Optimal Shop LCD ATX Power Supply Alternatives: 6 Similar Picks Compared

How each alternative compares

Optimal Shop 20+4 Pin LCD Power Supply Tester

This Optimal Shop model shares the 8-in-1 connector support and LCD display of the original but adds precise physical dimensions. It measures 3.7 by 0.8 by 8.3 inches and weighs 3.2 ounces, offering a standardized profile for technicians who need exact fitment details. The black finish differs from the original’s gold shell, which may suit darker workbenches better. Like the base model, it includes a buzzer alarm for PG signal failures and supports ATX and ITX connectors. You gain specific size data while retaining the same reliable voltage verification capabilities for standard PC power supplies.

Comidox 20/24 Pin LCD Power Supply Tester

The Comidox tester offers a slightly larger footprint at 4.95 by 2.51 inches, providing more surface area for the LCD screen compared to the original’s compact design. It maintains the core function of displaying +12V, +5V, and +3.3V outputs with audible alerts for voltage faults. This unit supports ATX, BTX, ITX, and TFX form factors, covering a broader range of desktop power supplies than the original. The black casing is durable and lightweight. If you frequently test older BTX or TFX units alongside standard ATX supplies, this broader compatibility makes it a practical choice for versatile diagnostics without sacrificing clear visual feedback.

ASHATA ATX LCD Power Supply Tester

ASHATA provides a more compact unit measuring 3.94 by 1.97 inches, significantly smaller than the original’s 8.3-inch length. This portability suits technicians with limited workspace or those carrying tools in small kits. It retains the LCD display for precise voltage readings and includes audible alarms for safety checks. The device supports multiple interfaces for routine maintenance, similar to the original’s multi-connector approach. While it lacks the specific aluminum alloy shell description found in the Optimal Shop model, its lightweight build at 2.82 ounces ensures easy handling. You get a space-saving design with the same essential voltage verification features for standard ATX power supplies.

ASHATA LCD Power Supply Tester

This ASHATA tester matches the compact dimensions of the previous entry, measuring 3.94 by 1.97 inches and weighing 2.82 ounces. It focuses on checking ATX, ITX, and BTX units with precise voltage readings on the LCD. A key distinction is its limitation: it is not suitable for testing external peripheral cables, unlike the original which supports HDD and SATA connectors. This makes it ideal for verifying main power connector stability in ATX, ITX, or BTX systems. If you primarily need to confirm voltage stability on main board connectors rather than peripheral power delivery, this focused design offers a streamlined, portable solution for routine diagnostics.

JacobsParts 20/24-Pin LCD Power Supply Tester

JacobsParts offers a straightforward tester weighing 3.53 ounces with a black finish. It supports ATX, ITX, and BTX form factors, providing essential voltage checks for standard desktop power supplies. Like the original, it uses an LCD screen to display output voltages, ensuring clear visual verification. The design is battery-free, relying on the power supply’s own output to function, which simplifies use. It covers the core connectors needed for basic diagnostics. If you prefer a simple, no-frills tool that verifies basic power output before installation without complex features, this unit delivers reliable performance for standard ATX and ITX power supply testing with a focus on essential functionality.

Yankok Digital PSU Tester with Backlit LCD

The Yankok tester features a model number YKNT-PST-ATX04 and emphasizes self-powered operation, meaning it does not require external batteries to function. It provides clear LCD feedback for verifying +12V, +5V, and +3.3V outputs on ATX, ITX, and BTX units. This self-sufficient design simplifies the testing process for technicians who want to avoid managing separate power sources for the tool itself. It covers standard PC voltages effectively, similar to the original’s core capabilities. If you value a tool that draws power directly from the unit under test for immediate, reliable voltage checks without additional setup, this option offers a practical and efficient diagnostic solution.

Quick picks

Our 7 picks

1 Best overall

Optimal Shop LCD ATX Power Supply Tester

Best for: Standard ATX PSU voltage verification

Form Factor

ATX

Display Type

LCD Display

View on Amazon: Optimal Shop LCD ATX Power Supply Tester Affiliate link

This Optimal Shop unit tests 20+4 pin ATX connectors and SATA, IDE, floppy, and PCIe cables. A 1.8-inch LCD displays voltage readings, powered directly by the 20-pin or 24-pin connector. An aluminum alloy shell provides durability and heat resistance. A buzzer alerts you if the power good signal fails. It is a compact tool for verifying PSU outputs.

Pros

• Supports 8 connector types including 20/24-pin ATX, SATA, IDE, and PCIe
• 1.8-inch LCD screen displays output voltage clearly
• Aluminum alloy shell offers high strength and corrosion resistance
• Built-in buzzer alarms when the power good signal fails

Cons

• Screen is prone to scratching and requires a protective film
• Only tests specific voltage rails for non-ATX connectors
• Golden finish may not suit all workbench aesthetics

Good fit if

• You need to verify 20+4 pin ATX output voltages
• You want a portable tester with an LCD display
• You test multiple connector types like SATA and PCIe

Skip if

• You require a tester for EPS 8-pin connectors
• You prefer a large high-resolution display
• You need to test DC fan speeds

Verdict: Optimal Shop 20+4 Pin LCD ATX Tester covers essential ATX and peripheral connectors with a clear LCD. It suits technicians who need reliable voltage checks for standard PC power supplies.

