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Mobile Processor Temps

Forum CPU & Components : CPUs - Mobile Processor Temps

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hoaxci5   04-10-2003 at 10:10:09 PM

Hey I'm doing a presentation for a class on the differences between mobile, and desktop processors. I cam across something that I can't explain though. How is it that a mobile processor can run up to 70 degrees hotter than a desktop processor at the same clock speed? What is different?

Thanks,
Jake

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Teq   04-10-2003 at 11:21:43 PM
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What's different is that the mobile is jammed into a much smaller space, with a tiny little heatsink and a really pathetic fan.

Look at the airspace, heatsink and fan of a normal desktop... compare that to the airspace, heatsink and fan of a mobile (laptop) processor. Frankly it's a wonder they don't just burn up.




--->It ain't better if it don't work<---

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hoaxci5   04-10-2003 at 11:36:25 PM
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Thats my question though, why can the mobile processors run stable at such a higher temp than a desktop processor? How are they build different that allows them to remain stable?

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Teq   04-11-2003 at 06:07:19 AM
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See the AMD mobile processing page, look at the tech sheets... same with Intel's mobile P4... these machines do not run 70c hotter... they can get up to 70c under full load which is within safety limits for both chips. Both to save power and run cooler with almost no heatsinks, they reduce their own multipliers at idle and higher temps. It's called "throttling".

The desktop P4 does this as a temperature measure only... both AMD and P4 mobile chips do it to save power.



--->It ain't better if it don't work<---

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