be quiet! Pure Power 13 M 850W Power Supply

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89%
92%
Performance
94%
Efficiency
88%
Noise Level
91%
Modular Design
89%
Build Quality
85%
Cooling System
90%
Ease of Installation
93%
Compatibility with GPUs
90%
Future-Proofing (PCIe 5.1)
91%
Value for Money
82%
Customer Support
87%
Cable Length and Flexibility
More

Overview

The be quiet! Pure Power 13 M 850W Power Supply is a high-performance unit designed to meet the needs of modern PC builders. With its 80 Plus Gold certification, it ensures both energy efficiency and a quieter operation, especially under load. This fully modular power supply offers convenient cable management and keeps systems neat and organized. Supporting next-gen hardware, including PCIe 5.1 GPUs and demanding setups, it is built to handle even the most power-hungry components. Whether you're gaming, content creation, or building a new system, this power supply is up to the task.

Features & Benefits

The 80 Plus Gold certification makes this power supply an excellent choice for anyone looking to reduce energy consumption and noise. It boasts a robust 850W output, easily supporting high-end gaming PCs and overclocked systems. The unit is equipped with 4 PCIe 6+2-pin connectors, offering seamless compatibility with the latest GPUs, while its transient load support ensures it can handle peak power demands. Additionally, the semi-passive cooling system ensures that the fan only kicks in when needed, making it perfect for quieter builds.

Best For

This power supply is ideal for PC builders looking for a quiet, efficient, and reliable solution for their gaming or workstation setup. It’s perfect for gamers and content creators who use demanding hardware, like next-gen graphics cards. Users with overclocked systems will appreciate its high power handling and stable performance. The fully modular design makes it a great choice for anyone seeking a cleaner and more organized system, reducing both cable clutter and airflow disruption.

User Feedback

Users generally praise the silent operation of this power supply, especially during low or medium loads. Many appreciate its modular design, which simplifies installation and helps with cable management. Some note that the 850W output is ideal for most gaming setups and provides plenty of headroom for future upgrades. On the downside, a few users have mentioned that the unit could be better suited for extreme power users or setups requiring more wattage. Overall, it strikes a great balance between performance and noise reduction.

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Pros

  • This power supply operates quietly even under heavy load, making it ideal for noise-sensitive environments.
  • Users appreciate the full modular design, which helps maintain a clean build and optimal airflow.
  • The 80 Plus Gold certification ensures excellent energy efficiency, reducing power consumption and heat output.
  • It offers future-proofing with PCIe 5.1 compatibility, supporting next-gen GPUs for users planning long-term builds.
  • The 850W capacity is perfect for high-performance gaming setups and demanding workloads, including overclocking.
  • Its semi-passive cooling system provides silent operation during light loads, adding to the overall quietness.

Cons

  • Some users find the size and rigidity of the cables difficult to manage, especially in compact cases.
  • The PSU may be overkill for users with low to mid-range systems that don’t require such high wattage.
  • The semi-passive cooling can still produce some noise during extended periods of high performance.
  • While highly efficient, its price point is higher than some other PSUs with similar wattage.
  • Installation might be tricky for beginners, particularly when working with modular cables and tight case spaces.
  • A few users noted that the fan doesn’t always kick in as quickly as expected during heavy loads.

Ratings

The ratings for the be quiet! Pure Power 13 M 850W Power Supply reflect a thorough analysis of verified user reviews across multiple languages and platforms. Spam, bot, and incentivized reviews were filtered out, ensuring that only authentic and high-quality feedback informed the results. While this power supply is widely praised for its efficiency and quiet operation, some users have raised minor concerns about its wattage suitability for extreme power users. The overall scores balance strengths in performance, design, and reliability with some occasional feedback on power limitations and noise under heavy load.

