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MSI MPG A850GS PCIE5, Fully Modular Gaming 850W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty
+ $10 off w/ promo code CBNWF36 w/ mobile checkout, limited offer
- 80 PLUS GOLD CERTIFIED –With 80 PLUS Gold certification (up to 90% efficiency)
- NATIVE 12V-2x6 CONNECTORS - Equipped with native 12V-2x6* PCIe connectors, it can deliver up to 600W of power per connector to support PCIe 5.1 *Two 12V-2x6 connectors on the PSU side.
- DURABLE DESIGN - This power supply is equipped with a 135 mm Fluid-dynamic bearing (FDB) fan, designed to enhance durability.
- The embossed jacket modular cables with premium copper alloy connectors to ensure reliable performance.
- LOW-NOISE OPERATION - The average sound level is maintained as low as that of a peaceful night, and it also features a Zero Fan Mode for an even quieter operation.
- COMPACT SIZE - A compact 150 mm-long and 150 mm-wide ATX form factor ensures a comfortable and easy fit in most PC cases. This frees up more space for cable management and airflow to the rest of the system.
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Specs
Reviews (926)
Learn more about the MSI MPG A850GS PCIE5
| Best Seller Ranking | #42 in Power Supplies |
|---|
| Brand | MSI |
|---|---|
| Model | MPG A850GS PCIE5 |
| Color | Black |
|---|---|
| Type | ATX12V |
| Maximum Power | 850 W |
| Fans | 1 x 135 mm |
| PFC | Active |
| +12V Rails | 2 |
| SATA Power Connector | 8 |
| Max PSU Length | 150 mm |
| Modular | Full Modular |
| Energy-Efficient | Up to 90% |
| Protection | OVP/ OCP/ OTP/ OPP/ SCP/ UVP |
| Input Voltage | 100 - 240 V |
| Input Frequency Range | 50/60 Hz |
| First Listed on Newegg | January 30, 2025 |
|---|
Warranty & Returns
Warranty, Returns, And Additional Information
Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
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Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-626-913-0828
- Support Website
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The MSI MPG A850GS PCIE5 is a fully modular 850W ATX power supply for gaming PCs with modern high-performance GPUs, featuring 80 PLUS Gold efficiency, ATX 3.1 and PCIe 5.1 readiness, and two native 12V-2x6 connectors rated for up to 600W each.
Recommended For
- PC builders using a modern single-GPU gaming system—especially an RTX 40/50-series or similar high-end card—who want native ATX 3.1 and 12V-2x6 connectivity instead of relying on older adapter cables.
- Quiet-focused gaming PC builders who spend long periods gaming or working near the system and want semi-passive operation at lighter loads with low measured fan noise under typical gaming loads.
- Enthusiast builders assembling a high-performance desktop with a premium CPU, one performance GPU, multiple drives, and two EPS CPU power connections, where 850W provides a practical capacity target without moving to a larger 1000W-class unit.
- Builders working in ATX cases with limited PSU clearance who need a fully modular unit measuring 150 mm deep, leaving more room for cable routing and front-of-PSU airflow than longer power supplies.
- Users planning to keep the same PSU through several GPU upgrades who value ATX 3.1 transient-load support, a 10-year warranty, and native modern GPU power cabling more than choosing the lowest-cost basic PSU.
Real-World Use Scenarios
- When building a gaming PC with a modern high-end graphics card, the user can connect the GPU directly with the included 12V-2x6 cable instead of relying on older multi-plug adapters. The result is a cleaner installation and native ATX 3.1/PCIe 5.1 support, provided the complete system remains within the 850 W capacity. ([msi.com](https://www.msi.com/Power-Supply/MPG-A850GS-PCIE5/Overview?utm_source=openai))
- For a typical gaming or desktop workload that spends much of its time below heavy power draw, the PSU can keep its fan stopped through semi-passive operation. Users are likely to experience little to no PSU fan noise during idle, web browsing, office work, and lighter gaming. ([hwbusters.com](https://hwbusters.com/psus/msi-mpg-a850gs-pcie5-atx-v3-1-psu-review/9/?utm_source=openai))
- During demanding gaming sessions or GPU-heavy workloads, the user gets a low-noise power supply rather than a fan that becomes a dominant sound source. Independent testing found noise below 15 dBA at loads up to about 630 W and below 30 dBA across the tested range. ([hwbusters.com](https://hwbusters.com/psus/msi-mpg-a850gs-pcie5-atx-v3-1-psu-review/9/?utm_source=openai))
- When installing the PSU in a compact or cable-constrained ATX gaming case, the 150 mm chassis length and fully modular cabling can make routing easier and leave more room near the drive bays or front airflow path. The practical benefit is a cleaner build with fewer unused cables inside the case. ([msi.com](https://www.msi.com/Power-Supply/MPG-A850GS-PCIE5/Overview?utm_source=openai))
- For a new gaming or creator build that combines a high-performance CPU with one power-hungry GPU, the user can expect stable operation under sustained load, with tight voltage regulation documented in independent testing. Efficiency is solid but not class-leading for the price, so the main practical advantage is quiet, consistent delivery rather than minimizing every watt of wall power. ([hwbusters.com](https://hwbusters.com/psus/msi-mpg-a850gs-pcie5-atx-v3-1-psu-review/?utm_source=openai))
Reference Q&A
Q: Should I buy the MSI MPG A850GS PCIE5 or the older MPG A850G PCIE5?
