PassMark Inline PSU Tester Review - A Great Tool For Checking Your Power Supply?

Briefly, with this small gizmo, you can do the following: check the voltage levels on all rails, record the minimum and maximum of voltage and current for each rail, measure the power in each rail and the total power output of the PSU, check ripple on the main voltage rails, measure the PSU's timings along with the slew rate on the main rails during power-up, and finally check the turn-on slope of the main voltage rails and the DC power sequencing. The good thing is that you can connect this PSU tester to a PC and use the provided software to make things easier.

The PassMark PSU tester supports five operating modes:
Inline mode
Inline mode & Monitoring
Standalone mode
Standalone mode & Monitoring
Multiple testers combined

I liked this PSU Tester (PM123), despite its restrictions and shortcomings, and this means that it earned a place in my lab. With some upgrades, it can become an excellent tool for everyone interested in exploring the magical PSU world. It costs about the same with a higher-end graphics card, but it won't lose its value in the long run, while it will help you to quickly evaluate the operating condition of any power supply that will fall in your hands. This is not a tool for the average Joe, but users wanting to learn more about PSUs, and technicians, of course, will highly appreciate its features and capabilities. Kudos to PassMark for their good work, and I hope that its engineers will hear my suggestions, and they will come back with something even better in the near future.


Pros
Decent price given its features
Can perform all essential tests
Easy to use
Accurate power output readings
Accurate +12 V, 5 V, and 5VSB voltage readings
Accurate enough timing readings
Accurate enough Slew Rate readings
Upgradable firmware
Can handle strong PSUs
The embedded screen helps it operate without being connected to a PC
Several operating modes
Not complex software providing all essential data
You can combine more than one testers

Cons
No mention about calibration
Not adequate cooling. In standalone mode, it shuts down within a minute
The ATX connector needs more space around it
Not accurate ripple measurements
The Amperage readings could be more accurate
Only one (6-pin) PCIe connector

Video Chapters
00:13 What is this about?
01:03 Who it refers to?
01:14 Price?
01:25 Specifications
02:03 Unboxing
03:36 Supported Measurements
04:14 Internal Design
05:02 Operating Modes
06:36 Usage Example (Standalone mode)
10:20 Comparison Set-up
10:30 Comparison results (software side by side)
11:15 Comparison results (tables)
12:49 Bottomline
14:48 Pros
15:39 Cons

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