This article covers MSI MPG A850GS PCIE 5.1 ATX 3.1 ゲーム用電源.

Overview

MSI's MPG series brings the MPG A850GS PCIE 5.1 ATX 3.1, an 850W power supply that meets the latest ATX 3.1 standard and carries 80 Plus Gold certification. It features a fully modular cable design, allowing you to use only the cables you need for a clean build. A standout feature is the dual 12V-2x6 connectors, which let you connect modern GeForce RTX 40-series and future GPUs directly without adapters. Inside, 100% Japanese 105°C capacitors ensure long-term reliability, backed by a 10-year warranty. Positioned in the mid-high tier, this 850W unit is ideal for single-GPU mid-range to high-end systems. It's a solid choice for gamers and PC enthusiasts who want modern connectivity and proven build quality.

Compatibility Guide

Form factor: Standard ATX (150×140×86mm) — fits most ATX cases, but check depth in compact enclosures. Motherboard support: Works with ATX, Micro-ATX, Mini-ITX boards using standard 24-pin ATX connector. Dual 12V-2x6 connectors: Directly compatible with NVIDIA GeForce RTX 40/50 series GPUs that use 12VHPWR. For older GPUs, included PCIe 8-pin cables are provided. EPS12V: Two CPU power connectors support high-end motherboards and dual-CPU setups. * 850W capacity: Sufficient for RTX 4070 Ti Super with Ryzen 7/Core i7, and even handles RTX 4090 with headroom.

Product Info

Release: Early 2025 Price: Around ¥21,000 ( reference) Warranty: 10 years 80 Plus Gold certified (≥87% efficiency at typical load) Fully modular cables Active PFC + LLC half-bridge + DC-DC converters 100% Japanese 105°C capacitors Protections: OVP, OCP, OPP, OTP, SCP, UVP Market positioning: Mid-high tier. While 80 Plus Gold is common, the inclusion of ATX 3.1, PCIe 5.1, and dual 12V-2x6 puts it ahead of many competitors in the same price bracket.

Best Use Cases

Gamers wanting adapter-free GPU connection: Directly power RTX 4070 Ti Super or RTX 4080 Super without a dongle, reducing cable clutter and potential melting risks. Long-term builders: Japanese capacitors and 10-year warranty make this a reliable foundation for a system you plan to keep for 5+ years. * Cable-management enthusiasts: Fully modular design lets you use only necessary cables, keeping the case tidy. The 135mm fan runs silently at low loads. Not ideal for budget office PCs needing under 500W, or for users who prioritize absolute efficiency (Platinum/Titanium) for 24/7 operation.

Things to Consider

Case depth: At 140mm deep, it's compact but may not fit very small Mini-ITX cases — measure your PSU compartment first. Gold vs Platinum: Gold is efficient enough for most users, but if you run your PC 24/7 under high load, a Platinum unit might save more on electricity over time. Dual 12V-2x6: Currently, very few GPUs use two such connectors simultaneously. For single-GPU builds, one connector is enough, so this feature may feel overkill now but future-proofs your system. Competitors: Corsair RM850x and Seasonic Focus GX-850 are strong alternatives with similar reliability. Compare prices before buying. ## FAQ
Q: Will this PSU support an RTX 5090? A: The RTX 5090 hasn't been released yet, but the MPG A850GS complies with ATX 3.1 and PCIe 5.1, and has dual 12V-2x6 connectors, so it's designed to handle future high-end GPUs. However, if the GPU's TDP exceeds 600W, 850W may be insufficient — consider a higher-wattage model in that case. Q: What cables are included? A: The package includes: ATX 24-pin, EPS 12V (4+4-pin) ×2, PCIe 8-pin (6+2-pin) ×4, SATA cables ×2, peripheral cable ×1, and 12V-2x6 cables ×2. All necessary cables are provided. Q: How quiet is it? A: It uses a 135mm fluid dynamic bearing fan with semi-fanless mode — the fan stops under low load. Under typical gaming loads, noise is barely noticeable.

Product Disclosure (Amazon)

  • Manufacturer: MSI
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B0DT2V39K4
  • Note: This article covers a manufacturer-made product based on Amazon listing details.