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iUniker Raspberry Pi Power Supply with Switch 15W vs R∞RasTech RasTech for Raspberry Pi 5 GaN PD 27W Power Supply

Updated August 2026 — iUniker Raspberry Pi Power Supply with Switch 15W wins on usability, R∞RasTech RasTech for Raspberry Pi 5 GaN PD 27W Power Supply wins on safety and output.

The RasTech power supply is the better choice for Raspberry Pi 5 users due to its higher output and safety features, while the iUniker is a budget-friendly option for older models.

Why iUniker Raspberry Pi Power Supply with Switch 15W is better

Price

iUniker is cheaper at $8.99

Switch

iUniker has an easy ON/OFF switch

Compatibility

iUniker supports older Raspberry Pi models

Why R∞RasTech RasTech for Raspberry Pi 5 GaN PD 27W Power Supply is better

Output Power

RasTech provides 27W compared to 15W

Safety Features

RasTech has 6-layer protection

Design

RasTech uses a modern USB-C plug

Overall score

iUniker Raspberry Pi Power Supply with Switch 15W
70
R∞RasTech RasTech for Raspberry Pi 5 GaN PD 27W Power Supply
85

Specifications

SpeciUniker Raspberry Pi Power Supply with Switch 15WR∞RasTech RasTech for Raspberry Pi 5 GaN PD 27W Power Supply
Power Output5V 3A5.1V 5A
Safety FeaturesNone specified6-layer protection
Plug TypeMicro USBUSB-C
Max Power15W27W
SwitchYesNo

Dimension comparison

iUniker Raspberry Pi Power Supply with Switch 15WR∞RasTech RasTech for Raspberry Pi 5 GaN PD 27W Power Supply

Overview of Power Supplies

When it comes to powering your Raspberry Pi, the choice between iUniker's power supply and RasTech's power supply can significantly impact performance. The iUniker model is priced at $8.99, while the RasTech option comes in at $12.99, making it about 17% more expensive. Both are designed to cater to different Raspberry Pi models, but they bring distinct features to the table that may influence your decision.

Compatibility

Compatibility is a crucial factor when selecting a power supply for your Raspberry Pi. The iUniker Raspberry Pi Power Supply is compatible with Raspberry Pi 2, 3, and 3 B+ models, but it does not support the Raspberry Pi 4. In contrast, the RasTech power supply is specifically designed for the Raspberry Pi 5, accommodating models with 2GB, 4GB, 8GB, and 16GB of RAM. If you own a Raspberry Pi 5, the RasTech model is the clear choice. For users with older Raspberry Pi models, the iUniker supply remains a suitable option.

Output Power and Efficiency

When considering output power, the RasTech power supply leads with a significant advantage. It delivers 5.1V and 5A, which means it can provide up to 27W of power. This is particularly beneficial for users who intend to run multiple peripherals simultaneously. The iUniker power supply, on the other hand, offers 5V and 3A, translating to a maximum output of 15W. This difference in output power could affect the overall performance of your Raspberry Pi, especially during demanding tasks.

Design and Usability

Design and usability can enhance the overall user experience. The iUniker power supply features an easy ON/OFF switch, which is a convenient addition for users who prefer manual control over their device. In contrast, the RasTech power supply lacks a physical switch but compensates with a sleek GaN design that is compact and efficient. The iUniker model's micro USB plug may also be more familiar for users with older devices, while the RasTech's USB-C plug aligns with newer technology trends.

Safety Features

Safety is a vital consideration when selecting power supplies for electronic devices. The RasTech power supply boasts a 6-layer protection function, which includes over-power protection, over-current protection, short-circuit protection, over-voltage protection, low-voltage protection, and electrostatic protection. This extensive safety array provides peace of mind for users, especially in high-load scenarios. The iUniker model does not specify any safety features, making it less appealing for users prioritizing device protection.

Price Comparison

Price is often a significant deciding factor when purchasing electronics. The iUniker Raspberry Pi Power Supply is available for $8.99, making it a budget-friendly option, especially for users of older Raspberry Pi models. In contrast, the RasTech power supply, priced at $12.99, may seem higher at first glance, but the additional features, higher output power, and safety measures could justify the extra $4.00 depending on your needs.

Customer Preferences

While specific customer preferences aren't detailed in the data, the features offered by each power supply suggest different target audiences. The iUniker appeals to those with older Raspberry Pi models who seek an economical solution without advanced features. On the other hand, the RasTech model likely attracts users who need robust performance and safety features for their Raspberry Pi 5, indicating a preference for quality over cost.

Which should you buy?

Ultimately, the choice between the iUniker Raspberry Pi Power Supply and the RasTech power supply hinges on your specific needs and which Raspberry Pi model you own. If you are using a Raspberry Pi 2, 3, or 3 B+, the iUniker model offers a cost-effective solution with a user-friendly switch. However, for Raspberry Pi 5 users, the RasTech power supply is the superior option, providing higher power output, advanced safety features, and compatibility with newer technology, despite its higher price tag.