MSI MPG A1250GS PCIE5

1250 W · 80+ Gold · Fully modular

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Wattage 1250 W
Efficiency 80+ Gold
Modular Fully modular
Form factor ATX

MSI MPG A1250GS PCIE5 is a 1250 W power supply rated 80+ Gold (fully modular). Pick one with some headroom above your build's draw. It came out in 2025.

Released: 2025-01-13

Specifications

Key specs

Wattage: 1250 W
Efficiency: 80+ Gold
Modular: Fully modular
Form factor: ATX
Released: 2025-01-13
Part number: MPG A1250GS PCIE5
EAN / UPC: 4711377243766

Power

Total power: 1250 W
AC input voltage: 100 - 240 V
AC input frequency: 50/60 Hz
Power Factor Correction (PFC) type: Active
Combined power (+12V): 1249 W
Combined power (+5V): 20 W
Combined power (-12V): 3.6 W
Combined power (+5Vsb): 15 W
Max output current (+5V): 22 A
Max output current (-12V): 0.3 A
Max output current (+5Vsb): 3 A
Efficiency: 90%

Ports & interfaces

Motherboard power connector: 20+4 pin ATX
Motherboard power cable length: 60 cm
Number of SATA power connectors: 8
Peripheral (Molex) power connectors (4-pin): 4
EPS power connector (4+4 pin): Yes
PCI Express power connectors (6+2 pin): 1
PCI Express connector: Yes
Cabling type: Fully-Modular

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Performance

80 PLUS certification: 80 PLUS Gold
Supported motherboard form factors: ATX
Purpose: PC/Server
Power supply unit (PSU) form factor: ATX
ATX version: 3.1

Design

Product colour: Black
Cooling type: Semi-passive
Fan diameter: 13.5 cm
Number of fans: 1 fan(s)

Weight & dimensions

Width: 150 mm
Depth: 86 mm
Height: 150 mm

Check the manufacturer's page before buying.

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About this product

Featuring ATX 3.1 and PCIe 5.1 support with two 12V-2x6 connectors, these PSUs are built to handle NVIDIA’s 50 series graphics cards and AI PCs with ease. Advanced thermal solutions ensure cool, stable, and efficient operation, even under heavy loads, giving you the reliability and durability you need for gaming, streaming, or AI-powered tasks.

Datasheet (PDF)

MPG A1250GS PCIE5 vs similar power supplies

	MSI MPG A1250GS PCIE5	MSI A1250GL PCIE5	MSI MAG A1250GL PCIE5	Chieftec POLARIS 3.0 1250W
Wattage	1250 W	1250 W	1250 W	1250 W
Efficiency	80+ Gold	80+ Gold	80+ Gold	80+ Gold
Modular	Fully modular	Fully modular	Fully modular	Fully modular
Form factor	ATX	ATX	ATX	ATX
Released	2025	2024	—	2023