be quiet! Pure Power 13 M 1000W Power Supply, 80 vs Cooler Master V850 SFX Gold 850W Fully Modular
Updated August 2026 — be quiet! Pure Power 13 M 1000W Power Supply, 80 wins on wattage and price, Cooler Master V850 SFX Gold 850W Fully Modular wins on size and modularity.
The be quiet! Pure Power 13 M offers higher wattage and better efficiency, making it a strong choice for power users. However, the Cooler Master V850 SFX Gold excels in compact design and modularity.
Why be quiet! Pure Power 13 M 1000W Power Supply, 80 is better
Higher Wattage
1000W vs 850W
Better Efficiency
94.4% vs 90%
Lower Price
$139.90 vs $153.25
Why Cooler Master V850 SFX Gold 850W Fully Modular is better
Compact Size
SFX vs ATX
Fully Modular
Complete cable customization
Longer Warranty
10-year warranty vs standard
Overall score
Specifications
| Spec | be quiet! Pure Power 13 M 1000W Power Supply, 80 | Cooler Master V850 SFX Gold 850W Fully Modular |
|---|---|---|
| Certification | 80 PLUS Gold | 80 PLUS Gold |
| Cooling Type | Semi-Passive | FDB Fan |
| Form Factor | ATX | SFX |
| Cable Type | Modular | Fully Modular |
| Max Load | 1000W | 850W |
Dimension comparison
Pricing Comparison
The be quiet! Pure Power 13 M 1000W is priced at $139.90, making it about 9% cheaper than the Cooler Master V850 SFX Gold, which retails for $153.25. This price difference of roughly $13.35 may appeal to budget-conscious consumers seeking a reliable power supply without compromising on quality. While the Cooler Master offers slightly less wattage at 850W compared to the 1000W of the be quiet! model, the pricing structure suggests that consumers can opt for the more powerful unit at a more economical price.
Efficiency Ratings
Both power supplies boast impressive efficiency ratings, being certified with 80 PLUS Gold. The be quiet! Pure Power 13 M achieves an efficiency of up to 94.4%, which translates to lower power consumption and reduced operating costs. In comparison, the Cooler Master V850 SFX Gold also offers a commendable efficiency level, ensuring effective power transfer from the wall to components. However, with the be quiet! model's slightly higher efficiency rating, it may provide a marginally better performance in terms of energy savings over time.
Form Factor and Design
The be quiet! Pure Power 13 M is designed as a standard ATX power supply, while the Cooler Master V850 SFX Gold features a compact SFX design. This makes the Cooler Master more suitable for small form factor (SFF) builds, appealing to gamers and professionals who prioritize space-saving solutions. However, the standard size of the be quiet! unit allows for better airflow in larger cases, possibly leading to enhanced cooling performance for high-demand systems. Ultimately, the choice between these designs hinges on the user's case compatibility and personal preferences.
Cooling Solutions
Cooling performance is essential for maintaining stable operation under load. The be quiet! Pure Power 13 M utilizes a semi-passive zero-RPM cooling feature, enabling the fan to turn off completely during low load conditions, providing a quieter operation. On the other hand, the Cooler Master V850 SFX Gold employs a 92mm Fluid Dynamic Bearing fan, which is designed for reliable and efficient cooling. While both models prioritize low noise levels, the semi-passive approach of the be quiet! might be preferable for those aiming for a silent system under light workloads.
Modular Cabling
Modularity plays a significant role in cable management and airflow within a PC case. The Cooler Master V850 SFX Gold is fully modular, allowing users to connect only the cables necessary for their build, thus minimizing clutter. Meanwhile, the be quiet! Pure Power 13 M features modular cables as well, promoting a tidy internal layout. This aspect is vital for enhancing airflow and making future upgrades more manageable. Users looking for optimal customization in their builds may lean toward the fully modular design of the Cooler Master.
Future-Proofing Capability
Future-proofing is crucial for modern power supplies, especially with the increasing demand for high-performance components. The be quiet! Pure Power 13 M supports both ATX 3.1 specifications and has native integration for PCIe 5.1 GPUs. It offers 1000W of continuous power and can handle transient loads effectively. The Cooler Master V850 SFX Gold also supports ATX 3.1 and PCIe 5.1, delivering 600W to the GPU through its dedicated cables. While both units are designed to accommodate future advancements, the higher power output of the be quiet! unit may provide more headroom for overclocked systems.
Brand Reputation and Warranty
Brand reputation can significantly influence purchasing decisions. be quiet! is known for its focus on silent operation and high-quality components, making it a trusted choice among PC builders seeking quiet solutions. Cooler Master, on the other hand, has a strong reputation for reliable and innovative power supplies, including the V series. The Cooler Master V850 SFX Gold also comes with a 10-year warranty, reflecting confidence in its durability and performance. While both brands have their loyal followings, the extended warranty from Cooler Master could provide peace of mind for long-term users.
Which should you buy?
Choosing between the be quiet! Pure Power 13 M 1000W and the Cooler Master V850 SFX Gold primarily depends on your specific needs. If you require a higher wattage and prioritize silent operation, the be quiet! model is the better choice at $139.90. However, if you seek a compact, fully modular power supply with a long warranty, the Cooler Master at $153.25 may be more appealing. Ultimately, both power supplies offer excellent performance, but your decision will hinge on factors such as form factor, cooling preferences, and future-proofing needs.