2 Also great

Optimal Shop 20+4 Pin LCD Power Supply Tester

Best for: Technicians testing standard ATX/ITX connectors

Form Factor

ATX

Display Type

LCD Display

Dimensions

8.3 × 3.7 × 0.8 inches

Weight

3.2 ounces

View on Amazon: Optimal Shop 20+4 Pin LCD Power Supply Tester Affiliate link

This Optimal Shop tester checks 20+4 pin ATX, ITX, and BYI connectors. It features a 1.8-inch LCD screen for voltage readouts and a buzzer alarm for PG signal failures. The aluminum alloy shell keeps it light at 3.2 ounces. It supports SATA, IDE, and PCI-e testing. You get clear indicators for +12V, +5V, and +3.3V outputs. This tool suits technicians needing portable, reliable hardware diagnostics.

Pros

• Tests 8 connector types including 20-pin, 24-pin, SATA, and PCI-e
• 1.8-inch LCD screen displays output voltage clearly
• Built-in buzzer alarm signals PG number failures
• Aluminum alloy shell provides corrosion resistance and heat dissipation
• Compact dimensions of 8.3 x 3.7 x 0.8 inches

Cons

• Small 1.8-inch screen may be hard to read for some users
• Screen is prone to scratching without protective film removal
• Buzzer alarm may be too loud in quiet environments

Good fit if

• You need to test multiple connector types like SATA and PCI-e
• You prefer a lightweight aluminum build for portability
• You want visual voltage indicators alongside audio alarms

Skip if

• You require a large display for easy reading
• You need testing for non-standard or proprietary connectors
• You prefer silent operation during diagnostics

Verdict: Optimal Shop 8-in-1 LCD ATX Tester offers comprehensive connector support in a portable aluminum package. It fits technicians who need reliable voltage checks and failure alarms for standard ATX and ITX systems.

3 Best budget

Comidox 20/24 Pin LCD Power Supply Tester

Best for: Quick visual and audible ATX power supply checks

Form Factor

ATX

Device Compatibility

PCs

Display Type

LCD Display

View on Amazon: Comidox 20/24 Pin LCD Power Supply Tester Affiliate link

This Comidox tester checks ATX, BTX, ITX, and TFX power supplies. You connect it to the 20-pin or 24-pin connector. The LCD shows voltage and PG values. It measures +3.3V, +5V, +12V, -12V, and SB+5V. A buzzer warns you if values are abnormal. The unit is small and black. It fits users who need quick, visual checks for desktop builds.

Pros

• LCD displays voltage and PG values
• Measures +3.3V, +5V, +12V, -12V, and SB+5V
• Automatic buzzer alarm for faults
• Supports ATX, BTX, ITX, and TFX formats

Cons

• Only displays LCD voltage for 20-pin or 24-pin connectors
• Does not show LCD voltage for external P4/P6/P8/SATA/IDE wires
• No remote or app control listed

Good fit if

• You want to verify ATX power supply voltages quickly
• You need a buzzer alert for abnormal readings
• You work with standard 20-pin or 24-pin connectors

Skip if

• You require voltage readings for SATA or IDE cables on the LCD
• You need a tester for non-ATX server power supplies
• You prefer a digital multimeter over a dedicated tester

Verdict: Comidox 20/24 Pin LCD ATX PSU Tester offers clear voltage readings and audible alerts for standard desktop power supplies. It suits technicians who need fast, visual verification of ATX, BTX, ITX, and TFX units.

4 Also great

ASHATA ATX LCD Power Supply Tester

Best for: precise voltage checks with audible alarms

Form Factor

ATX

Device Compatibility

PCs

Display Type

LCD Display

Dimensions

3.94 × 1.97 × 0.79 inches

Weight

2.82 ounces

View on Amazon: ASHATA ATX LCD Power Supply Tester Affiliate link

The ASHATA tester checks ATX, ITX, and BTX power supplies using 20/24-pin, SATA, and PCIe connectors. Its LCD shows real-time voltages for +12V, +5V, and +3.3V with 0.01V precision. An alarm sounds if values fall outside safe ranges. This lightweight unit helps you verify stability before installing components. It suits users who need clear visual feedback and audible warnings for quick diagnostics.

Pros

• LCD displays real-time voltage for +12V, -12V, +5V, -5V, +3.3V, SB, and PG signals.
• Measures voltage with 0.01V precision for accurate stability checks.
• Triggers buzzer alarm and flashes screen when parameters are out of range.
• Supports 20/24-pin ATX, SATA, 4/8-pin, and 6-pin PCIe interfaces.

Cons

• Does not mention a carrying case for storage.
• Lacks a built-in battery, requiring external power.
• No mention of a protective display cover.

Good fit if

• You want audible alarms for immediate fault detection.
• You need to test multiple connector types like SATA and PCIe.
• You prefer visual voltage readings with high precision.

