- Home
- Products
- Power & Cooling
- Redragon

Redragon RGMS-850W PRO 80+ Gold 850 Watt Power Supply w/ATX 3.1 & PCIe 5.1 Ready, Non-Modular Active PFC, Compact 150mm Size, 120mm Low Noise Fan, 100% Japanese Capacitors
Want the best price and purchase timing?
Our AI advisor analyzes real-time pricing across all channels to find you the best deal.
AI Verdict
This 850-watt 80+ Gold fully modular ATX 3.1 power supply with 100% Japanese capacitors is for PC builders needing current GPU compatibility in a 150mm chassis.
This power supply is a situational fit, offering modern ATX 3.1 and PCIe 5.1 compatibility with a 12VHPWR cable, making it suitable for current high-end GPU demands. Its 150mm compact size and fully modular design are practical for many builds. However, the brand's newer entry into the PSU market means long-term reliability data is less established compared to competitors.
If you need more assurance on long-term reliability, look for PSUs from brands with a longer track record in the power supply market and extensive independent testing reports.
Regret Score™
Low RiskLower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity
Issues discovered after purchase
Critically weak dimension
Amazon rating vs actual quality
Chance this product isn't for you
Pros
- 80 Plus Gold Certification provides higher energy efficiency and cooler case temperatures.
- ATX 3.1 and PCIe 5.1 readiness supports current NVIDIA 4090/4080/4070Ti graphics cards with a 12VHPWR cable included.
- Built with 100% Japanese Capacitors for enhanced reliability and durability.
- Compact 150mm size allows for broader chassis compatibility and improved cable management space.
- Features OVP, OCP, OPP, OTP, UVP, and SCP protections for system safety.
- The 120mm FDB fan operates at an average 36dB level, with some models featuring a Zero RPM mode below 60℃ for silent operation.
Cons
- The brand's reputation for PSUs is viewed with skepticism by some users, who question its reliability compared to established brands.
- The product title incorrectly states "Non-Modular" while the detailed specifications confirm it is fully modular, which could confuse buyers.
- The fan size is listed as 150mm in some product data but is consistently described as 120mm in detailed specifications and feature lists.
Dimension Scores
The 80 Plus Gold certification, ATX 3.1, and PCIe 5.1 readiness with 200% total and 300% GPU power excursion capabilities position it well for modern high-demand systems.
The 120mm FDB fan with an average 36dB noise level and a Zero RPM mode (on some models) offers quiet operation under typical loads.
The use of 100% Japanese Capacitors and a mainstream LLC resonant + DC-DC structure indicates a focus on stable power delivery and component longevity.
Its fully modular design allows for selective cable use, reducing clutter, and the compact 150mm size leaves more space within the chassis for routing.
Best For
- PC builds requiring ATX 3.1 and PCIe 5.1 power delivery for high-performance NVIDIA 40-series GPUs.
- Compact PC cases where the 150mm PSU length is a critical fitment factor.
- Users prioritizing power efficiency with an 80 Plus Gold rating.
- System builders seeking a fully modular power supply for cleaner cable routing.
Not Recommended For
- Users who prioritize established, top-tier PSU brands with extensive independent reviews.
- Budget builds where a lower wattage or efficiency rating would suffice at a lower cost.
Watch Out For
- Some users express general distrust in Redragon PSUs due to the brand's association with budget peripherals, suggesting potential long-term reliability concerns.
- The discrepancy between the product title's "Non-Modular" claim and the actual "Fully Modular" design in specifications could lead to incorrect purchase decisions.
- A California Proposition 65 warning is present on some retailer listings, indicating potential exposure to chemicals known to cause cancer or reproductive harm.
Full Specifications
| ASIN | B0F9YK5QJS |
| Brand | Redragon |
| Wattage | 850 watts |
| Model Name | RGMS-850W |
| Form Factor | ATX12V |
| Item Weight | 5.28 pounds |
| Manufacturer | Redragon |
| Connector Type | ATX 3.1 |
| Cooling Method | Air |
| Output Wattage | 850 |
| Item model number | RGMS-850W |
| Compatible Devices | PC |
| Product Dimensions | 5.91 x 3.35 x 5.51 inches |
| Item dimensions L x W x H | 5.91 x 3.35 x 5.51 inches |
What Buyers Say
The Redragon RGMS-850W PRO is a newer entrant in the PSU market, and while some users are wary of Redragon's PSU offerings due to their budget-oriented peripherals, specific feedback for this 850W Gold model points to a surprisingly capable unit. One user reported stable overclocking results with a 12100 CPU and A770 GPU, even outperforming a higher-wattage, more expensive PSU in certain scenarios. The compact size and quiet fan operation are frequently mentioned as benefits. However, the brand's overall reputation for PSUs still leads to skepticism among some PC builders.
