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'Inexact' Chips Save Power By Fudging the Math

Barence writes "Computer scientists have unveiled a computer chip that turns traditional thinking about mathematical accuracy on its head by fudging calculations. The concept works by allowing processing components — such as hardware for adding and multiplying numbers — to make a few mistakes, which means they are not working as hard, and so use less power and get through tasks more quickly. The Rice University researchers say prototypes are 15 times more efficient and could be used in some applications without having a negative effect."

9 of 325 comments (clear)

  1. Prediction by Anonymous Coward · · Score: 5, Funny

    37 posts about the Pentium division bug.

    1. Re:Prediction by Anonymous Coward · · Score: 5, Funny

      You just deprived someone of their +5 Funny, you bastard.

    2. Re:Prediction by Anonymous Coward · · Score: 5, Funny

      36.9999995796 posts about the Pentium division bug.

      Fixed that for you.

    3. Re:Prediction by Chrisq · · Score: 5, Funny

      You just deprived someone of their +5 Funny, you bastard.

      My computer makes it a +4.7 funny.

  2. Target Market by SJHillman · · Score: 5, Funny

    These chips will, of course, be aimed at government markets.

  3. First Post! by MyLongNickName · · Score: 5, Funny

    This is first post according to my new power-efficient computer!

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  4. Re:Turtles all the way down by L4t3r4lu5 · · Score: 5, Insightful

    Oh you misunderstand. It will still return the "right" answer, it'll just be "engineer" right, not "mathematician" right, i.e. "Good enough for all intents and purposes.

    Furthermore, posting under the top post when your reply is nothing to do with the OP is considered a faux pas. Minus 50 DKP.

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  5. Re:AI Chip by trum4n · · Score: 5, Insightful

    Humans tend to do fast imprecise math to decided when to cross the street. It looks like that car won't hit me, but i can't say its going to take 4.865 seconds for it to get to the crosswalk. Estimations, even if fudged and almost completely wrong, should play a massive role in AI.

  6. Re:AI Chip by bmo · · Score: 5, Insightful

    Which is... math.

    Just because something doesn't involve digits doesn't mean it's not math. I suggest you look up analogue computers, because that's what you just described - a neural net acting as an analogue computer.

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    BMO