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be quiet! Pure Power 12 650W PSU | 80 Plus Gold | vs Sirlyr 24 Pin RGB Cable,RGB PSU Cables Extensions

Updated August 2026 — be quiet! Pure Power 12 650W PSU | 80 Plus Gold | wins on noise level and warranty, Sirlyr 24 Pin RGB Cable,RGB PSU Cables Extensions wins on aesthetics.

The be quiet! Pure Power 12 650W PSU is the superior choice for performance and reliability, while the Sirlyr 24 Pin RGB Cable excels in aesthetic appeal.

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

Performance

Higher efficiency rating of 92.7%

Cooling

Temperature-controlled fan for silent operation

Warranty

10-year warranty for reliability

Why Sirlyr 24 Pin RGB Cable,RGB PSU Cables Extensions is better

Aesthetics

360-degree RGB lighting effects

Price

Lower cost at $38.99

Cable Management

Integrated design for neater appearance

Overall score

be quiet! Pure Power 12 650W PSU | 80 Plus Gold |
90
Sirlyr 24 Pin RGB Cable,RGB PSU Cables Extensions
70

Specifications

Specbe quiet! Pure Power 12 650W PSU | 80 Plus Gold |Sirlyr 24 Pin RGB Cable,RGB PSU Cables Extensions
TypePower SupplyRGB Cable
Connector12V-2x624 Pin
ModularityFully ModularNon-Modular
Cooling120mm FanNone
CompatibilityATX 3.1Universal

Dimension comparison

be quiet! Pure Power 12 650W PSU | 80 Plus Gold |Sirlyr 24 Pin RGB Cable,RGB PSU Cables Extensions

Overview

In this comparison, we will analyze two distinct products: the be quiet! Pure Power 12 650W PSU and the Sirlyr 24 Pin RGB Cable. The be quiet! PSU is designed for high-performance power supply needs, while the Sirlyr cable focuses on enhancing the aesthetic appeal of your PC setup. With prices at $64.90 and $38.99 respectively, these products serve different functions and audiences.

Performance and Efficiency

The be quiet! Pure Power 12 650W PSU excels in performance with an efficiency rating of up to 92.7%, certified by 80 PLUS Gold. This impressive efficiency not only leads to lower energy consumption but also results in cooler and quieter operation, making it an ideal choice for gaming PCs or quiet systems. In contrast, the Sirlyr 24 Pin RGB Cable is primarily an aesthetic upgrade, focusing on visual effects rather than performance. While it does not contribute to the power efficiency of your system, it enhances the overall look, which can be appealing for gamers seeking a vibrant setup.

Build Quality and Design

When it comes to build quality, the be quiet! PSU features a temperature-controlled 120mm fan that balances effective cooling with silent operation. Its LLC topology ensures robust voltage regulation and stability, making it a reliable choice for demanding builds. The PSU also comes with fully sleeved, flat modular cables that simplify installation and improve airflow. On the other hand, the Sirlyr 24 Pin RGB Cable is made from high-quality TPE/silicone material, allowing for easy bending and routing. Its integrated design hides extension cables, providing a neater look. However, it lacks the same level of performance-centric engineering found in the be quiet! PSU.

Compatibility

The be quiet! Pure Power 12 650W is an ATX 3.1 compatible power supply, equipped with both a 12V-2x6 connector for next-generation PCIe 5.1 graphics cards and two PCIe 6+2-pin connectors for current-gen GPUs. This versatility makes it a strong asset for future-proofing your PC. In contrast, the Sirlyr 24 Pin RGB Cable is designed to be compatible with all motherboards, thanks to its universal 24-pin connector. While both products offer compatibility, the PSU is aimed at ensuring your entire system operates efficiently, while the RGB cable focuses on enhancing aesthetic compatibility with RGB sync systems.

Cooling and Noise Levels

Cooling and noise levels are critical factors for any high-performance build. The be quiet! Pure Power 12 650W features a specially designed 120mm fan optimized for quiet operation. This allows users to enjoy a cooler system without the distraction of high noise levels. In comparison, the Sirlyr 24 Pin RGB Cable does not impact cooling or noise levels, as its purpose is solely aesthetic. Therefore, if quiet operation is a priority, the be quiet! PSU is the clear choice.

Aesthetic Appeal

For users seeking to elevate their PC's appearance, the Sirlyr 24 Pin RGB Cable is designed with aesthetics in mind. It features 360-degree lighting effects thanks to 120 embedded beads, providing a stunning visual experience that can sync with music or games. It’s an excellent option for those who want their setup to stand out. The be quiet! PSU, while functional and sleek, does not offer RGB lighting or aesthetic enhancements. Thus, if visual flair is a priority, the Sirlyr cable is the better option.

Price Comparison

The be quiet! Pure Power 12 650W PSU is priced at $64.90, while the Sirlyr 24 Pin RGB Cable retails for $38.99. This makes the RGB cable about 40% cheaper than the PSU. However, it’s essential to consider that the products serve different purposes; the PSU is a critical component for power delivery, while the RGB cable is an accessory meant to enhance the visual aspect of your system. Depending on whether you prioritize power efficiency or aesthetic enhancement, your purchasing decision may vary.

Warranty and Support

The be quiet! Pure Power 12 650W PSU comes with a substantial 10-year warranty, reflecting the brand’s confidence in its durability and performance. This long warranty period is a significant reassurance for consumers looking for reliability in a critical component. Conversely, the Sirlyr 24 Pin RGB Cable does not specify a warranty, which may be a consideration for buyers looking for long-term support. A longer warranty period is often indicative of a higher-quality product, especially in the realm of power supplies.

Which should you buy?

Deciding between the be quiet! Pure Power 12 650W PSU and the Sirlyr 24 Pin RGB Cable boils down to your specific needs. If you're looking for a reliable, high-performance power supply that ensures efficient operation and low noise levels, the be quiet! PSU is the superior choice. However, if your focus is on enhancing the visual appeal of your PC with RGB lighting effects, the Sirlyr cable provides a budget-friendly option. Ultimately, both products are excellent in their respective categories, but they cater to different priorities.