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Kingwin Mach 1 ABT-800MA1S 800W Modular PSU E-mail
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Written by Olin Coles   
Thursday, 24 January 2008
Table of Contents: Page Index
Kingwin Mach 1 ABT-800MA1S 800W Modular PSU
Features and Specifications
Kingwin Mach 1 Exterior
Kingwin ABT-800MA1S Details
ABT-800MA1S Cables and Wiring
Testing Voltage Ripple and Regulation
ABT-800MA1S Test Results
Final Thoughts and Conclusion

Mach 1 Final Thoughts

The ATX12V Design Guide v2.2 states in section 1.2.2 that power supplies must measure a minimum 70% efficiency under typical load, with 80% efficiency as the recommended guidance. Kingwin may be compliant with this guideline, but there is clearly a difference between following the rule and defining it. What is most unfortunate is how there are some products we review that far exceed even 80 PLUS standards, and then there are others that wouldn't qualify.

In a small way it is unfortunate then that so many review sites tout the "certification", because most of these sites don't take into consideration how misleading their articles can be. Of the many different power supply companies I test, it is usually the more commercial names that use the 80-PLUS logo as a marketing tool. In all actuality, power supplies can cheat the efficiency rating system by several different tactics: use high amperage 3V and 5V rails, which then compensates for 12V inefficiency. Now if someone dropped the nearly worthless 3V rail and could still remain 80% efficient, that would be impressive.

Kingwin Mach 1 ABT-800MA1S 800W Modular PSU

When Intel Corporation drafted the ATX12V Power Supply Design Guide v2.2 back in March of 2005, they probably didn't expect fuel and utility prices to grow over 300%. Take into account the growing power consumption needs of modern consumer electronics and personal computers, and the need for highly-efficient components becomes critical. This is why 80 PLUS seems to be the buzz word of choice for most power supply manufacturers. Unfortunately, most consumers buy into the hype, and don't realize that the 80-PLUS certification is little more than a paid stamp of approval. If enthusiast are to take the 80-PLUS certification seriously, they will need to publish independent test results; something that is impossible to provide since the organization does not conduct any product testing.

Kingwin ABT-800MA1S Conclusion

Kingwin offers an appealing package, and presentation is well laid out. As far as power supply packaging, the Mach 1 is par for the course. It's once you open the retail package that you begin to see some new looks and a few features that seem otherwise unique to the industry.

The finish on the Mach 1 is nothing too glitzy, but the gunmetal finish which Kingwin describes as nickel plated is more than enough to satisfy even the most discerning consumer. When you factor in the blue LED 140mm cooling fan and back-lit connection receptacles, the ABT-800MA1S is quite the looker.

Power supply units are one of the few computer components which historically have been built solid. Kingwin has decided to make their first power supply product a modular version, but nevertheless it has kept with tradition and offers a rugged product. Although the cables are susceptible to damage or breakdown, as with any wire or cable, the Mach 1 is otherwise heavy-duty.

The Kingwin ABT-800MA1S 800W Modular PSU recorded poor AC ripple under heavy load, however the DC regulation remained impressive. The lack of active Power Factor Correction has certainly played a role in the Mach 1, which has proved itself to be capable but more fashion than function in the long run. The most important item on my list of recommended improvements would be to add active PFC, but I would also like to see some refinement in the performance category as the AC ripple and DC voltage regulation are not what I consider to be a fine example of power supply technology for a 2008-era product.

At the time of this writing, the lowest price available online was $147.99. Based on this price, the value falls directly within the average of all 800W power supply units presently sold. Considering the rugged connectors and convenient modular cables, this is more product than you will find at comparable prices.

Kingwin offers an attractive power supply unit for gamers and anyone else wanting to show off their hardware, and the Mach 1 certainly holds its own in regards to functionality. However in this day and age you have to make a product that shines on the inside just as much as the outside, and the ABT-800MA1S just doesn't do it. Rated for 800W maximum peak output, this modular power supply will handle most anything you put to task, but don't expect refinements such as high efficiency or active power correction on this unit. In conclusion, I can recommend the Mach 1 to gamers and hardware enthusiasts for the attractive looks and convenience features, but those who scrutinize the performance such as overclockers may need to look for something that offers more functionality than fashion.


+ Four 12V+ power rails
+ Variable length cable groups
+ Convenient EZ-Grip connectors
+ Attractive backlit receptacles
+ High-quality construction
+ Great component cooling
+ Attractive metal finish
+ NVIDIA SLI-ready certified PSU


- Poor (but within ATX spec) AC ripple under load
- No active Power Factor Correction


• Presentation: 9.00
• Appearance: 9.25
• Construction: 8.75
• Functionality: 8.00
• Value: 7.25

Final Score: 8.45 out of 10.

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