MSI MAG A1250GL PCIE5 1250W 80 PLUS Gold Modular Power Supply

The MSI MAG A1250GL PCIE5 is a 1250-watt fully modular ATX 3.1 power supply engineered for high-performance gaming and workstation builds. Built to handle the demanding power requirements of modern GPUs, it ships with a native dual-colour PCIe CEM 5.1 connector — a single 16-pin cable capable of delivering up to 600 W — and is compatible with NVIDIA GeForce RTX 40 series graphics cards that draw transient power spikes above their rated TDP. The ATX 3.1 specification support means the unit can sustain power excursions of up to 2500 W (200 % of rated output) for 100 microseconds, ensuring voltage stability does not falter during intense GPU burst loads. Inside, MSI employs a half-bridge LLC resonant topology combined with synchronous rectification and a DC-to-DC converter module for the minor voltage rails. This circuit architecture improves conversion efficiency at a wide range of loads and keeps output voltages tightly regulated. Energy efficiency is certified at 80 PLUS Gold, which corresponds to up to 90 % efficiency under typical load conditions, reducing heat dissipated inside the chassis and lowering electricity costs over long gaming sessions. Active Power Factor Correction (Active PFC) minimises reactive current draw from the mains supply across an input voltage range of 100–240 V at 50–60 Hz, making the unit suitable for Indian households and globally. The fully modular cable system lets builders connect only the cables required for their configuration, cutting cable clutter and improving airflow. All included cables are flat, simplifying routing behind motherboard trays. A storage solution for unused cables is bundled in the box. Cooling is handled by a 135 mm fan mounted on a fluid dynamic bearing — a design chosen for its low friction, quiet operation, and extended operational life compared to sleeve-bearing alternatives. Six-layer protection circuits — Over-Current Protection (OCP), Over-Voltage Protection (OVP), Over-Power Protection (OPP), Over-Temperature Protection (OTP), Short-Circuit Protection (SCP), and Under-Voltage Protection (UVP) — safeguard every component connected to the PSU. Verified Specifications: • Rated power: 1250 W • Peak power excursion: 2500 W (up to 200 % for 100 µs) • Efficiency: 80 PLUS Gold (up to 90 %) • Form factor: ATX 3.1 • Modular: Fully modular, flat cables • Fan: 135 mm fluid dynamic bearing • Input voltage: 100–240 V~, 50–60 Hz • Active PFC: Yes • Topology: Half-bridge LLC + SR + DC/DC • Dimensions (D × W × H): 150 × 150 × 86 mm • Connectors: 1× ATX 24-pin, 2× EPS 4+4-pin, 1× PCIe 5.1 16-pin (600 W), 4× PCIe 6+2-pin, 12× SATA 15-pin, 4× Molex 4-pin, 1× FDD 4-pin • Protection: OCP / OVP / OPP / OTP / SCP / UVP • Warranty: 7 years