Power Supplies

Power Supplies

If you value the stability of your system and want to minimise your electricity costs, invest in a high-quality power supply.

If you value the stability of your system and want to minimise your electricity costs, invest in a high-quality power supply

It’s easy to imagine that all power supplies are the same, and when you can buy a ‘no-name’ unit for twenty bucks you might wonder why you’d pay anything more. But dirt-cheap models can’t always provide the advertised wattage, leading to intermittent crashes or even a complete burn-out at higher loads.

They can be woefully inefficient, too, wasting as much as a third of the power they draw. If you value the stability of your system – and want to keep electricity bills to a minimum – it makes sense to invest in a high-quality supply and let the savings on your electricity bill offset the extra cost.

This month, we’ve taken eight big-brand power supplies and subjected them to extensive electrical testing at 25%, 50%, 75% and 100% of their claimed capacity. The good news is that all of them proved comfortably able to deliver the promised power levels, and all ran stably, with no rail deviating more than 3% from its proper voltage (the ATX standard allows for 5% deviation on the main rails).

We also tested for power efficiency and all achieved better than 80% – see the chart opposite for each supply’s average efficiency across our tests. But that isn’t to say they’re interchangeable: each has its own strengths, and there’s a huge range of capacities on offer.

Browse this article: 

This Group Test appeared in the June, 2008 issue of PC & Tech Authority Magazine

See more about:  power  |  supplies  |  components  |  fsp  |  akasa  |  enermax  |  gigabyte  |  corsair
 
 

Readers of this article also read...

Australian Productivity Commission says rights holders have too much power over our media 

Australian Productivity Commission says rights holders have too much power over our media

 
Ten things Apple was right to kill off 

Ten things Apple was right to kill off

 
14 Windows 10 problems - and how to fix them forever! 

14 Windows 10 problems - and how to fix them forever!

 
Steam OS outperformed by Windows 10 

Steam OS outperformed by Windows 10

 
Apple's biggest announcement (literally): the iPad Pro 

Apple's biggest announcement (literally): the iPad Pro

 

Latest Comments

From our Partners

PC & Tech Authority Downloads