What is using the power in your computer?

By Deane Barker on April 15, 2008

Revisiting “How Much Power Does My Laptop Really Use”?: A good look at just what uses battery life on your laptop (and your desktop too, I suppose). The author hooked up a Kill A Watt meter, and ran various tests.

The top consumers of your laptop’s power are the CPU, the GPU, the DVD, and WiFi — in that order.

I was surprised about the WiFi — I didn’t expect that to use so much power.



  1. Yap.

    If you’re ever running on batteries, and don’t need Wi-Fi… Just disable the device, and you’ll be giving your quickly emptying battery a break.

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