Ubuntu Heat vs Vista Heat


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Has anyone else noticed that there system runs hotter when running Ubuntu with Compiz? I'm wondering why that is? could it be maybe cause of Vista's superfetch?

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Nothing to do with superfetch, just a less optimied graphics engine with taxes your cpu and battery a lot more.

Compiz does neat stuff, but it's still coded by enthusiasts and hobbyists, not proffessionals who get paid to sit and do it all day long.

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Superfetch is a cache-like feature for faster performance by pre-loading common applications, I doubt it has much of an effect on ambient temps.

I do not think Ubuntu has a power-saving feature where the frequency of CPU usage is lowered over a certain amount of time. Vista surely has it. (Screensaver config)

EDIT: If the frequency is always at 100%, the speed is kept the same and thus more heat.

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Has anyone else noticed that there system runs hotter when running Ubuntu with Compiz? I'm wondering why that is? could it be maybe cause of Vista's superfetch?

yes i noticed my temps spiked with linux at times. ive had no issues so far in windows 7 though !

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I definitely notice a difference in temperatures between XP/Vista/7 vs Linux. Windows always runs cooler on my laptop. Linux even with CPU scaling runs terribly hot.

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I do not think Ubuntu has a power-saving feature where the frequency of CPU usage is lowered over a certain amount of time. Vista surely has it. (Screensaver config)

I don't know how Ubuntu is set up in that aspect but linux per se has supported dynamic frequency scaling (both in kernel and through daemons) for a long time already.

Maybe Ubuntu is, for some reason, not taking proper advantage of that.

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*buntu works fine for CPU frequency scaling.

post-36818-1232678166.png

That is half-scaled from the 2400MHz normal full speed. And you can see temps are cool.

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*buntu works fine for CPU frequency scaling.

Maybe it depends on the cpu brand/model, and what frequency scaling governor is being used :huh:

Anyway, my laptop at work runs cool too with ubuntu (+ compiz).

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I dunno. I didn't install or config anything special. It just set itself up for me that way. I found I can shut it off with the "powernowd" daemon, if that is of any assistance to anyone looking into what is different with their install.

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