A: Choose the MPG A850GS PCIE5 for a new build using current PCIe 5.1 graphics cards or if you want dual native 12V-2x6 sockets. Both models provide 850W output, full modular cabling, 80 PLUS Gold efficiency, and a 150 mm chassis, but the older MPG A850G PCIE5 uses PCIe 5.0 and has one 16-pin connector. The MPG A850G remains a practical choice when it is substantially cheaper and your graphics card does not require the newer connector standard.
Q: Is the MSI MPG A850GS PCIE5 worth choosing over the MAG A850GLS PCIE5?
A: Choose the MPG A850GS PCIE5 when you value the longer 10-year warranty, server-grade 105°C capacitors, and dual native 12V-2x6 sockets. Choose the MAG A850GLS PCIE5 when its lower-tier pricing is more important and one native 12V-2x6 connector is sufficient. Both models provide 850W capacity, ATX 3.1 support, 80 PLUS Gold efficiency, a 150 mm chassis, and native 600W-class 12V-2x6 connectivity.
Q: Should I get the MSI MPG A850GS PCIE5 or step up to a 1000W or 1250W power supply?
A: The MPG A850GS PCIE5 is the better fit for most single-GPU gaming PCs whose estimated peak demand remains comfortably below 850W. Move to a 1000W or 1250W model when the system combines a higher-power graphics card, a high-power CPU, extensive overclocking, or a planned future upgrade. MSI’s higher-capacity MPG models retain the same 150 mm chassis size while increasing available output and, on the 1250W model, providing two native 12V-2x6 connectors.
Q: Is the MSI MPG A850GS PCIE5 a good choice for a compact gaming PC?
A: Yes, if the case accepts a standard ATX power supply and the system needs up to 850W. Its 150 mm length is compact for a fully modular ATX PSU, leaving more room for cable routing than longer units. It is suited to performance-focused compact builds, but it is not a substitute for an SFX or SFX-L power supply in cases designed specifically for those smaller form factors.
Q: Is 850W enough for a high-performance gaming PC?
A: The MSI MPG A850GS PCIE5 is suitable for many single-GPU gaming systems, including builds using modern high-performance graphics cards that recommend an 850W supply. Confirm the graphics card and CPU power requirements before purchase, especially for heavily overclocked, multi-GPU, or unusually power-hungry systems.
Q: Does this PSU connect directly to modern graphics cards?
A: Yes. It includes two native 12V-2x6 connectors and supports PCIe 5.1, with up to 600W available per connector according to the product specifications. This can reduce reliance on separate GPU power adapters, but the graphics card's connector requirements and recommended wattage should still be checked.
Q: Will this power supply fit in my PC case?
A: It uses a standard ATX form factor and measures 150 mm long by 150 mm wide. It should fit cases that support standard ATX power supplies, but verify the case's maximum PSU length and leave additional room for modular cable connectors and cable bends.
Q: Is this PSU a good choice for a quiet gaming PC?
A: It is designed for low-noise operation with a 135 mm fluid-dynamic-bearing fan and Zero Fan Mode. That makes it a reasonable choice for quieter builds, although actual noise depends on system load, room temperature, case airflow, and fan settings.
Q: Does this PSU include the cables needed for a new PC build?
A: As a fully modular PSU, it is designed so you connect only the cables required by your system. The product specifically includes native 12V-2x6 GPU connections, but you should confirm the included cable count for your motherboard, graphics card, SATA drives, and accessories before installation. Do not reuse modular cables from another power supply.