iUniker Raspberry Pi Power Supply with Switch 15W vs GeeekPi 27W Power Supply for Raspberry Pi 5, PD
Updated August 2026 — GeeekPi 27W Power Supply for Raspberry Pi 5, PD leads on price and output.
The iUniker power supply is a budget-friendly option for older Raspberry Pi models, while the GeeekPi offers superior versatility and safety features for the latest models.
Why iUniker Raspberry Pi Power Supply with Switch 15W is better
Price
iUniker is $3.00 cheaper
Simplicity
Easy ON/OFF switch
Compatibility
Works with older Raspberry Pi models
Why GeeekPi 27W Power Supply for Raspberry Pi 5, PD is better
Power Output
Higher output options with Power Delivery
Safety Features
Includes multiple built-in protections
Portability
Compact design for travel
Overall score
Specifications
| Spec | iUniker Raspberry Pi Power Supply with Switch 15W | GeeekPi 27W Power Supply for Raspberry Pi 5, PD |
|---|---|---|
| Brand | iUniker | GeeekPi |
| Input Voltage | 100-240V | 100-240V |
| Output Voltage | 5V | 5V/9V/12V/15V |
| Switch | Yes | No |
| UL Listed | Yes | No |
Dimension comparison
Overview
When it comes to powering your Raspberry Pi, choosing the right power supply is crucial for optimal performance. In this comparison, we will examine the iUniker Raspberry Pi Power Supply with Switch and the GeeekPi 27W Power Supply for Raspberry Pi 5. The iUniker model is priced at $8.99, while the GeeekPi model costs $11.99, making the iUniker about 25% cheaper than its competitor. Both options have unique features that cater to different Raspberry Pi models and user needs.
Compatibility
Compatibility is a significant factor when selecting a power supply for your Raspberry Pi. The iUniker Raspberry Pi Power Supply is specifically designed for Raspberry Pi 2, 3, and 3 B+ models, which makes it unsuitable for Raspberry Pi 4 users. On the other hand, the GeeekPi 27W Power Supply is compatible with the newer Raspberry Pi 5 models, including 16GB, 8GB, 4GB, and 2GB variants. If you own a Raspberry Pi 5, the GeeekPi is clearly the better choice, while users of older models will find the iUniker supply more fitting for their needs.
Power Delivery and Output
The power output of a power supply is critical for the effective functioning of your device. The iUniker supply provides a regulated output of 5V DC at 3.0A, which is adequate for Raspberry Pi 2 and 3 models. In contrast, the GeeekPi power supply offers a more versatile output with options for 5V at 5A, 9V at 3A, 12V at 2.25A, and 15V at 1.8A, thanks to its Power Delivery technology. This flexibility allows for faster and more efficient charging of compatible devices, making the GeeekPi a more powerful option overall.
Design and Features
Design and additional features can enhance the user experience. The iUniker power supply includes a convenient ON/OFF switch, allowing users to easily control power without unplugging the device. This feature is particularly useful for users who frequently connect and disconnect their Raspberry Pi. Conversely, the GeeekPi model is designed with a compact and portable form factor, making it travel-friendly. It also includes built-in safety features such as over-current, over-voltage, and short-circuit protection, ensuring the safety of your devices during use.
Price Comparison
Pricing is always a key consideration when making a purchase. The iUniker Raspberry Pi Power Supply is currently priced at $8.99, while the GeeekPi 27W Power Supply is $11.99. This means that the iUniker is about $3.00 cheaper, making it a more budget-friendly option, especially for users who are satisfied with lower power requirements. However, considering the additional features and flexibility of the GeeekPi, some users may find the extra cost justified.
Safety Features
Safety is paramount when dealing with electronic devices. The iUniker power supply is UL listed, indicating that it has passed rigorous safety standards. However, the GeeekPi power supply takes safety a step further with multiple built-in protections, including over-current, over-voltage, and short-circuit protection. These added safety features make the GeeekPi a safer choice for users who prioritize device protection, especially in high-demand scenarios.
Portability
Portability can make a significant difference for users who travel or move their devices frequently. The compact design of the GeeekPi 27W Power Supply makes it easy to carry, ensuring that you have a reliable power source wherever you go. In contrast, the iUniker model does not emphasize portability as much. Users who need a power supply that is easy to transport might prefer the GeeekPi for its travel-friendly design.
User Experience
User experience often hinges on how well a product meets expectations. The iUniker Raspberry Pi Power Supply is straightforward and easy to use, especially with its ON/OFF switch feature, which many users find convenient. However, the GeeekPi 27W model's versatility and robust safety features may enhance the user experience for those utilizing the higher power requirements of the Raspberry Pi 5. Ultimately, user preference will dictate which experience is more appealing depending on their specific needs.
Which should you buy?
Choosing between the iUniker Raspberry Pi Power Supply and the GeeekPi 27W Power Supply depends largely on your specific needs and the model of Raspberry Pi you own. If you are using a Raspberry Pi 2, 3, or 3 B+, the iUniker model offers a cost-effective solution at $8.99 with a user-friendly ON/OFF switch. In contrast, if you own a Raspberry Pi 5 and require a more powerful and versatile power supply, the GeeekPi at $11.99 is worth the investment due to its higher output options and safety features. Ultimately, assess your needs carefully before making a decision to ensure you select the best power supply for your Raspberry Pi experience.

