Product Overview
The MSI MPG A1250GS PCIE5 is a next-generation enthusiast-grade power supply engineered for ultra-performance gaming PCs, AI workstations, and creator systems requiring extreme power stability. Delivering 1250 watts of continuous power with ATX 3.1 compliance, PCIe 5.1 readiness, dual native 12V-2×6 GPU connectors, and premium internal components, this PSU is designed to handle the most demanding modern hardware with confidence.
Built for Next-Generation High-End Systems
Designed for powerful GPUs and modern CPU platforms, the MPG A1250GS delivers the power headroom serious systems require.
Ideal for:
• High-end gaming PCs
• RTX 50 Series GPU builds
• AI workstations
• Content creation systems
• Overclocked enthusiast platforms
• Multi-drive performance desktops
Provides stable, future-ready power for demanding configurations.
Massive 1250W Continuous Output
High sustained power capacity supports flagship hardware and upgrade flexibility.
Power capabilities include:
• 1250W continuous output
• Stable power delivery under heavy loads
• Suitable for flagship CPUs and GPUs
• Supports power-hungry next-gen hardware
Excellent for performance-focused builds requiring dependable output.
ATX 3.1 & PCIe 5.1 Ready
Built to meet the latest PSU standards for modern GPUs and power excursion demands.
Advanced platform features include:
• ATX 3.1 compliance
• PCIe 5.1 support
• Better transient load handling
• Enhanced voltage regulation compatibility
• Next-generation hardware readiness
Ensures long-term platform compatibility.
Native Dual 12V-2×6 GPU Connectors
Ready for modern graphics cards without adapters.
GPU connectivity includes:
• 2 × native 12V-2×6 connectors
• Up to 600W per connector
• Native RTX 50 Series support
• Cleaner direct GPU power delivery
Designed for modern flagship graphics cards and demanding GPU workloads.
Exceptional Power Excursion Handling
Built to manage aggressive transient spikes from high-end GPUs.
Power excursion support:
• Up to 2937W peak excursion
• 235% load support for 100μs
Helps maintain system stability during sudden GPU load spikes.
80 PLUS Gold Efficiency
High-efficiency operation helps reduce wasted energy and heat output.
Efficiency benefits include:
• 80 PLUS Gold certified
• Up to 90% efficiency
• Lower heat generation
• Improved power efficiency
• Reduced operating waste
Efficient performance for demanding systems.
Premium Internal Components
Engineered for durability and long-term stability.
Component quality includes:
• 100% server-grade 105°C capacitors
• Premium power delivery components
• Enhanced thermal durability
• Improved reliability under sustained heavy loads
Built for enthusiast-class reliability.
Quiet Optimized Cooling
Designed to balance cooling performance with quieter operation.
Cooling features include:
• 135mm cooling fan
• Fluid Dynamic Bearing design
• Optimized acoustic tuning
• Improved lifespan compared to conventional bearings
Maintains efficient thermal control with reduced noise.
Fully Modular Cable Design
Only connect the cables you need for cleaner builds and better airflow.
Cable benefits include:
• Full modular layout
• Easier cable routing
• Improved airflow management
• Simplified installation
• Cleaner internal aesthetics
Ideal for premium custom PC builds.
Enhanced Cable Management
Designed for easier routing in modern cases.
Cable design includes:
• Embossed jacket cables
• Better flexibility
• Easier bending and cable management
• Cleaner installation experience
• Dual-tone 12V-2×6 connector visual guidance
Improves usability during system assembly.
Industrial-Grade Protection Suite
Comprehensive safety protection helps safeguard connected components.
Protection technologies include:
• OCP (Over Current Protection)
• OTP (Over Temperature Protection)
• OPP (Over Power Protection)
• SCP (Short Circuit Protection)
• OVP (Over Voltage Protection)
• UVP (Under Voltage Protection)
• SIP (Surge & Inrush Protection)
• NLO protection
Built for dependable system safety.
Connectivity Options
Comprehensive connectivity for modern high-performance builds.
Connectors include:
• 1 × 24-pin ATX
• 2 × 8-pin EPS (4+4 CPU)
• 2 × PCIe 5.1 16-pin (12V-2×6)
• 1 × PCIe 6+2-pin
• 8 × SATA power
• 4 × Peripheral (Molex)
Supports a wide range of system configurations.
Compact High-Power Form Factor
Strong power output in a practical PSU footprint.
Physical specifications:
• 150 × 150 × 86 mm
Suitable for many modern ATX-compatible cases.
Ideal For
Perfect for RTX 5090 / RTX 5080 builds, enthusiast gaming PCs, AI workloads, workstation builds, content creators, overclockers, and future-ready premium desktop systems.
Box Contents
Included in the package:
• MSI MPG A1250GS PCIE5 Power Supply
• Modular cable set
• Power cable
• Installation documentation
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