R∞RasTech RasTech for Raspberry Pi 5 GaN PD 27W Power Supply vs Sirlyr PSU Extension Cable Kit - Custom Sleeved
Updated August 2026 — R∞RasTech RasTech for Raspberry Pi 5 GaN PD 27W Power Supply wins on output and protection, Sirlyr PSU Extension Cable Kit - Custom Sleeved wins on awg and price.
The RasTech power supply is a cost-effective and reliable choice for Raspberry Pi users, while the Sirlyr kit offers aesthetic and performance enhancements for PC builders.
Why R∞RasTech RasTech for Raspberry Pi 5 GaN PD 27W Power Supply is better
Price
RasTech is $12.99, cheaper than Sirlyr at $19.99.
Target Audience
RasTech is specifically designed for Raspberry Pi users.
Power Delivery
RasTech delivers direct power to devices.
Why Sirlyr PSU Extension Cable Kit - Custom Sleeved is better
Aesthetics
Sirlyr offers custom sleeved cables for better visuals.
Cable Quality
Sirlyr uses 16 AWG cables for superior stability.
Versatility
Sirlyr kit accommodates various PC builds.
Overall score
Specifications
| Spec | R∞RasTech RasTech for Raspberry Pi 5 GaN PD 27W Power Supply | Sirlyr PSU Extension Cable Kit - Custom Sleeved |
|---|---|---|
| Power Type | GaN Power Supply | Cable Extension |
| Max Output | 5.1V/5A | N/A |
| Protection Features | 6-layer | N/A |
| Cable Material | N/A | PET |
| User Experience | Plug-and-Play | Requires Assembly |
Dimension comparison
Overview of the Products
In this comparison, we will examine the RasTech for Raspberry Pi 5 GaN PD 27W Power Supply and the Sirlyr PSU Extension Cable Kit. The RasTech power supply is priced at $12.99, while the Sirlyr extension cable kit costs $19.99, making the RasTech about 35% cheaper. Both products cater to distinct needs within the power supply category, targeting different types of users. The RasTech product is specifically designed for Raspberry Pi 5 users, while the Sirlyr kit is aimed at PC builders looking for customization options.
Target Audience
The RasTech power supply is ideal for Raspberry Pi enthusiasts who require a reliable and efficient power source for their devices. With its GaN technology, it delivers up to 5.1V and 5A, ensuring that even the most power-hungry peripherals can operate smoothly. On the other hand, the Sirlyr extension cable kit appeals to gamers and DIY PC builders who want to enhance their system's aesthetics and performance. Its robust 16 AWG cables cater to systems running between 800W and 1600W, making it suitable for high-performance setups.
Build Quality and Design
In terms of build quality, the RasTech power supply boasts a six-layer protection function that includes over-current, short-circuit, and electrostatic protection, establishing it as a high-quality power solution. Its compact design is complemented by a 1.3-meter length, allowing for versatile placement. Conversely, the Sirlyr kit features custom sleeved cables made from pearl white PET material, designed to be both robust and visually appealing. This not only enhances the appearance of a PC build but also ensures optimal current transfer thanks to gold-plated terminals.
Power Delivery and Performance
The RasTech power supply delivers a powerful performance with a maximum output of 27W, ensuring that connected devices receive stable power without dropping below the required voltage. It can supply 5A at 5.1V, which is essential for powering Raspberry Pi 5 and its peripherals. In contrast, the Sirlyr extension cable kit serves to enhance the existing power supply's capabilities rather than provide power directly. It is designed for high-end setups, making it a strong contender for users needing enhanced stability during high loads, particularly for high-powered graphics cards or CPUs.
Compatibility
Compatibility is a strong point for both products, albeit in different contexts. The RasTech power supply is specifically made for Raspberry Pi 5 models across all memory configurations (16GB/8GB/4GB/2GB), making it a focused solution for Pi users. The Sirlyr cable kit, however, provides a comprehensive extension set that includes various connections compatible with a wide range of power supplies. This includes 1x24-pin ATX and 2x8 pin connectors, ensuring it can accommodate most PC builds, which provides more versatility for users looking to customize their setups.
Price Comparison
When it comes to pricing, the RasTech power supply is available at $12.99, making it a cost-effective solution for Raspberry Pi users. In comparison, the Sirlyr PSU extension cable kit is priced at $19.99, which is about 54% more expensive than the RasTech option. This price difference reflects the distinct functionalities each product offers. While the RasTech delivers direct power to devices, the Sirlyr kit enhances existing setups, which may justify its higher price for users seeking aesthetic and functional upgrades.
User Experience and Convenience
User experience can vary significantly between these two products. The RasTech power supply is plug-and-play, designed for immediate use with Raspberry Pi devices, which is a major convenience for users who may not have technical expertise. Its simplicity and effectiveness make it a user-friendly choice. Conversely, the Sirlyr extension cable kit requires some assembly and knowledge of PC building to integrate properly, which may present a challenge for novice users. However, for those familiar with PC building, the aesthetic appeal and enhanced performance of the Sirlyr kit can be rewarding.
Which should you buy?
Choosing between the RasTech for Raspberry Pi 5 GaN PD 27W Power Supply and the Sirlyr PSU Extension Cable Kit ultimately depends on your specific needs. If you are a Raspberry Pi user looking for an efficient, reliable power source at an attractive price of $12.99, the RasTech is the clear choice. However, if you are a PC builder aiming to enhance your system with visually appealing and high-performance cables, the Sirlyr kit, despite its higher price of $19.99, offers more customization options and stability for high-powered setups.

