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Black fully modular ATX power supply with 135 mm fan

MSI

MSI MPG A1250GS PCIE5 II 1250W power supply

SKU CH-E43Y-GVH9T MPN MPG A1250GS PCIE5 II

A fully modular 1250 W ATX power supply with dual native 12V-2x6 connectors, 80 PLUS Gold efficiency and a 135 mm FDB fan

  • ColorBlack
  • TypeATX12V
  • Maximum Power1250 W
  • Fans1 x 135 mm
  • PFCActive
  • ModularFull Modular

Options ATX 3.1 (1250W) Dual 12V-2x6 + 3x 8-Pin

  • Delivers 1250 W to power demanding GPUs and CPUs
  • 80 PLUS Gold certification reaches up to 90 % efficiency
  • Dual native 12V-2x6 connectors supply up to 600 W each for PCIe 5.1 graphics cards
  • 135 mm fluid-dynamic bearing fan and Zero Fan Mode keep noise to a whisper
  • Compact 150 mm depth frees space for airflow and cable routing

Built for PCIe 5.1 GPUs and AI workloads

This 1250 W ATX 3.1 power supply targets builders who need stable delivery for NVIDIA 50-series graphics cards and machine-learning systems. Dual native 12V-2x6 connectors each provide up to 600 W, matching the latest GPU power specification. 80 PLUS Gold certification guarantees up to 90 percent efficiency at typical loads.

Straightforward full-modular installation

All cables detach, so only the required leads enter the case, simplifying routing and airflow. Embossed jacket sleeving protects wires during handling, while premium copper-alloy connectors ensure firm seating. The 135 mm fluid-dynamic bearing fan fits the standard ATX 150 mm depth, avoiding clearance issues in most chassis.

ATX 3.1 excursion limits define headroom

The design meets Intel PSDG ATX 3.1, sustaining 235 percent total power excursion and 3x GPU power excursion for short bursts. Input range covers 100 to 240 V at 50 to 60 Hz with a maximum 15 A draw. Active PFC and a semi-digital LLC controller maintain tight regulation under dynamic loads.

Highlights

  • Delivers 1250 W to power demanding GPUs and CPUs
  • 80 PLUS Gold certification reaches up to 90 % efficiency
  • Dual native 12V-2x6 connectors supply up to 600 W each for PCIe 5.1 graphics cards
  • 135 mm fluid-dynamic bearing fan and Zero Fan Mode keep noise to a whisper
  • Compact 150 mm depth frees space for airflow and cable routing

Specifications

BrandMSI
ModelMPG A1250GS PCIE5 II
ColorBlack
TypeATX12V
Maximum Power1250 W
Fans1 x 135 mm
PFCActive
ModularFull Modular
Energy-Efficient80 PLUS GOLD Certified
ProtectionOVP, OCP, OTP, OPP , SCP, UVP
Input Voltage100 - 240 V
Input Frequency Range50Hz ~ 60Hz
Input Current15A (Max.)
Dimensions11.89*10.04*5.08 inch
Weight7.61lbs
Shipping weight3.72 kg
Package size305 × 229 × 133 mm

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Questions about this item

Will the dual 12V-2x6 connectors each deliver 600 W for PCIe 5.1 graphics cards?

Yes, the two native 12V-2x6 cables are rated for up to 600 W per connector, matching the PCIe 5.1 specification.

Does the 150 mm depth leave room for cable routing in standard ATX cases?

The compact 150 mm length and width fit most ATX chassis, freeing extra space for cable management and airflow.

What protections are built in against voltage or current faults?

The unit includes over-voltage, over-current, over-temperature, over-power, short-circuit and under-voltage protection circuits.

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