Justin du Coeur (jducoeur) wrote,
Justin du Coeur


Fascinating. For many years I've been aware of the overclocking concept: boosting your computer's speed, to jazz it up for gaming. But this is the first time I've come across the inverse concept of "undervolting" -- carefully reducing your laptop's power draw to pull the minimum current that will still run stably, thereby reducing its temperature and improving battery life. There's a nice tutorial here on how to bring down the machine's current step by step until you find the minimum.

(The obvious question is, "So why don't they just ship the computer this way?". The claimed answer is basically that the manufacturers choose a single voltage that is relatively middle-of-the-road, safe for all samples of the chip. Tuning to get the optimal voltage for each specific chip takes a fair amount of extra effort, so they don't bother.)

Neat stuff. Given that I run a machine with a relatively wimpy battery (I went for weight over battery life), there's something to be said for trying this. Not to mention the general ecological benefit of not consuming unnecessary power...
Tags: technology

  • Ideas for fighting Fake News

    [I'm mostly just posting links over in Facebook, but my more technical friends tend to be over here.] Here is a really excellent collection of…

  • Damn

    *Sigh*. I was sure this was possible, and was thinking for the past two weeks that it was starting to feel likely, but was really hoping otherwise. I…

  • Time to change the name of the meme?

    From cnn.com today: 'Trump went on to again attack women who have accused him of sexual assault or misconduct, saying, "every woman lied when they…

  • Post a new comment


    Anonymous comments are disabled in this journal

    default userpic

    Your reply will be screened

    Your IP address will be recorded 

  • 1 comment