Cougar G1050 - GX 1050W Review

Simulated Load Results (Graphs)

Cougar PSU

Simulated Load Results (Graphs)

For those of you not familiar with the layout of our relatively new graphs, the highest and lowest values on the Y-axis (voltage) represent the maximum and minimum voltages allowed by ATX specifications. If the results should fall outside the graph at any time, then that's an instant FAIL. However, merely staying inside these boundaries does not necessarily indicate a good PSU. In order to display truly great voltage regulation, a PSU must stick as closely as possible to the thick white horizontal line (ideal voltage) as possible.

You will also notice that the graph is split into three sections as depicted by the Green, Amber and Red backgrounds. These indicate normal usage (green), heavily uneven load distribution (amber) and overloading of the PSU (red). For the most part all we need to worry about is how it performs in the green section, but good performance in the other sections will undoubtedly earn the PSU extra brownie points.

For a better understanding of now we conduct our PSU testing and how these results were obtained, please be sure to check out the tabulated results over on the next page.


The Cougar GX gets off to a good start with the +3.3v rail which drops only 0.07v from 'idle' to fully loaded. This gives the graph a nice gradual downward slope, rather than a full-on vertical drop that we've seen on some units in the past. The only let down for the PSU is how it responds in the Max Load test. Despite only running at 47w over its rated output, the +3.3v rail plummets to 3.15v showing that it really isn't happy.

A similar trend can also be seen on the +5v rail where the voltages are really quite solid between the normal idle and fully loaded tests, but take a turn for the worst once the PSU is run slightly outside of specs. Obviously this won't be an issue for most of us, as it takes quite a system to draw over 1050w.

And here we have the star of the show, the +12v rail. That rail is so solid that The Rock would be shaking in his boots. Seriously, a drop from 12.06v to 11.94v is nothing at all and additionally both of the cross-load results are quite solid as well. Unfortunately though the Max Load result suffers the same fate as the +3.3v and +5v rails, dropping significantly once the unit is run slightly outside of spec.

Finally it's the tree hugging bit. Cougar have had the GX 1050w certified as an 80Plus Gold unit, which essentially means it must be 88% efficient at 210w / 1050w loads, and 92% efficient at 525w. As we can see, that's absolutely no problem for the GX with just over 92% efficiency at 532w and 88% efficiency or greater in the rest of the standard tests.

If you're interested in how the GX performed under the oscilloscope. Read on....

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Most Recent Comments

08-08-2011, 07:34:23

Overclock3D power supply reviews are back! With fresh chains on the load tester Jim takes a look at the G1050 from Cougar.

Continue Reading

/PS/ Welcome back Jimbo Quote

08-08-2011, 07:43:17

WB Jim! Quote

08-08-2011, 08:55:22

Nice looking psu,but i can get a corsair ax1200 for less money.

Good review though,and paired with Toms video,all corners covered.Quote

08-08-2011, 09:07:23

Great to see you back Mr Jim.

Good to see yet another monster PSU from Cougar too. I still haven't heard any 'whoops it's dead' comments about the CM1000.Quote

08-08-2011, 09:16:13

Great review Jim! and Welcome Back :-) Loving those graphs slightly off topic sorry! Looks like for me orange is the new black, actually no orange & black is the new black on its own lol

Keep it up guys, our tech thirsts need quenching like this :-)Quote

08-08-2011, 09:46:36

"Cougar - Not just your best friends mum" - Priceless!

A bit expensive for my tastes, but a nice looking product nonetheless.

Welcome back Jim Quote

08-08-2011, 09:55:30

Great review guys! Hope to see more PSU reviews coming back on OC3D. Quote

08-08-2011, 10:02:28

nice 1 jim, good to see your written review style back in full effect xD

for those who dont know try searching for cougar on facebook Quote

08-08-2011, 12:58:39

cables look like a certain snake

as said - marmite!!!! .........i don't like this PSU

but good review Jimbo - welcome back dude

NB: how is your little 'un?Quote

08-08-2011, 16:55:09

Jim is the PSU GURU period. It was your reviews that helped me to choose a PSU some time back, nice to see your LMAO reviewing style gracing the pages of OC3D once again.Quote

09-08-2011, 07:06:40

I have this PSU and it retails at less than US $170 here in the Philippines. Clearly at this price, its bang for the buck. Thanks for the review. It made me feel better about my decision to get the cougar GX1050w.


09-08-2011, 07:13:46

Great review love the way you have incorperated all the tech specs and put a video to it, I like the idea of this new theme and hope to see more of the same.

Keep up the great work guys! Quote

10-08-2011, 08:32:31

Nice one Jimbo mate. Great to have your reviews back.

By the way....

I personally like it and would be almosy tempted to build a PC around the design....

And then stop half way through and leave it to catch dust for a couple of years Quote

10-08-2011, 10:21:40

I like the look and the design of the psu, however it seems a tad on the expensive side, probably worth waiting till it cools down a bit, brilliant review as usual.

Also - "Cougar - Not just your best friends mum" - LOLQuote

11-08-2011, 11:23:17

Nice Review Tom!Quote

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