“I was kinda nervous buying a Redragon PSU, but this 850W Gold thing actually powers my 4070Ti and 13600K without a hitch, and it's super quiet. My old PSU was louder than my GPU fans!”
Common Praise
- Stable power delivery for overclocked CPUs and high-power GPUs.
- Quiet operation from the 120mm FDB fan, especially with Zero RPM mode.
- Compact 150mm size fits well in various PC cases.
- Includes a 12VHPWR cable for modern NVIDIA graphics cards.
- Fully modular design simplifies cable routing.
Common Complaints
- General skepticism about Redragon's PSU quality due to their budget brand image.
- Confusion caused by the product title stating "Non-Modular" when the unit is actually fully modular.
- Lack of extensive independent professional reviews for this specific model, leading to uncertainty for some buyers.
Ownership Tips
- The cables are flexible enough for routing in a mid-tower case, but some might find them a bit stiff compared to premium options.
- The fan really does stay off during light use, making the system practically silent when not gaming.
- The included 12VHPWR cable feels sturdy and connects securely to the GPU.
- The compact size genuinely makes a difference in smaller cases, freeing up space near the PSU shroud.
Frequently Asked Questions
Is this power supply fully modular?
Yes, despite the product title, the Redragon RGMS-850W PRO is a fully modular power supply, allowing you to connect only the cables your system needs.
Does it come with the 12VHPWR cable for RTX 40-series GPUs?
Yes, this power supply includes a 12VHPWR cable in the package, making it compatible with high-performance NVIDIA 4090, 4080, and 4070Ti graphics cards.
What is the noise level of the fan?
The 120mm FDB fan operates at an average noise level of 36dB. Some versions also feature a Zero RPM mode, where the fan remains off until the internal temperature reaches 60℃ for silent operation.
What is the physical size of this power supply?
The Redragon RGMS-850W PRO has a compact 150mm size, which helps with compatibility in various PC cases and leaves more room for cable management.
Are the internal components high quality?
The power supply is built with 100% Japanese Capacitors, which are generally associated with greater reliability and durability in power supply units.
Buying Guide
When you're buying a power supply, you're essentially getting the heart of your PC. It converts wall power into the specific voltages your components need. You need enough wattage to power everything, especially your graphics card, and a good efficiency rating means less wasted energy and heat. Don't cheap out here; a bad PSU can damage your entire system.
Wattage (850 watts)
This is the maximum power your PSU can deliver. Think of it like the horsepower of a car; you need enough to get where you're going, especially if you have a powerful graphics card or CPU. An 850W unit is suitable for most high-end gaming PCs with a single GPU.
80 Plus Gold Certification
This rating indicates how efficiently the PSU converts AC power from your wall to DC power for your PC. Gold means it's at least 87% efficient at 20% load, 90% at 50% load, and 87% at 100% load. Higher efficiency means less electricity wasted as heat, saving you money on your power bill and keeping your case cooler.
ATX 3.1 & PCIe 5.1 Ready
These are the latest standards for power supplies, crucial for modern graphics cards like NVIDIA's 40-series. They ensure the PSU can handle the transient power spikes these GPUs can draw, preventing system crashes and ensuring stable performance. It's like having a modern fuel pump for a modern engine.
Fully Modular
This means you only plug in the power cables you actually need for your components. It's like having custom-length cables for everything. This reduces cable clutter inside your PC case, improving airflow and making your build look much cleaner compared to non-modular or semi-modular options.
Alternatives
If this PSU doesn't fit, look for other 80 Plus Gold or Platinum rated power supplies with ATX 3.1 and PCIe 5.1 compatibility, ensuring they include a 12VHPWR cable and offer a compact form factor if case size is a concern.



