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iUniker GaN PD 27W 5.1V 5A 27W PD Power Supply USB-C for Raspberry Pi 5 vs GIGABYTE P550SS Power Supply - PCIe 5.0

Updated August 2026The iUniker GaN PD 27W power supply is a budget-friendly option for Raspberry Pi users, while the GIGABYTE P550SS is a robust choice for high-performance systems.

The iUniker GaN PD 27W power supply is a budget-friendly option for Raspberry Pi users, while the GIGABYTE P550SS is a robust choice for high-performance systems.

Why iUniker GaN PD 27W 5.1V 5A 27W PD Power Supply USB-C for Raspberry Pi 5 is better

price

iUniker is significantly cheaper at £13.79

size

iUniker is compact and portable

target audience

iUniker is tailored for Raspberry Pi users

Why GIGABYTE P550SS Power Supply - PCIe 5.0 is better

performance

GIGABYTE has 80 PLUS Silver certification

protection

GIGABYTE offers extensive safety features

compatibility

GIGABYTE supports a wide range of PC builds

Overall score

iUniker GaN PD 27W 5.1V 5A 27W PD Power Supply USB-C for Raspberry Pi 5
65
GIGABYTE P550SS Power Supply - PCIe 5.0
85

Specifications

SpeciUniker GaN PD 27W 5.1V 5A 27W PD Power Supply USB-C for Raspberry Pi 5GIGABYTE P550SS Power Supply - PCIe 5.0
BrandiUnikerGigabyte
Input Voltage100-240V230V
Output Options5.1V/5A+12V rail
Fan Typenone120mm FDB
ProtectionOVP, OCPOVP, OPP, SCP, UVP, OCP, OTP

Dimension comparison

iUniker GaN PD 27W 5.1V 5A 27W PD Power Supply USB-C for Raspberry Pi 5GIGABYTE P550SS Power Supply - PCIe 5.0

Price Comparison

When considering price, the iUniker GaN PD 27W power supply is significantly more affordable at £13.79 compared to the GIGABYTE P550SS power supply, which costs £40.99. This represents a difference of £27.20, making the iUniker a budget-friendly option for users looking for a power source specifically for the Raspberry Pi. The GIGABYTE power supply, while more expensive, aims to cater to a broader audience, particularly those with high-performance systems that require robust power solutions.

Compatibility

The iUniker GaN PD 27W power supply is specifically designed for the Raspberry Pi 5, supporting both the 4GB and 8GB models. In contrast, the GIGABYTE P550SS power supply adheres to the Intel ATX 3.0 standard, making it compatible with a wide range of PC builds. This means that while the iUniker serves a niche market with its targeted compatibility, the GIGABYTE is versatile enough to power various systems, particularly those that demand high wattage.

Technology and Performance

The iUniker power supply utilises GaN technology, which allows it to be smaller and more efficient without compromising performance. It offers multiple output options, including 5.1V/5A and 9V/3A, ensuring stable energy for Raspberry Pi devices. On the other hand, the GIGABYTE P550SS boasts an 80 PLUS Silver certification, indicating superior energy efficiency and performance. It also features a powerful single +12V rail, ideal for high-performance components, which reflects its design for demanding computing environments.

Cooling Solutions

Cooling solutions differ considerably between the two products. The GIGABYTE P550SS is equipped with a 120mm Fluid Dynamic Bearing fan, which is essential for maintaining optimal temperatures during extended use in high-demand scenarios. The iUniker, designed primarily for smaller devices like the Raspberry Pi, does not mention any cooling features, which may be less of a concern due to its lower power output and the operational environment of the Raspberry Pi.

Safety Features

Safety is paramount in power supplies, and both the iUniker and GIGABYTE models come with various protective features. The iUniker power supply includes over voltage, over current, and short circuit protection, which are essential for safeguarding the Raspberry Pi. Meanwhile, the GIGABYTE P550SS offers a more extensive range of protections, including OVP (Over Voltage Protection), OPP (Over Power Protection), SCP (Short Circuit Protection), UVP (Under Voltage Protection), OCP (Over Current Protection), and OTP (Over Temperature Protection). This makes the GIGABYTE a more robust choice for high-performance systems where reliability is crucial.

Design and Aesthetics

In terms of design, the iUniker GaN PD power supply is compact and easily transportable, which is a significant advantage for users who need a portable option for their Raspberry Pi. Its simple design is tailored for specific use cases. Conversely, the GIGABYTE P550SS features a flat cable design, which not only enhances aesthetics but also improves airflow within a PC case, reducing clutter. While both have their merits, the GIGABYTE is geared towards users who value a clean and efficient build.

Target Audience

The target audiences for these two power supplies are quite different. The iUniker GaN PD power supply is aimed at Raspberry Pi users who need a reliable and efficient power source for their micro-computers. With a price point under £14, it is an economical choice for hobbyists and educators. The GIGABYTE P550SS, priced at £40.99, targets gamers and professionals who require a powerful and reliable power supply for high-end components in gaming rigs or workstations, making it a higher investment aimed at performance-oriented users.

Which should you buy?

Ultimately, the choice between the iUniker GaN PD 27W power supply and the GIGABYTE P550SS power supply boils down to your specific needs. If you are a Raspberry Pi user seeking an affordable, compact power supply, the iUniker is the clear winner at £13.79. However, if you require a more powerful solution for a high-performance PC build, the GIGABYTE P550SS, with its extensive protection features and 80 PLUS Silver certification, justifies its higher price of £40.99 for those serious about their computing needs.

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iUniker GaN PD 27W 5.1V 5A 27W PD Power Supply USB-C for Raspberry Pi 5 vs GIGABYTE P550SS Power Supply - PCIe 5.0 | versusfinder