Fuhengli Computer PC Power Supply Tester, vs R∞RasTech RasTech for Raspberry Pi 5 GaN PD 27W Power Supply
Updated August 2026 — Fuhengli Computer PC Power Supply Tester, wins on features and ease of use, R∞RasTech RasTech for Raspberry Pi 5 GaN PD 27W Power Supply wins on compatibility and price.
The Computer PC Power Supply Tester is ideal for versatility and testing multiple power supplies, while the RasTech power supply excels in reliability for Raspberry Pi 5 users.
Why Fuhengli Computer PC Power Supply Tester, is better
Versatility
Can test multiple connector types
Build Quality
Aluminum alloy enclosure for durability
Functionality
Includes LCD screen and beep alarm
Why R∞RasTech RasTech for Raspberry Pi 5 GaN PD 27W Power Supply is better
Price
Lower price at $12.99
Protection Features
Comprehensive 6-layer protection system
Simplicity
Easy to use with Raspberry Pi 5
Overall score
Specifications
| Spec | Fuhengli Computer PC Power Supply Tester, | R∞RasTech RasTech for Raspberry Pi 5 GaN PD 27W Power Supply |
|---|---|---|
| Connector Types | Multiple | USB-C |
| Protection | Buzzer Alarm | 6-layer |
| Display | LCD | None |
| Compatibility | Broad | Raspberry Pi 5 |
| Power Output | Varied | 5.1V/5A |
Dimension comparison
Overview of the Products
In this comparison, we will examine the Computer PC Power Supply Tester and the RasTech for Raspberry Pi 5 GaN PD 27W Power Supply. The Computer PC Power Supply Tester is priced at $15.99, while the RasTech power supply is available for $12.99, making it about 17% cheaper. Each product serves different purposes, appealing to distinct user needs in the realm of power supplies.
Design and Build Quality
The Computer PC Power Supply Tester features an aluminum alloy enclosure, which offers lightness, easy portability, and high strength. This robust design also ensures nice thermal conductivity and corrosion resistance. On the other hand, the RasTech power supply is designed for the Raspberry Pi 5 and incorporates a standard black GaN design with a 1.3M length cable. While the RasTech power supply is compact, it does not have the same rugged build quality as the aluminum alloy tester. Users seeking durability may prefer the Computer PC Power Supply Tester for its sturdier construction.
Functionality
The Computer PC Power Supply Tester is an 8-in-1 device capable of testing various connector types, including ATX, IDE, and SATA. It features a 1.8-inch LCD screen that displays output voltages, making it easy to read and interpret results. Additionally, it has a beep alarm to indicate when tested values are outside the normal range. Conversely, the RasTech power supply is specifically designed for the Raspberry Pi 5, providing 5.1V/5A power that supports a wider range of peripherals. While both products excel in their intended functionalities, the tester offers broader compatibility with multiple power supply types compared to the dedicated nature of the RasTech power supply.
Performance
When it comes to performance, the Computer PC Power Supply Tester provides essential voltage readings for multiple connectors, which is critical for diagnosing power supply issues. The beep alarm feature adds an extra layer of functionality, alerting users to any irregularities. On the other hand, the RasTech power supply delivers a consistent output of 5.1V/5A, ensuring the Raspberry Pi 5 operates smoothly even under full load. The GaN technology used in the RasTech power supply enhances efficiency, allowing it to maintain performance without falling into low voltage issues. Users focusing on testing power supplies might find the tester more useful, while those using Raspberry Pi 5 will benefit from the reliable output of the RasTech power supply.
Compatibility
The Computer PC Power Supply Tester is versatile, compatible with a range of connectors, including 20-pin ATX, 24-pin ATX, and SATA connectors. This adaptability makes it an excellent tool for technicians and hobbyists who work with various power supplies. The RasTech power supply, however, is tailored specifically for the Raspberry Pi 5, supporting models with 2GB, 4GB, 8GB, and 16GB of RAM. For users who primarily work with Raspberry Pi products, the RasTech power supply's compatibility is a significant advantage, while the tester's broad compatibility is beneficial for general power supply testing.
Protection Features
Protection features are vital for ensuring the safety and longevity of devices. The Computer PC Power Supply Tester includes a buzzer alarm for out-of-range values, which can help prevent damage to connected components. However, the RasTech power supply comes equipped with a comprehensive 6-layer protection system, including over-current, short-circuit, and over-voltage protection. This robust safety framework ensures that the Raspberry Pi and connected peripherals are safeguarded against power anomalies. Users concerned about device safety may prefer the RasTech power supply for its extensive protection features.
Price Comparison
The Computer PC Power Supply Tester is priced at $15.99, while the RasTech power supply is offered at $12.99. This price difference of $3 equates to about 17%, making the RasTech more accessible for users on a budget. This difference in pricing could influence purchasing decisions, especially for those who are specifically looking for a power supply for their Raspberry Pi. Budget-conscious consumers may find more value in the RasTech power supply, while those needing a testing device may see the price of the tester as justified.
User Experience
User experience varies significantly between the two products. The Computer PC Power Supply Tester provides immediate feedback through its LCD screen and audio alerts, allowing users to quickly identify power issues. However, it may require some technical knowledge to interpret the readings effectively. In contrast, the RasTech power supply is designed for simplicity, ensuring that users can seamlessly connect their Raspberry Pi 5 and enjoy reliable power without additional setup. For those unfamiliar with power testing, the straightforward functionality of the RasTech can be more appealing.
Which should you buy?
Choosing between the Computer PC Power Supply Tester and the RasTech for Raspberry Pi 5 power supply depends on your specific needs. If you require a versatile tool for diagnosing various power supplies, the Computer PC Power Supply Tester is the better option, offering a broader range of compatibility and features. However, if your primary goal is to power a Raspberry Pi 5 reliably, the RasTech power supply stands out with its efficiency, lower price, and superior protection features. Ultimately, your choice should align with whether you need a comprehensive testing device or a dedicated power supply solution.

