MSI MAG A1250GL PCIE5 1250W 80+ Gold Fully Modular PCIe 5.0 ATX 3.1 Power Supply Unit

1250W Fully Modular ATX 3.1 PSU — 80 PLUS Gold (up to 90% efficiency), Native PCIe 5.1 12V-2x6 16‑Pin (600W) Connector, LLC Half-Bridge DC-to-DC Design, 135mm FDB Fan, Up to 200% Power Excursion (2500W), 7–10 Year Warranty (region dependent).

The MSI MAG A1250GL PCIE5 is a compact, fully modular 1250W 80 PLUS Gold power supply built for extreme RTX 40/50‑series and future high‑end GPUs. ATX 3.1 readiness and a native dual‑color 12V‑2x6 PCIe 5.1 connector allow up to 600W direct GPU power with improved contact safety, while support for up to 2500W peak power excursion (200% of rated power for 100μs) ensures stability during heavy transient spikes. A robust LLC half‑bridge DC‑to‑DC platform, 135mm fluid dynamic bearing fan, flat modular cabling, and industrial‑grade protection make the MAG A1250GL PCIE5 ideal for flagship gaming, creator, and AI systems.[web:468][web:469][web:476][web:475][web:473][web:474]

>ATX 3.1 & PCIe 5.1 Ready — Fully compliant with Intel ATX 3.1 and PCIe CEM 5.1, designed for NVIDIA GeForce RTX 40/50‑series and next‑gen GPUs.[web:468][web:469][web:478][web:475] >Native 12V‑2x6 PCIe 5.1 (600W) — Dual‑color 12V‑2x6 connector supplies up to 600W to compatible GPUs, improving reliability and handling high power GPUs without extra adapters.[web:468][web:469][web:473][web:474] >80 PLUS Gold Efficiency — Up to ~90% efficiency at 50% load and ~87% at full load reduces wasted power and heat.[web:473][web:474][web:476][web:477] >High Power Excursion Capability — Supports up to 2500W peak power excursion (200% of rated wattage for 100μs) in line with ATX 3.1 guidelines, handling extreme GPU transients.[web:476][web:473][web:475] >LLC Half-Bridge DC-to-DC Platform — LLC half‑bridge topology with DC‑to‑DC modules delivers tight voltage regulation and low ripple on all rails.[web:468][web:469][web:475] >135mm FDB Cooling Fan — 135mm fluid dynamic bearing fan offers high airflow (up to ~71 CFM) and long lifespan with low noise across the RPM range.[web:473][web:474][web:475] >Fully Modular Sleeved Cables — Fully modular, sleeved cables let you connect only what you need, improving airflow and aesthetics in high‑end builds.[web:468][web:469][web:474][web:480] >Industrial-Grade Protections — OVP, OCP, OPP, OTP, SCP, and UVP safeguard PSU and components from electrical faults.[web:468][web:469][web:476][web:477] >Compact ATX Footprint — 150mm depth ATX housing fits easily in many mid‑towers while still delivering 1250W output.[web:476][web:475][web:474] >Long Warranty — MSI region specs list 7 years; some global resellers note up to 10‑year limited warranty depending on market.[web:473][web:474][web:475]