Conclusion
The Dr. Power II PSU tester is a pretty simple and easy to use device. The unit is well made and doesn’t feel cheap in any way. It’s certainly a huge improvement from the original Dr. Power PSU tester. The tester can be found online for around $40-$50, which is a pretty hefty price for a PSU tester, especially considering most others can be found under $30 without much effort.
If you’re looking for a PSU tester and like Thermaltake products, then this would be a great purchase for you. It has a 3 year warranty, but I would think it should last you longer than that, which may make it a worthy investment. ThinkComputers would like to award the Thermaltake Dr. Power II Power Supply Tester a 9 out of 10 score.

Pros:
- Well built
- Easy to use
- Large LCD screen
- Built-in alarm system
Cons:
- Expensive

Is this better? http://www.amazon.com/gp/product/B005F778JO/ref=as_li_ss_tl?ie=UTF8&tag=emjay2d-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=B005F778JO
This baby is perfect for what it’s supposed to do. In fact, it’s the best hand-held PSU tester on the market. I haven’t found a review of this one compared with the other prominent design being sold by about 8 different companies. I’m sure you know which one I’m talking about. Well, I not only have had both of these units, but I also had a unique opportunity a few weeks ago to compare them when checking a particularly nasty PSU. By ‘nasty’ I mean that it was putting out inordinately high voltages. In fact, it literally fried the other unit, including the smoke and stink, but this one took it like a champ and only displayed a red error screen and indicated the voltages were too high. It nearly brought tears to my eyes to go through a second of that other type of meter, and I would have assumed that it was maybe defective or, even if this PSU was particularly ‘bad’, that these hand-held units all die when they hit a PSU with this kind of flaw. I’m happy to say that I no longer have to wonder every time I plug a PSU into my tester whether it is going to be the last one the unit tests before it fries. I can’t believe they still sell the other units, but I’m sure that reviews like mine that point out its significant defect are few in deed. This must be your lucky day to come across mine.