be quiet! Pure Power 12 650W PSU | 80 Plus Gold | vs Cooler Master V750 SFX Gold 750W Fully Modular
Updated August 2026 — be quiet! Pure Power 12 650W PSU | 80 Plus Gold | wins on noise and power, Cooler Master V750 SFX Gold 750W Fully Modular wins on size and weight.
The be quiet! Pure Power 12 offers superior efficiency and quieter operation, while the Cooler Master V750 SFX Gold excels in compact design for mini-ITX builds.
Why be quiet! Pure Power 12 650W PSU | 80 Plus Gold | is better
Price
Pure Power 12 is significantly cheaper at $64.90.
Efficiency
Pure Power 12 has a higher efficiency rating of up to 92.7%.
Noise Level
Pure Power 12 is designed for quieter operation with a 120mm fan.
Why Cooler Master V750 SFX Gold 750W Fully Modular is better
Form Factor
V750 SFX Gold is ideal for mini-ITX builds.
Cable Design
V750 SFX Gold includes customized short cables for compact cases.
Power Density
V750 SFX Gold has a higher power density suitable for small builds.
Overall score
Specifications
| Spec | be quiet! Pure Power 12 650W PSU | 80 Plus Gold | | Cooler Master V750 SFX Gold 750W Fully Modular |
|---|---|---|
| Wattage | 650W | 750W |
| Certification | 80 PLUS Gold | 80 PLUS Gold |
| Fan Size | 120mm | 92mm |
| Modularity | Fully Modular | Fully Modular |
| Warranty | 10 Years | 10 Years |
Dimension comparison
Overview of the Products
The be quiet! Pure Power 12 650W PSU is priced at $64.90, while the Cooler Master V750 SFX Gold 750W retails for $161.80, making it about 150% more expensive. Despite the price difference, each power supply has unique features tailored to different needs. The Pure Power 12 is designed for quiet operations and efficiency, while the V750 SFX Gold targets mini-ITX builds with a compact form factor and high power density.
Efficiency and Performance
In terms of efficiency, the be quiet! Pure Power 12 boasts an 80 PLUS Gold certification with an efficiency rating of up to 92.7%. This high level of efficiency translates to lower power consumption and reduced costs over time. On the other hand, the Cooler Master V750 SFX Gold also holds an 80 PLUS Gold certification, claiming 90% efficiency. While both models are efficient, the Pure Power 12 edges out slightly in terms of maximum efficiency.
Design and Build Quality
The Pure Power 12 is a full-sized ATX power supply, while the V750 SFX Gold is a smaller SFX unit, making it ideal for compact builds. The Pure Power 12 features a temperature-controlled 120mm fan designed for quiet operation, whereas the V750 incorporates a 92mm Fluid Dynamic Bearing fan for reliable cooling. Both designs emphasize low noise levels, but the choice between them depends largely on the space and form factor of your build.
Cable Management
Cable management is a strong suit for both power supplies, but in different ways. The be quiet! Pure Power 12 offers fully sleeved and flat modular cables, enhancing airflow and simplifying installation. Conversely, the Cooler Master V750 SFX Gold features fully modular cables that are designed to reduce clutter and improve airflow, particularly in smaller cases. The V750 also includes customized short cables to fit mini-ITX builds, making it a better option for users with limited space.
Compatibility with Components
Both power supplies are ATX 3.1 compliant and support PCIe 5.1 graphics cards. The Pure Power 12 comes with one native 12V-2x6 connector and two PCIe 6+2-pin connectors, ensuring compatibility with a wide range of current and next-gen GPUs. Meanwhile, the V750 features a 90° 12VHPWR connector designed for enhanced electrical durability and safety, alongside standard PCIe connectors. This makes both power supplies versatile but with slightly different approaches to accommodating future graphics technologies.
Warranty and Customer Support
Both power supplies come with a generous 10-year warranty, reflecting the manufacturers' confidence in their products. This long warranty period is a significant advantage, providing peace of mind to users who may be concerned about durability and long-term performance. While both brands are reputable, customer experiences can vary, so it is advisable to check user feedback for specific insights into customer support.
Price Comparison
The be quiet! Pure Power 12 is priced at $64.90, making it about 17% cheaper than the Cooler Master V750 SFX Gold, which costs $161.80. This substantial price difference could be a deciding factor for budget-conscious consumers. However, the higher cost of the V750 may be justified for users seeking a compact solution for small form factor builds that may require its specific features.
Which should you buy?
Ultimately, the choice between the be quiet! Pure Power 12 and the Cooler Master V750 SFX Gold hinges on your specific needs and build requirements. If you prioritize efficiency, quiet operation, and cost-effectiveness, the Pure Power 12 is likely the better option. However, if you're building a mini-ITX system and need a compact, high-density power solution, the V750 is worth the investment. Each power supply serves its purpose well, making them both excellent choices within their respective niches.