Performance
92%
Many users are impressed with the power supply’s solid performance, particularly under heavy load. The 850W capacity ensures smooth operation, even during demanding tasks such as gaming or rendering. Additionally, the transient load support up to double its rated power adds a level of reliability that users value for high-performance builds.
Some users have mentioned that the power supply could be overkill for lower-end systems, where its full potential isn’t fully utilized. Additionally, a few reviewers noted that the PSU may not be suitable for setups requiring extremely high wattage, especially for multi-GPU configurations.
Efficiency
94%
The 80 Plus Gold certification is a major plus for buyers seeking energy efficiency. With up to 94.4% efficiency, this power supply helps reduce power consumption and overall energy costs. This efficiency is especially appreciated by users who are conscious of their electricity bills or aiming for a greener system.
While the efficiency is impressive, a handful of users have pointed out that efficiency levels tend to dip slightly under very high loads, especially during extreme overclocking. However, these instances are not widespread and often depend on the individual system setup.
Noise Level
88%
A standout feature of this PSU is its quiet operation, even under heavy load. The semi-passive cooling ensures that the fan only activates when necessary, maintaining a near-silent experience during light to moderate use. This feature is particularly appreciated by users with noise-sensitive environments, such as home offices or gaming setups.
A few users have reported that the fan can become noticeable under full load or during long gaming sessions. While it’s still quieter than many competing models, some buyers expected more consistent silent performance, even when the system is heavily taxed.
Modular Design
91%
The fully modular design allows users to only connect the cables they need, reducing clutter and improving airflow. This feature is a hit among PC builders who want a cleaner, more organized setup. The flexibility of cable length and customization options also enables better management for complex builds.
A small number of users felt that the modular cables were a bit too stiff or difficult to handle during installation. While not a major issue, this can be a bit frustrating for first-time builders who are not familiar with working with modular power supplies.
Build Quality
89%
Reviewers frequently highlight the premium build quality of this PSU. The solid construction and high-quality materials provide a reassuring sense of durability. Users feel confident that it will last for many years, even under continuous heavy use, which is crucial for a power supply of this caliber.
While most users are happy with the build quality, a few mentioned that the PSU is on the heavier side compared to some other models. This can make installation in smaller cases a bit trickier, and some users felt it was a bit bulky for their needs.
Cooling System
85%
The semi-passive cooling system is a key selling point for this power supply. It ensures that the fan only spins up when necessary, keeping noise levels low and preventing overheating during low to moderate usage. Users appreciate that the power supply doesn’t generate excessive heat, even during long hours of use.
A few users have mentioned that during intense gaming or heavy workloads, the cooling system doesn’t keep up as efficiently, leading to a slightly higher temperature and fan noise. While not a dealbreaker, it’s something to consider for those running high-powered systems for extended periods.
Ease of Installation
90%
Installation of this power supply is straightforward, especially with the modular design. Users have praised the clear instructions and well-labeled cables that make setup easy, even for those without extensive experience in building PCs. The fully modular cables contribute to a tidy and efficient installation process.
Some users have noted that while installation is generally simple, the modular cables may require some extra time to organize, especially in tighter cases. Additionally, there were mentions of some cables being slightly too stiff, which could complicate the process for first-time builders.
Compatibility with GPUs
93%
The PSU’s PCIe 5.1 support makes it an excellent choice for users building next-gen gaming rigs or high-performance workstations. It works seamlessly with modern GPUs, including those requiring the 12V-2x6 connector. This future-proofing capability ensures that users won’t need to upgrade the power supply as they add new hardware to their system.
While compatibility is generally excellent, some users with older GPUs have pointed out that they don’t fully benefit from the PCIe 5.1 support. This isn’t a major issue, but users looking for a power supply that caters to both old and new systems might find it slightly overkill for legacy setups.
Future-Proofing (PCIe 5.1)
90%
The inclusion of PCIe 5.1 compatibility is a key selling point for those looking to build systems that will remain relevant for years to come. This ensures that users can upgrade their components without worrying about future power requirements. It also positions the PSU well for upcoming hardware innovations.
Some buyers feel that the PCIe 5.1 support is not yet fully necessary for their current builds. For those with older systems or those not planning on upgrading soon, this feature might seem excessive, making it less cost-effective for certain users.
Value for Money
91%
Many users consider this power supply a solid investment, with its combination of performance, efficiency, and reliability. The 850W capacity, energy efficiency, and long-term durability contribute to a strong value proposition, especially for high-performance builds or future-proof systems. Buyers report that it delivers excellent performance for its price point.
Despite the overall positive feedback, some users feel that the higher price is a concern, especially if they don’t need all the advanced features. The additional cost for the 80 Plus Gold certification and PCIe 5.1 support may not justify the price for those with simpler builds or budget-conscious buyers.
Customer Support
82%
18%
When users have had to contact support, they’ve generally reported positive experiences. Support representatives are described as knowledgeable and responsive, offering helpful solutions for any issues that arise. The warranty service is often mentioned as a reassuring safety net for buyers.
A few users have voiced frustration with delayed response times and unclear troubleshooting advice. Some buyers expected faster resolutions for issues like defective units or missing components, which led to a slightly less favorable view of the customer support experience.
Cable Length and Flexibility
87%
The modular cables are long enough to suit most ATX cases, providing flexibility during installation. Many users appreciate the ability to customize cable lengths, which helps with better airflow and organization in their builds. The modular design also means cables aren’t left dangling when not in use, reducing clutter.
A few users have found that some cables feel a bit too stiff, making it harder to route them through tight spaces. While the length is generally sufficient, it might not be ideal for larger cases or builds that require more flexible cable management options.

Suitable for:

The be quiet! Pure Power 13 M 850W Power Supply is an excellent choice for high-performance PC builders, particularly those using power-hungry components such as next-gen GPUs and overclocked CPUs. Gamers, content creators, and professionals who require stable power delivery and energy efficiency will benefit from its 80 Plus Gold certification, which ensures reduced power consumption and minimal noise. Additionally, users who prioritize a clean build and efficient cable management will appreciate the full modular design. Those looking to future-proof their systems will find its PCIe 5.1 support particularly valuable, making it a suitable choice for long-term use in evolving setups.

