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...

Seagate drive teardown 

Seagate drive teardown

 
The great Seagate hard drive teardown 

The great Seagate hard drive teardown

 
System Builder: Lounge PC – the final bits 

System Builder: Lounge PC – the final bits

 
Microsoft to announce Windows 9 next month 

Microsoft to announce Windows 9 next month

 
Galactic Civilizations III beta now open 

Galactic Civilizations III beta now open

 

Latest Comments

Latest Competitions

Win! Destiny 

Win! Destiny

We're giving away a copy of next great console shooter!
Win! 300 Rise of an Empire 

Win! 300 Rise of an Empire

We're giving away five awesome prize packs!
 

Latest Poll

What PC component are you planning to upgrade in the next six months










Ads by Google

From our Partners

PC & Tech Authority Downloads