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GeeekPi 27W Power Supply for Raspberry Pi 5, PD vs iUniker 27W PD USB-C Power Supply for Raspberry Pi

Updated August 2026 — GeeekPi 27W Power Supply for Raspberry Pi 5, PD wins on price, iUniker 27W PD USB-C Power Supply for Raspberry Pi wins on size and weight.

The iUniker 27W PD USB-C Power Supply is the more economical choice with advanced GaN technology, while the GeeekPi offers solid performance at a slightly higher price.

Why GeeekPi 27W Power Supply for Raspberry Pi 5, PD is better

Price

GeeekPi is more expensive by $1.00

Output Options

GeeekPi has a wider voltage range

Brand Reputation

GeeekPi is well-known in the Raspberry Pi community

Why iUniker 27W PD USB-C Power Supply for Raspberry Pi is better

Price

iUniker is cheaper at $10.99

Technology

iUniker uses GaN technology for better efficiency

Portability

iUniker is smaller due to GaN design

Overall score

GeeekPi 27W Power Supply for Raspberry Pi 5, PD
85
iUniker 27W PD USB-C Power Supply for Raspberry Pi
88

Specifications

SpecGeeekPi 27W Power Supply for Raspberry Pi 5, PDiUniker 27W PD USB-C Power Supply for Raspberry Pi
Power DeliveryYesYes
GaN TechnologyNoYes
Voltage Options5V-15V5.1V-15V
Protection FeaturesYesYes
Input Voltage100-240V100-240V

Dimension comparison

GeeekPi 27W Power Supply for Raspberry Pi 5, PDiUniker 27W PD USB-C Power Supply for Raspberry Pi

Price Comparison

In terms of pricing, the iUniker 27W PD USB-C Power Supply is the more economical choice, priced at $10.99, which makes it about 8% cheaper than the GeeekPi 27W Power Supply, which retails for $11.99. This difference of $1.00 may seem minor, but when purchasing multiple units or for budget-conscious consumers, it can add up. Both products offer similar power delivery capabilities and are targeted toward Raspberry Pi 5 users, making their price point a significant consideration for potential buyers.

Power Delivery Technology

Both power supplies utilize Power Delivery technology, ensuring fast and efficient charging for compatible devices. However, the iUniker model is powered by GaN technology, which allows it to be smaller while maintaining high power output levels. This technology also contributes to better heat management, making it a more stable option during extended use. The GeeekPi model does not specify the technology it uses, which could be a consideration for users looking for the latest advancements in power supply design.

Compatibility

When it comes to compatibility, both the GeeekPi and iUniker power supplies are designed to work with the Raspberry Pi 5 variants, including the 2GB, 4GB, 8GB, and 16GB models. This versatility means that consumers can choose either option without worrying about compatibility issues. However, the iUniker’s mention of being specifically designed for the Raspberry Pi 5 might resonate more with consumers looking for tailored solutions, while the GeeekPi explicitly lists all compatible versions, ensuring no model is left out.

Output Options

Both power supplies offer multiple output voltage options, providing flexibility for various device requirements. The GeeekPi offers outputs of 5V at 5A, 9V at 3A, 12V at 2.25A, and 15V at 1.8A. Similarly, the iUniker provides 5.1V at 5A, 9V at 3A, 12V at 2.25A, and 15V at 1.8A. The slight difference in the 5V output voltage may not significantly affect performance, but it does indicate that the iUniker might offer a bit more versatility for devices that require a precise 5.1V. This could be an important point for users with specific voltage needs.

Safety Features

Safety is paramount when it comes to power supplies, and both brands include essential protective features. The GeeekPi power supply comes equipped with over-current protection, over-voltage protection, and short-circuit protection, ensuring the safety of connected devices. The iUniker model offers similar safety features, including over-voltage, over-current, and short circuit protection. This parity in safety features means that consumers can trust both products to protect their valuable devices effectively.

Design and Portability

In terms of design and portability, the compact form factor of both power supplies makes them travel-friendly. The GeeekPi adapter is noted for its convenience and compactness, making it easy to carry. The iUniker’s GaN technology allows for a smaller design without sacrificing power output, contributing to its portability. While both options are designed to be easy to transport, the iUniker may have a slight edge in terms of size and weight, which could be beneficial for users who frequently travel with their Raspberry Pi setups.

Brand Reputation

Brand reputation can influence purchasing decisions, and both GeeekPi and iUniker have established themselves in the tech accessories market. While specific sales ranks were not provided, both products seem to cater to consumers seeking reliable power solutions for their Raspberry Pi devices. Customers may prefer to choose based on previous experiences with either brand or recommendations from the Raspberry Pi community, which often favors products that deliver consistent performance and reliability.

Which should you buy?

Choosing between the GeeekPi 27W Power Supply and the iUniker 27W PD USB-C Power Supply ultimately depends on your specific needs and preferences. If price is your primary concern, the iUniker offers a more budget-friendly option at $10.99, compared to the GeeekPi’s $11.99. On the other hand, if you value the latest technology and potentially better thermal management, the iUniker’s GaN technology may make it a more appealing choice. Both power supplies provide multiple output options and essential safety features, ensuring a reliable performance for Raspberry Pi 5 users. In summary, consider your budget, preferred technology, and brand trust before making your final decision.