Cougar A450 Power supply

Published: December 27, 2010
Author: Ville Ilonen
Editor: Amber Lupala
Provider: Cougar

Closer look & conclusion

Cougar A450 Cougar A450
Please click thumbnails for bigger pictures

The backside of the PSU does not reveal to us anything out of the ordinary. Both the Power switch and power cord plug are where they should be and the backside is made from the mesh. The power supply has 120mm fan to cool it down and in my tests, it was one of the most silent ones I’ve encountered!

Cougar A450
Please click thumbnails for bigger pictures

On the longside of the PSU there’s an usual sticker printed with the specifications of the unit alongside with some certificates and serial number.


Following setup was used during the tests:
AMD Phenom II X2 555BE @ X4 3.8GHz
4x2GB G.SKILL Ripjaws DDR3-1600MHz
Asus M4A785TD-M EVO Motherboard
Club3d Radeon 4890
Hitachi HDT721010SLA360 1TB HDD

Stress tests were performed using OCCT power supply test.

Tis Power supply is put under heavy stress in the OCCT power supply test. In the graph above we notice the 12V line to vary from 12.7V all the way down to 12.3V values. A 0.4V drop isn’t that bad considering the power supply manages to be over 12V all the time. In the graph, the stress was most intense during the time period from 1.5 minutes to 6 minutes. In that period of time we can see the 12V line being a little lower in average than in the idleperiods. This is common for every power supply on the market.

Like in the 12V line test, we see the similar voltage drop also in the 3.3V line. Unfortunately we go below the 3.3V mark in the most intense sections of the test. 3.18V is the lowest we can see there. Overall, however, is well between the ATX margins tho.


Overall this seems quite decent power supply. Being absolutely one of the most silent ones I’ve encountered and having enough juice for the normal home computers, I see lots of potential in it. I’ve had couple cougar power supplys personally in the past, and I expect nothing less than perfection from this one either. Something I would have liked to see in this particular unit, was modular cables. These help you to manage your cables easily and do not tend to raise the pricetag nowdays. However, I can sincerely recommend Cougar A-series power supplies to anyone who is in need of one and those who are building your new machines to consider it as one potential power supply option.

+ Silent
+ Good 12V line
+ Enough connectors

- In stress 3.3V line can go below 3.3V
- No modular cables

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