Corsair RM850 Fully Modular Power Supply

Corsair RM850 Fully Modular Power Supply — image 1
Corsair RM850 Fully Modular Power Supply — image 2
Corsair RM850 Fully Modular Power Supply — image 3
Corsair RM850 Fully Modular Power Supply — image 4
Corsair RM850 Fully Modular Power Supply — image 5
Corsair RM850 Fully Modular Power Supply — image 6
Corsair RM850 Fully Modular Power Supply — image 7
87%
94%
Quiet Operation
91%
Cable Management
89%
Cooling Performance
92%
Energy Efficiency
90%
Build Quality
88%
Durability & Longevity
87%
Setup & Installation
85%
Compatibility
83%
Aesthetic Appeal (White Version)
92%
Value for Money
80%
Size & Form Factor
78%
Customer Support
More

Overview

The Corsair RM850 Fully Modular Power Supply is designed for high-performance systems, offering 850W of reliable power. This modular PSU is ideal for gamers, content creators, and PC enthusiasts who demand clean and efficient energy delivery. 80 Plus Gold certification ensures excellent energy efficiency, minimizing wasted power. Additionally, the compact design, combined with a 140mm rifle bearing fan, offers quiet operation even under load. This power supply provides all the necessary features for a smooth, uninterrupted computing experience, especially when dealing with demanding hardware setups.

Features & Benefits

The fully modular design of this Corsair power supply stands out, allowing users to connect only the cables they need, reducing cable clutter. This not only improves airflow but also enhances the overall build aesthetics by minimizing excess cables. The Zero RPM fan mode ensures near-silent operation when the load is low, making it perfect for users who prioritize a quiet computing environment. With triple EPS12V connectors, it is fully compatible with modern high-end graphics cards and motherboards, providing both flexibility and future-proofing for demanding setups.

Best For

This modular PSU is ideal for PC builders and enthusiasts seeking a high-quality power supply that combines performance with durability. Gamers and users running power-hungry setups will appreciate the stable 850W output, which supports even the most demanding CPUs and GPUs. If you prefer a clean, organized PC build, the RM850’s fully modular design allows for custom cable management, making it a great choice for tidy, professional-looking rigs. Additionally, those looking for a quiet yet powerful solution will find the RM850’s cooling system well-suited for long-term use.

User Feedback

Users consistently praise this Corsair power supply for its quiet operation and efficient cooling, even under heavy load. Many also mention how much they appreciate the fully modular design, which greatly simplifies cable management and keeps their builds neat. However, some users have noted that the product’s compact size might not fit all PC cases, particularly in more cramped environments. On the positive side, the white version of the power supply has received attention for adding a sleek aesthetic to custom builds, though it’s not for everyone. Overall, it remains highly rated for reliability and performance.

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Pros

  • This modular PSU is praised for its <b>quiet operation</b>, even under load, thanks to the Zero RPM mode.
  • The fully modular design makes cable management <b>easy and efficient</b>, perfect for building custom rigs.
  • Its 80 Plus Gold certification ensures excellent <b>energy efficiency</b>, saving on electricity over time.
  • Gamers with high-performance systems appreciate the <b>reliable power delivery</b> for power-hungry components.
  • The compact size and 140mm fan provide <b>efficient cooling</b> while keeping noise levels low.
  • Users value the <b>long-term reliability</b> offered by 105°C-rated capacitors.

Cons

  • Some users found the cables to be a bit <b>stiff and short</b>, making installation in tight spaces challenging.
  • This PSU may be overkill for users with <b>lower power demands</b> or basic setups.
  • While the cooling is generally quiet, a few users noted the fan can become <b>noisy under heavy loads</b>.
  • The higher wattage may not be necessary for <b>small form factor builds</b>, making it less ideal for compact cases.
  • Some users mentioned the <b>lack of extra cables</b> in the box, requiring separate purchases for certain builds.
  • The PSU's price point may be considered <b>expensive for budget-conscious buyers</b>.

Ratings

The Corsair RM850 Fully Modular Power Supply has garnered praise across global platforms for its performance and quality. After analyzing verified user reviews worldwide, including multiple languages, we have filtered out spam, bot, and incentivized feedback to ensure only authentic, high-quality insights contribute to the following scores. Both the strengths and pain points reported by users are reflected in these ratings, offering a balanced perspective from a diverse range of sources.