Skip if

• You require a wireless or Bluetooth connection.
• You need a tester with a built-in rechargeable battery.
• You are looking for a device with a protective case included.

Verdict: ASHATA ATX PSU Tester with LCD provides precise voltage readings and audible alarms for safe diagnostics. It fits users who value clear LCD feedback and multi-interface support for routine maintenance.

5 Also great

ASHATA LCD Power Supply Tester

Best for: Checking ATX, ITX, and BTX voltage stability

Form Factor

ATX

Device Compatibility

PCs

Display Type

LCD Display

Dimensions

3.94 × 1.97 × 0.79 inches

Weight

2.82 ounces

View on Amazon: ASHATA LCD Power Supply Tester Affiliate link

This ASHATA tester checks ATX, ITX, and BTX power supplies via a 20+4 pin connector. It features an LCD screen that displays voltage with 0.01V accuracy. A buzzer sounds when readings are within the normal range. The unit is compact, measuring 3.94 by 1.97 by 0.79 inches. It weighs 2.82 ounces. This tool helps you verify output stability without complex equipment.

Pros

• LCD display shows voltage with 0.01V precision
• Automatic buzzer alarm for normal range readings
• Compatible with ATX, ITX, and BTX connectors
• Compact size of 3.94 by 1.97 by 0.79 inches

Cons

• Voltage display only works when connected to the 20-pin or 24-pin ATX connector
• External P4, P6, P8, and SATA connectors only show light indicators, not voltage values
• Single voltage probe limits simultaneous multi-rail testing

Good fit if

• You need to verify ATX power supply voltage stability
• You want an automatic alarm for normal readings
• You prefer a compact tool for bench testing

Skip if

• You require voltage readings for SATA or P8 connectors
• You need to test multiple rails simultaneously
• You prefer a large display for easy reading

Verdict: ASHATA ATX Power Supply Tester with LCD provides precise voltage readings for main connectors. It fits users who need to check ATX, ITX, or BTX units quickly. It is not suitable for testing external peripheral cables.

6

JacobsParts 20/24-Pin LCD Power Supply Tester

Best for: Basic ATX, ITX, BTX voltage verification

Form Factor

ATX

Display Type

LCD Display

Weight

3.53 ounces

View on Amazon: JacobsParts 20/24-Pin LCD Power Supply Tester Affiliate link

This JacobsParts tester checks ATX, ITX, and BTX power supplies. It displays +3.3V, +5V, +VSB, and +12V readings on an LCD screen. The unit requires no batteries. It measures 4.75 by 2.5 inches and weighs 3.53 ounces. You get a clear view of voltage status without connecting to a full PC build. It suits users who need a simple way to verify PSU health.

Pros

• Tests +3.3V, +5V, +VSB, and +12V lines
• Compatible with ATX, ITX, and BTX forms
• No batteries required for operation
• Compact 4.75 by 2.5 inch size

Cons

• Only tests 20/24 pin ATX connectors
• Does not support PCIe or SATA power rails
• Limited to basic voltage checks without load testing

Good fit if

• You need to quickly verify ATX power supply voltages
• You work with ITX or BTX systems
• You want a battery-free testing tool

Skip if

• You require PCIe or SATA rail testing
• You need load testing capabilities
• You are using non-standard power connectors

Verdict: JacobsParts 20+4 Pin LCD PSU Tester provides essential voltage checks for standard ATX, ITX, and BTX supplies. It fits technicians who need a straightforward, battery-free way to verify basic power output before installation.

7 Best premium

Yankok Digital PSU Tester with Backlit LCD

Best for: Verifying standard ATX, ITX, and BTX voltages

Form Factor

ATX

Display Type

LCD Display

View on Amazon: Yankok Digital PSU Tester with Backlit LCD Affiliate link

This Yankok tester checks ATX, ITX, and BTX power supplies. It displays +5 VSB, +12V, +3.3V, and +5V on a backlit LCD screen. The device powers itself from the PSU connector, so you do not need batteries. It includes audible alarms for voltage failures. It supports SATA, IDE, and PCI-Express connectors. This tool is designed for quick functional checks of vital voltages.

Pros

• Backlit LCD display shows output voltages
• Self-powered via 20-pin or 24-pin connector
• Audible alarm for voltage failures
• Compatible with ATX, ITX, and BTX standards

Cons

• Limited to four specific voltage rails
• No mention of USB-C or advanced digital interface
• Plastic ports may feel less durable than metal alternatives

Good fit if

• You need to verify standard ATX voltages quickly
• You work with ITX or BTX motherboards
• You want a display that powers itself from the unit

Skip if

• You require testing of +1.5V or +3.3VSB rails
• You need a metal housing for heavy workshop use
• You want to test non-ATX server power supplies

Verdict: Yankok ATX ITX BTX PSU Tester with LCD provides a clear, self-powered check for standard PC voltages. It fits technicians who need to verify +12V, +5V, and +3.3V outputs on ATX, ITX, or BTX units without external power.

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