Does the MSI|MPG A1250GS PCIE5 R power supply support the new ATX 3.1 and PCIe 5.1 standards?

Yes, the MSI MPG A1250GS PCIE5 power supply is ATX 3.1 and PCIe 5.1 ready.

Is the 80+ Gold certification indicative of a particular energy efficiency level, and what does this mean for power consumption under load?

80 PLUS Gold certification indicates that the power supply is capable of achieving up to 90% efficiency under load. This means that it can convert a significant portion of the electrical power drawn from the wall into usable power for the computer, minimizing energy waste and reducing overall power consumption.

Can the dual 12V-2x6 cables support dual GPU setups, and are there any additional cables included for other components?

The dual-native 12V-2x6 connectors can deliver up to 600W of power per connector, making it suitable for supporting high-end GPU setups, including dual GPU configurations.

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Main image of MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

Alt view image 2 of 14 - MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

Alt view image 3 of 14 - MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

Alt view image 4 of 14 - MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

Alt view image 5 of 14 - MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

Alt view image 6 of 14 - MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

Alt view image 7 of 14 - MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

Alt view image 8 of 14 - MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

Alt view image 9 of 14 - MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

Alt view image 10 of 14 - MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

Alt view image 11 of 14 - MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

Alt view image 12 of 14 - MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

Alt view image 13 of 14 - MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

Alt view image 14 of 14 - MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

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MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

Name: MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty
Uploaded: 2026-07-21
Description: MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

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Options: ATX 3.1 (1250W) Dual 12V-2x6

ATX 3.1 (1000W)
ATX 3.1 (1000W) Dual 12V-2x6
ATX 3.1 (1250W) Dual 12V-2x6
ATX 3.1 (1300W)
ATX 3.1 (1600W) Dual 12V-2x6
ATX 3.1 (850W)
ATX 3.1 (850W) Dual 12V-2x6
ATX 3.1 (1250W) Dual 12V-2x6 + 3x 8-Pin
ATX 3.1 (1000W) Dual 12V-2x6 + 3x 8-Pin

80 PLUS GOLD CERTIFIED –With 80 PLUS Gold certification (up to 90% efficiency)
DUAL-NATIVE 12V-2x6 CONNECTORS - Equipped with dual-native 12V-2x6 PCIe connectors, it can deliver up to 600W of power per connector to support PCIe 5.1 GPUs.
DURABLE DESIGN - This power supply is equipped with a 135 mm Fluid-dynamic bearing (FDB) fan, designed to enhance durability.
The embossed jacket modular cables with premium copper alloy connectors to ensure reliable performance.
LOW-NOISE OPERATION - The average sound level is maintained as low as that of a peaceful night, and it also features a Zero Fan Mode for an even quieter operation.
COMPACT SIZE - A compact 150 mm-long and 150 mm-wide ATX form factor ensures a comfortable and easy fit in most PC cases. This frees up more space for cable management and airflow to the rest of the system.

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Learn more about the MSI MPG A1250GS PCIE5

General
Brand	MSI
Model	MPG A1250GS PCIE5

Details
Color	Black
Type	ATX12V
Maximum Power	1250 W
Fans	1 x 135 mm
PFC	Active
+12V Rails	2
SATA Power Connector	8
Max PSU Length	150 mm
Modular	Full Modular
Energy-Efficient	Up to 92%
Protection	OVP/ OCP/ OTP/ OPP/ SCP/ UVP
Input Voltage	100 - 240 V
Input Frequency Range	50/60 Hz

Additional Information
First Listed on Newegg	June 17, 2025

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