MSI MAG A850GLS 850W 80 PLUS Gold Fully Modular PSU

Product Overview

The MSI MAG A850GLS 850W Power Supply (MPN: MAG A850GLS) is a high-performance ATX 3.1 compliant PSU built for modern gaming PCs and powerful hardware configurations.

Featuring 850W continuous power output, 80 PLUS Gold efficiency, and a fully modular cable design, it provides reliable power delivery while improving system cable management and airflow.

With native PCIe 5.1 support and a 12V-2x6 connector, it is ready for next-generation NVIDIA RTX graphics cards.

850W ATX 3.1 Power Delivery

The MAG A850GLS delivers 850W continuous power with support for power excursions up to 1870W for short durations.

Its ATX 3.1 design is engineered to handle modern GPU power requirements, including demanding transient power spikes from high-end graphics cards.

PCIe 5.1 Ready for RTX GPUs

The included PCIe 5.1 16-pin 12V-2x6 connector supports up to 600W GPU power delivery through a native cable connection.

This makes the PSU compatible with current and future high-performance NVIDIA RTX 40 and RTX 50 series graphics cards.

80 PLUS Gold Efficiency

The 80 PLUS Gold certification provides efficiency of up to 90%, helping reduce wasted power, heat generation, and operating costs.

High-quality internal components including 105°C rated capacitors contribute to long-term reliability.

Fully Modular Cable Design

The fully modular design allows users to connect only the cables required for their build, improving airflow and keeping the system cleaner.

• 1 × 24-pin ATX connector
• 2 × EPS CPU connectors
• 1 × PCIe 5.1 12V-2x6 connector
• 4 × PCIe 6+2 pin connectors
• 8 × SATA connectors
  
  

Quiet Cooling with 135mm FDB Fan

The PSU uses a 135mm fluid dynamic bearing fan designed for quiet operation, lower vibration, and extended lifespan.

The optimized cooling system helps maintain stable operation during gaming and high-load workloads.

Protection and Reliability

The MAG A850GLS includes multiple protection systems to safeguard connected components.

• Over Current Protection (OCP)
• Over Voltage Protection (OVP)
• Under Voltage Protection (UVP)
• Over Power Protection (OPP)
• Over Temperature Protection (OTP)
• Short Circuit Protection (SCP)
  
  

Who This Power Supply Is For

• Gaming PC builders
• Users upgrading to RTX 40/50 series GPUs
• High-performance desktop systems
• Creators needing reliable GPU power
• Custom PC enthusiasts
  
  

Frequently Asked Questions

Is the MSI MAG A850GLS ready for RTX 50 series cards?
Yes. It includes a native PCIe 5.1 12V-2x6 connector designed for newer RTX GPUs.

Is this PSU fully modular?
Yes. All power cables are detachable for cleaner builds and easier cable management.

Is 850W enough for gaming PCs?
Yes. 850W provides suitable headroom for many high-performance gaming configurations.

What efficiency rating does it have?
It is 80 PLUS Gold certified with efficiency up to 90%.

Does it support ATX 3.1?
Yes. It follows the ATX 3.1 standard for modern power delivery requirements.

Core Specifications

Power Output: 850W continuous, with up to 1870W excursion (220%) for 100μs

Efficiency: 80 PLUS Gold certified (up to 90%)

Form Factor: ATX 3.1 compliant

Modularity: Fully modular design for flexible cable management

Fan: 135 mm fluid dynamic bearing fan (optimized for low noise and long lifespan)

Dimensions: 150 × 150 × 86 mm

Input Voltage: 100–240V~, 12A, 47–63Hz

Connectors

ATX (24‑pin): 1

EPS (8‑pin): 1

EPS (4+4‑pin): 1

PCIe 5.1 (16‑pin, 12V‑2x6): 1 (supports up to 600W)

PCIe (6+2‑pin): 4

SATA (15‑pin): 8

Molex (4‑pin): 3

FDD (4‑pin): 1

Protection Features

OCP: Over Current Protection

OVP: Over Voltage Protection

UVP: Under Voltage Protection

OPP: Over Power Protection

OTP: Over Temperature Protection

SCP: Short Circuit Protection

SIP/NLO: Surge & No Load protection

Performance Highlights

GPU Ready: Native 12V‑2x6 connector supports NVIDIA RTX 40 & 50 series cards.

Power Excursion: Handles 3× GPU power excursions safely.

Noise Optimization: Designed for quiet operation, even under heavy loads.

Durability: Copper alloy terminals, UL‑certified braided cables, and 105°C main capacitors ensure long-term reliability.

MTTF: 150,000 hours at 25°C