Cougar GX-S 500 Watt Power Supply Review

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Closer look

How many of you have systems that consist of two high-powered graphic cards, over-clocked hex-core CPU, high-dollar water-cooling and a five drive Raid 5 setup? Chances are not many. So, that being said there probably isn’t much of a reason to have a quad digit high-power power supply. In many cases a mid-range wattage unit like a 500-650 watt unit would be enough.

Cougar covers this range pretty well with their GX-S series of power boxes. There is a 400, 500 and the largest, a 600 watt model. Each of which has its place in a build. The 500 and 600 models are the only two with two PCIe connectors making it a good candidate for a more powerful GPU. More on the specifications of the 500w unit as we go on.

The GX-S most impressive feature is the fact that it holds a Gold certification from 80PLUS. This implies the PSU can maintain at least 87% efficiency at 100% load. This isn’t the highest certification but it is quickly becoming the most common as the Platinum rating usually brings a premium price.

The unit has a pretty rugged black coating that should be able to put up with a years of PC abuse. On each of the long sides of the unit is the Cougar wording and logo.

The fan used in the GX-S uses the same Vortex technology found in many of their cooling fans. This means that the fan provides great airflow using special blades while remaining silent in operation.

This model has a total of 68 (34/34) amps and 498 watts across the dual 12v rails.

The only feature we can see making it a make it or break it deal for a consumer is the fact it is not modular. That is right; the unit has all cables permanently attached.

Each of the legs is sleeved in black.

Cable Connections

20/4 Pin ATX

4+4 (8) Pin EPS

4 Pin Molex


6 Pin PCIe

6+2 Pin PCIe



Cougar GX-S 550W