Not suitable for:

However, this power supply may not be the best option for users with budget-conscious builds or older systems that don’t require the high power output or advanced features like PCIe 5.1 support. Those looking for a more affordable and compact PSU might find this unit’s higher price and large capacity unnecessary for low to mid-range setups. Additionally, the semi-passive cooling system, while quiet under normal conditions, may still generate noticeable noise during intense workloads or extended use, which could be a drawback for noise-sensitive users. Finally, users with small form-factor cases or limited space may find the PSU’s size and rigidity of cables challenging during installation.

Specifications

  • Wattage: The power supply delivers 850W, providing sufficient power for high-performance components and demanding setups.
  • Form Factor: This unit follows the ATX standard, ensuring compatibility with most mid and full tower PC cases.
  • Certification: It is 80 Plus Gold certified, ensuring high energy efficiency with up to 94.4% efficiency under typical loads.
  • Cooling Method: The power supply uses semi-passive cooling, with the fan operating only when necessary to minimize noise.
  • Fan Size: It is equipped with a 120mm fan, offering quiet operation without compromising on cooling performance.
  • Modular Design: The full modular design allows users to connect only the cables they need, improving cable management and airflow.
  • 12V Rail: This power supply uses a single 12V rail, providing stable and consistent power to high-demand components.
  • PCIe Connectors: It includes four 6+2-pin PCIe connectors, compatible with modern high-performance GPUs, including PCIe 5.1.
  • Compatibility: The unit is fully compatible with PCIe 5.1 GPUs, making it future-proof for upcoming graphics cards.
  • Cable Length: Cables are modular and customizable in length, allowing flexibility in setup and ensuring tidy cable management.
  • Power Protection: The power supply includes over-voltage, over-current, and short-circuit protection to safeguard components from electrical faults.
  • Transient Load Support: It supports transient load capabilities, handling power spikes up to twice its rated capacity for demanding applications.
  • Cooling Noise: The semi-passive cooling system ensures the power supply operates quietly, even under load, making it ideal for noise-sensitive environments.
  • Input Voltage: The input voltage range is 100-240V, making it compatible with a wide variety of global power grids.
  • Dimensions: The power supply measures 5.9 x 3.4 x 6.3 inches (150 x 85 x 160mm), fitting in standard ATX cases.
  • Warranty: The unit comes with a 5-year warranty, offering reliability and peace of mind for long-term use.
  • Efficiency Under Load: It provides up to 94.4% efficiency at typical loads, helping reduce energy consumption and heat generation.
  • Overclocking Support: This power supply is designed to support overclocked systems, providing stable power even under higher than normal loads.

FAQ

This power supply offers 850W of reliable power, perfect for high-performance gaming setups. Its 80 Plus Gold certification ensures high energy efficiency, while its modular design helps with cable management, reducing clutter for better airflow. Additionally, it supports next-gen PCIe 5.1 GPUs, future-proofing your system for upcoming hardware demands.

Installation is relatively straightforward, especially for users familiar with PC building. The full modular design allows you to connect only the cables you need, helping reduce clutter and improve airflow. However, beginners may find it a bit challenging to work with modular cables in tight cases.

Yes, the be quiet! Pure Power 13 M 850W Power Supply is suitable for overclocked systems. It handles transient loads effectively, offering power delivery up to twice its rated capacity, making it a great choice for users pushing their hardware to the limits.

Yes, this power supply is compatible with PCIe 5.1 GPUs, providing the necessary connectors (4x 6+2 pin) to support the latest graphics cards. This ensures you can upgrade to next-gen GPUs without worrying about power compatibility.

One of the standout features of this power supply is its quiet operation. The semi-passive cooling design allows the fan to remain off under low to moderate loads, and when the fan does activate, it runs quietly even under heavier loads, making it a great option for noise-sensitive environments.

Yes, this unit is designed with high power handling capacity, including support for transient loads up to twice its rated power. This makes it reliable during sudden spikes in power demand, which is especially important for high-performance or overclocked systems.

Yes, it comes with a 5-year warranty, offering peace of mind in case of any manufacturer defects or issues. This warranty duration is typical for premium PSUs and indicates the brand’s confidence in its product's durability and performance.

This power supply utilizes semi-passive cooling, meaning that the fan only spins up under higher loads. This feature helps maintain a quieter system during lighter tasks, making it ideal for users who prioritize a quiet PC environment while still handling demanding tasks when necessary.

While the be quiet! Pure Power 13 M 850W is an ATX-sized PSU and may be large for compact cases, it can still be used in most mid-sized or full-sized cases. However, users with ultra-compact builds may need to verify case compatibility and ensure proper airflow given its size.

For a basic PC build that doesn’t require a lot of power, this 850W PSU might be overkill. However, if you're planning on using a high-performance CPU, GPU, or overclocking, the extra power headroom, efficiency, and quiet operation make it a valuable investment for long-term performance and future-proofing.