Modular cablingFull Modular
  • Fan configuration1 × 135 mm
  • Power factor correctionActive
  • 12V rails2
  • SATA power connectors8

Model ATX 3.1 (1000W) Dual 12V-2x6

Show 3 more
  • Up to 90% efficiency with 80 PLUS Gold certification
  • Dual 12V-2x6 connectors each deliver 600W for PCIe 5.1 GPUs
  • 135mm fluid-dynamic bearing fan enables zero-fan mode for silent operation
  • Compact 150mm depth frees space for cable routing and airflow
  • Full modular design with embossed jacket cables simplifies installation

1000 W ATX 3.1 power supply

The MSI MPG A1000GS PCIE5 is a fully modular ATX 3.1 unit rated for 1000 W. It targets high-end desktop builds that need stable delivery for modern graphics cards and multi-core processors. The compact 150 mm depth helps it fit a wide range of cases while leaving room for cable routing.

Compatibility checklist

Verify that your chassis can accommodate a 150 mm deep ATX power supply. Ensure the motherboard accepts a 24-pin ATX connector and two 8-pin EPS connectors for CPU power. Confirm your graphics card requires either a 16-pin 12V-2x6 connector or an 8-pin PCIe connector, as the unit provides two of the former and one of the latter.

Sustained-load behaviour

Dual 12 V rails and a 135 mm fluid-dynamic bearing fan manage heat during extended high-wattage operation. Zero Fan Mode keeps the fan off at low loads, while the semi-digital platform maintains voltage regulation across long sessions. The 80 Plus Gold rating indicates up to 90 percent efficiency at typical loads, reducing waste heat inside the case.

How it compares

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

Price $156.99
Typical for this category: the median of 10,869 items is $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 nameMSI
Model nameMPG A1000GS PCIE5
Product colorBlack
Product typeATX12 V
Ports & slots
SATA power connectors8
Connection types1 × 24 pin (20+4) ATX
2 × 8 pin (4+4) EPS (CPU)
1 × 8 pin (6+2) PCIe
2 × 16 pin PCIe (600 W)
4 × 4 pin Peripheral
8 x SATA
Power
Max wattage1000 W
Modular cablingFull Modular
Power factor correctionActive
12V rails2
Efficiency certificationUp to 90%
Built-in protectionOVP/ OCP/ OTP/ OPP/ SCP/ UVP
Supply voltage100–240 V
AC input frequency50/60 Hz
Size & build
Shipping weight3.33 kg
Package size298 × 229 × 140 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

Does the box include the dual 12V-2x6 cables for a PCIe 5.1 GPU or must they be purchased separately?

The unit ships with two native 12V-2x6 connectors already attached to the modular cables, so no extra purchase is needed for a 600 W graphics card.

The spec sheet lists two 16-pin PCIe connectors rated at 600 W each; how do I decide which one to use?

Both connectors are identical and each can supply up to 600 W, so you simply plug your GPU into either one; the second remains available for a future card.

What does the 1000 W rating mean when the PSU is installed in a typical gaming PC?

It means the unit can continuously deliver 1000 W across its two +12 V rails while maintaining up to 90 % efficiency and keeping noise low via the 135 mm FDB fan and Zero Fan Mode.

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