Quiet Operation
94%
Users consistently praise the silent performance, especially when the unit is under low loads. The Zero RPM fan mode ensures that the PSU remains nearly inaudible, even during extended gaming sessions or heavy tasks. This feature is ideal for those who value a quiet system without sacrificing performance.
However, a small number of users have mentioned that while the fan remains silent, the power supply does emit a faint hum under certain conditions. Some have also pointed out that the fan could be louder during periods of high load, which may be noticeable in a quiet room.
Cable Management
91%
The fully modular design is a standout feature, with users highlighting the ease of cable management. Many report that it helped them create a much cleaner, more organized build with minimal cable clutter. This is especially appreciated in custom PC setups where aesthetics and airflow are important.
On the downside, a few users mentioned that, while the modularity is great, the included cables are somewhat stiff, making it harder to bend them around tight spaces. Additionally, a small number of buyers felt that some cables were a bit short for certain configurations.
Cooling Performance
89%
The cooling performance of this PSU is generally well-regarded, with its 140mm rifle bearing fan providing ample airflow. Users report that it keeps the system cool even under load, with efficient cooling preventing overheating issues. The fan operates quietly and maintains a stable temperature, even during demanding tasks.
However, a few reviewers noted that under very high loads, the fan can become noticeable, particularly if the system is in a poorly ventilated case. Some users also felt the cooling could be better in extreme conditions, where more airflow might be required to maintain optimal temperature levels.
Energy Efficiency
92%
The 80 Plus Gold certification is widely appreciated by users, ensuring energy efficiency and lower electricity consumption. Many buyers noticed lower electricity bills and less heat generation compared to older, less efficient power supplies. This makes the product a solid choice for long-term use without sacrificing performance.
A small number of users have expressed disappointment that, while it is energy efficient, the power supply doesn't seem to offer a noticeable reduction in noise or heat at very high loads. These users might have been expecting more substantial differences in energy savings or quieter operation when running demanding applications.
Build Quality
90%
The build quality of the PSU is robust, with users highlighting its solid construction and premium feel. The 105°C-rated capacitors add to the overall reliability, making it a durable option for users who need a power supply that can last for years. The materials used in the fan and other components also contribute to a well-made product.
While most users are happy with the build quality, a few have mentioned that the power supply feels heavier than expected, which could be a concern for those with smaller or more compact cases. Some also noted that the fan's bearing may wear down over time, although this was not a common complaint.
Durability & Longevity
88%
Users consistently report that the durability and longevity of this PSU are strong points. The high-quality components, including 105°C-rated capacitors, provide users with confidence that it will stand the test of time. Many buyers mention having had the PSU running for months without any performance degradation.
Some buyers raised concerns about the potential for long-term wear, particularly with the fan or connectors. A few users have experienced early signs of wear, though these instances appear to be rare. A few also noted that the warranty could be longer to further reinforce long-term reliability.
Setup & Installation
87%
The setup and installation process is straightforward for most users. The fully modular design makes it easy to install only the cables that are needed, which simplifies the wiring process. Additionally, the compact form factor allows it to fit in most mid-tower cases without any issues.
While installation is generally easy, some users mentioned that the included cable lengths may be too short for certain setups, particularly in larger cases. Additionally, a few felt the PSU's connectors could have been arranged more intuitively, as it requires careful attention during installation.
Compatibility
85%
The PSU is praised for its broad compatibility, with multiple EPS12V connectors that allow it to work seamlessly with modern motherboards. Many users have confirmed that it can handle power-hungry components like high-end GPUs and CPUs, making it ideal for custom gaming rigs and workstations.
On the other hand, some users noted compatibility issues with older cases or budget motherboards that lack the necessary connectors. A few also pointed out that the cables may not fit in compact or unusual chassis layouts without some adjustment or custom modifications.
Aesthetic Appeal (White Version)
83%
The white version of this PSU has received positive feedback for its aesthetic appeal, especially from those building light-colored or unique custom PCs. The clean, minimalist look fits well in many setups, providing a stylish addition to any PC build. It's also a good match for users who prioritize design alongside performance.
However, a few users mentioned that the white version can get dirty easily, requiring more frequent cleaning to maintain its pristine appearance. Additionally, some felt the white coloring made the power supply more prone to showing signs of wear compared to darker models.
Value for Money
92%
Many users agree that this modular PSU provides great value for its price. The combination of quiet operation, high energy efficiency, and a fully modular design makes it an attractive choice for gamers and PC builders. Most felt they received high-end features at a reasonable price point, making it a solid investment.
Despite the generally positive reception, a few buyers felt that the cost was slightly higher compared to similar power supplies from other brands. These users felt that while the product performs well, they could find more budget-friendly options with similar capabilities, especially for less demanding setups.
Size & Form Factor
80%
20%
The compact size of this power supply makes it a great fit for a wide range of PC cases, even smaller ones. Its form factor allows for easy installation and maximizes space for airflow, which is crucial for maintaining system temperature. Many users appreciate that it doesn't take up unnecessary space in their builds.
However, some users with larger cases noted that the smaller size may limit the number of cables that can be routed or the PSU's ability to power extremely power-hungry systems. A few also mentioned that the compact design sacrifices some extra cooling capacity compared to larger, more powerful PSUs.
Customer Support
78%
22%
Several users have reported positive experiences with Corsair's customer support, praising the responsiveness and willingness to resolve issues. Many felt that any problems or questions they had were addressed quickly, and the support team was knowledgeable about their products.
Not all users shared the same experience. A few buyers had difficulties getting timely responses or felt that the support team was unhelpful when troubleshooting certain issues. These users expressed frustration with the lack of direct assistance or the time it took to resolve their concerns.

