vsversusfinder

Auotac 850W Fully Modular Power Supply, 80+ Gold vs be quiet! Pure Power 12 650W PSU | 80 Plus Gold |

Updated August 2026 — Auotac 850W Fully Modular Power Supply, 80+ Gold wins on modularity and connector type, be quiet! Pure Power 12 650W PSU | 80 Plus Gold | wins on noise level and efficiency.

The Auotac 850W offers higher wattage and enhanced cooling features, while the be quiet! PSU is more affordable and quieter. Choose based on your specific needs.

Why Auotac 850W Fully Modular Power Supply, 80+ Gold is better

Higher Wattage

850W vs 650W

Cooling

140mm RGB fan vs 120mm fan

Included Tools

Comes with installation toolkit

Why be quiet! Pure Power 12 650W PSU | 80 Plus Gold | is better

Lower Price

$64.90 vs $79.99

Quieter Operation

Designed for silent performance

Versatile Compatibility

More connectors for GPUs

Overall score

Auotac 850W Fully Modular Power Supply, 80+ Gold
85
be quiet! Pure Power 12 650W PSU | 80 Plus Gold |
78

Specifications

SpecAuotac 850W Fully Modular Power Supply, 80+ Goldbe quiet! Pure Power 12 650W PSU | 80 Plus Gold |
Certification80 PLUS Gold80 PLUS Gold
ModularFully ModularFully Modular
ATX Standard3.13.1
PCIe Support5.15.1
CapacitorsJapanese 105°CStandard

Dimension comparison

Auotac 850W Fully Modular Power Supply, 80+ Goldbe quiet! Pure Power 12 650W PSU | 80 Plus Gold |

Overview of Power Supplies

When it comes to power supplies, efficiency and reliability are key factors. The Auotac 850W Fully Modular Power Supply and the be quiet! Pure Power 12 650W PSU are both 80 PLUS Gold certified, ensuring high efficiency in power delivery. The Auotac model is priced at $79.99, while the be quiet! model is available for $64.90, making it about 17% cheaper than the Auotac. Each product offers distinct features aimed at different needs, allowing users to choose based on their specific requirements.

Performance Efficiency

Both power supplies boast impressive efficiency ratings, with Auotac providing 92% efficiency and be quiet! slightly edging out with up to 92.7% efficiency. This difference, while minimal, could translate to lower power consumption and reduced electricity costs over time. The Auotac model delivers stability and can handle power spike resistance efficiently, making it suitable for high-performance systems. Conversely, the be quiet! model excels in low noise operation, making it a great choice for those prioritizing a quieter computing experience.

Modular Design

The Auotac power supply features a fully modular design, which helps eliminate cable clutter, optimize airflow, and improve thermal performance. This is particularly beneficial for users looking to maintain a clean and organized build. Meanwhile, the be quiet! PSU also employs a modular design but focuses on fully sleeved and flat cables that enhance airflow further. Both designs facilitate easier installations, but the aesthetic and organizational benefits of the Auotac's dragon-patterned cables may appeal more to enthusiasts.

Compatibility and Future-Proofing

In terms of compatibility, both models support ATX 3.1 and PCIe 5.1, making them ready for next-generation graphics cards. The Auotac includes a dual-colour 12V-2x6 native connector, which helps users easily identify proper connections. On the other hand, the be quiet! unit features both the native 12V-2x6 connector and additional PCIe 6+2-pin connectors, offering versatility for current and future GPUs. This makes the be quiet! PSU slightly more adaptable for various builds.

Cooling Solutions

Cooling performance is crucial for maintaining system stability and longevity. The Auotac power supply is equipped with a 140mm RGB low-noise smart fan that outperforms typical 120mm fans in terms of heat dissipation and durability. It also features an adjustable RGB lighting model, allowing users to customize the aesthetics of their build. The be quiet! PSU, however, utilizes a 120mm temperature-controlled fan designed for optimal airflow with reduced turbulence. While both fans are effective, the Auotac’s larger fan may provide an edge in cooling efficiency.

Build Quality and Reliability

The Auotac power supply uses 100% Japanese-made 105°C electrolytic capacitors, which enhances its reliability and stability, especially under heavy loads. This is crucial for users who push their systems to the limits. The be quiet! model, while also built for reliability, emphasizes its LLC topology for voltage regulation, ensuring consistent power delivery. Both brands offer 10-year warranties, underscoring their commitment to quality and customer satisfaction.

User Experience and Installation

Installation experience can significantly affect user satisfaction. The Auotac power supply includes a toolkit comprising a PSU tester, cable management comb, and cable ties, which can facilitate a smoother installation process, especially for beginners. The be quiet! PSU, with its fully sleeved cables, aims to simplify the installation experience by reducing the effort needed to manage cables effectively. However, the additional tools provided with the Auotac may give it an edge for those who are less experienced.

Which should you buy?

Choosing between the Auotac 850W Fully Modular Power Supply and the be quiet! Pure Power 12 650W PSU depends on your specific needs. If you require higher wattage, enhanced cooling with RGB features, and extensive installation tools, the Auotac for $79.99 may be the better choice. However, if you prioritize a quieter operation, lower price point at $64.90, and versatile compatibility for both current and next-gen graphics cards, the be quiet! PSU is an excellent option. Ultimately, both power supplies offer great efficiency and reliability, making either a solid investment for your PC build.