Suitable for:

The Corsair RM850 Fully Modular Power Supply is ideal for PC builders, especially those working on high-performance setups or custom gaming rigs. Its fully modular design makes it perfect for enthusiasts who value neat cable management and a clean build. The 80 Plus Gold certification ensures energy efficiency, which is a key benefit for users concerned about electricity consumption and long-term savings. Gamers with power-hungry setups, including high-end GPUs and CPUs, will also appreciate its reliable power delivery and quiet performance, particularly in the Zero RPM mode. This PSU is an excellent choice for those who prioritize both efficiency and longevity in their builds.

Not suitable for:

While this modular PSU offers great features, it may not be the best choice for users with compact or budget cases. Some buyers found the cables a bit stiff and short, making installation more challenging in tight spaces. Those who do not need the higher wattage or the modular design may find similar, less expensive options that suit their needs. Furthermore, users who require ultra-silent cooling under heavy loads may find that the fan gets louder during high-demand applications, especially in poorly ventilated cases. This power supply might not be the best fit for those seeking a budget-friendly or ultra-compact solution.

Specifications

  • Wattage: 850W power output, designed for high-performance systems and gaming rigs.
  • Form Factor: ATX form factor, compatible with most standard PC cases.
  • Certification: 80 Plus Gold certified for high energy efficiency.
  • Modular Design: Fully modular design to reduce cable clutter and improve airflow.
  • Fan Size: 140mm rifle-bearing fan for efficient cooling and quiet operation.
  • Zero RPM Mode: Fan operates in Zero RPM mode at low loads for near-silent performance.
  • Cooling Method: Air-based cooling with a high-quality rifle-bearing fan for reliability and quietness.
  • Capacitors: 105°C-rated capacitors for improved reliability and longevity.
  • EPS12V Connectors: Triple EPS12V connectors for compatibility with modern high-performance motherboards.
  • Dimensions: 6.3 x 5.91 x 3.39 inches, compact enough for most ATX-compatible cases.
  • Weight: 1.65 kg, designed for a solid, durable build with manageable weight.
  • Compatibility: Ideal for custom PC builds, gaming systems, and other power-hungry setups.
  • Cable Length: Includes sufficient cable lengths for standard and larger ATX cases.
  • Operating Temperature: Designed to operate within a range of temperatures up to 40°C for safe usage.
  • Warranty: Comes with a 10-year warranty for long-term peace of mind.
  • Efficiency: 80 Plus Gold certification ensures reduced power loss and optimal system performance.
  • Noise Level: Low noise output, especially in Zero RPM mode during light loads.
  • Protection Features: Includes over-voltage, over-current, and short-circuit protection for safe operation.
  • Fan Type: Rifle-bearing fan technology for smoother operation and quieter performance.

FAQ

The Corsair RM850 is an 850W fully modular power supply, designed to provide reliable power for high-performance PCs and gaming rigs.

The fully modular design of this PSU allows you to connect only the cables you need, reducing clutter and improving airflow inside your case. This makes cable management much easier and helps keep your build looking clean and organized.

The Zero RPM fan mode enables the power supply's fan to remain completely silent when the load is low or during idle periods. This feature ensures that the PSU operates quietly under low-demand conditions, while the fan only activates when needed to cool the system.

Yes, this power supply is designed for compatibility with modern motherboards and includes triple EPS12V connectors, making it a great choice for gaming systems and high-performance builds.

The RM850 is 80 Plus Gold certified, meaning it operates with high energy efficiency, reducing wasted energy and minimizing heat production. This certification ensures that you get better performance for your power consumption, leading to long-term savings on your energy bill.

The 105°C-rated capacitors in the RM850 enhance its reliability and longevity by ensuring stable performance even in high-temperature environments. This means the PSU is built to handle stress over the long term and is less likely to fail under heavy loads.

The RM850 has a compact design with dimensions of 6.3 x 5.91 x 3.39 inches, making it suitable for most standard ATX cases. However, if you're building a very small or compact PC, you may want to verify that the PSU fits in your case before purchase.

Many users praise the RM850 for its quiet operation, especially when the fan is in Zero RPM mode. However, under heavy loads, a few users reported the fan becoming audible, though it is generally quieter than many competing models.

Yes, the Corsair RM850 is an excellent choice for users planning future upgrades. It has enough power to handle demanding components like high-end GPUs and CPUs, and its modular design makes it easy to upgrade or customize cables as your system evolves.

Some users noted that the RM850 might be overkill for users with basic systems or smaller builds, especially if you don't require 850W of power. Additionally, the PSU's cables may be a bit stiff, which can make installation in tight spaces more challenging.