The room where my 1.50Ghz Core 2 Duo notebook running S@H 100% was in reached 30c and by the time I noticed, the CPU throttled down, so I ran CPU-Z and said it was running at 997mhz, so I paused Seti, re-booted, and let it cool down, but it is still under-clocked, what do I do? Speed fan is also not working, it is giving a false temp.

The room where my 1.50Ghz Core 2 Duo notebook running S@H 100% was in reached 30c and by the time I noticed, the CPU throttled down, so I ran CPU-Z and said it was running at 997mhz, so I paused Seti, re-booted, and let it cool down, but it is still under-clocked, what do I do? Speed fan is also not working, it is giving a false temp.

I'd go to bios reset defaults,look around, notebooks are not that friendly.

Now its back up to 1495mhz with BOINC on, then it drops back to 997mhz when paused, but thats normal right? Though that still doesn't explain why before it was at 997mhz with Seti running.

Now its back up to 1495mhz with BOINC on, then it drops back to 997mhz when paused, but thats normal right? Though that still doesn't explain why before it was at 997mhz with Seti running.

Some laptops throttle down when running on batteries (for longer battery life) and go back up when running on external power. Could that explain it??

Now its back up to 1495mhz with BOINC on, then it drops back to 997mhz when paused, but thats normal right? Though that still doesn't explain why before it was at 997mhz with Seti running.

Some laptops throttle down when running on batteries (for longer battery life) and go back up when running on external power. Could that explain it??

No, it was plugged in the entire time, but I think it got even hotter than I thought, 34, maybe 35c.

Battery may still be trapping a lot of heat. Let it cool overnight unplugged and off. Should be fine in the morning.

Now its back up to 1495mhz with BOINC on, then it drops back to 997mhz when paused, but thats normal right? Though that still doesn't explain why before it was at 997mhz with Seti running.

When a mobile processor has nothing to do (i.e. you paused BOINC) then it will throttle down to conserve battery power & heat output, regardless of whether it is being mains or battery powered.

It will also, as you have discovered, throttle down if it gets too hot to prevent damage, but should return to normal speeds when it considers reasonable to do so.

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It will also, as you have discovered, throttle down if it gets too hot to prevent damage, but should return to normal speeds when it considers reasonable to do so.

This might not be related, but I was told by a friend to not use a laptop on the carpet floor as it sucks the fine dirt and carpet fibers into the fans and can cause problems.

Jonathan

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It will also, as you have discovered, throttle down if it gets too hot to prevent damage, but should return to normal speeds when it considers reasonable to do so.

This might not be related, but I was told by a friend to not use a laptop on the carpet floor as it sucks the fine dirt and carpet fibers into the fans and can cause problems.

Jonathan

And don't forget kitty hair.

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I recently bought a "Lapinator" (http://www.lapinator.com) that helps greatly when running the laptop on my lap or on soft surfaces like a bed or carpet.

As far as crunching on my laptop, I often leave the CPU locked down to its slowest (1.0 GHz) or an intermediate speed (1.6 GHz) to avoid excessive heat buildtup. Work units take longer but at least I don't have to worry about my laptop lighting on fire :)

I'm running linux so I can just issue a cpufreq-selector command to choose my speed. I'm pretty sure there are utils for windows that will let you do something similar.

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A member of The Knights Who Say NI!
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It's too bad It's a notebook(Not that their bad mind You), I just had to take PC1 nearly all apart to hopefully fix a problem, My cpu heatsink wasn't throughly seated(screwed down), I had to take the motherboard out of the case and remove the ram to get access to the spring loaded thumb screws to get them all the way down(talk about cramped and a sharp corner from the P5W DH Deluxes NB heatsink), Before this the PC would reset and have BSODs and It was happening every few minutes and at any speed of cpu and/or ram I set It at in the Bios(I not had this problem with the Vigor Monsoon II, Just the Ultra ChillTEC which has a slightly different mounting system that's a pain at times), And this is why I won't normally work on someone elses PC unless It's a simple thing like installing an OS(Software is ok) as working on hardware can be a royal pain in the back for Me, Literally. :( The Temps look better too, slightly as I'm now running at the speed I know the cpu /ram can do. :D Crosses fingers. ;)

So yeah heat buildup is a problem for any PC or MAC, Laptop or Desktop.

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CA HSR built a foundation, is laying Track!
PRR T1 Class 4-4-4-4 #5550 Loco, US's 1st HST

I recently bought a "Lapinator" (http://www.lapinator.com) that helps greatly when running the laptop on my lap or on soft surfaces like a bed or carpet.

As far as crunching on my laptop, I often leave the CPU locked down to its slowest (1.0 GHz) or an intermediate speed (1.6 GHz) to avoid excessive heat buildtup. Work units take longer but at least I don't have to worry about my laptop lighting on fire :)

I'm running linux so I can just issue a cpufreq-selector command to choose my speed. I'm pretty sure there are utils for windows that will let you do something similar.

I thought about underclocking to help with the heat, but I ALWAYS monitor the computer temp, and I use a laptop cooling pad that drops it 5c, but the ambient temp spiked up while I was away so maybe I sould consider it.

I recently bought a "Lapinator" (http://www.lapinator.com) that helps greatly when running the laptop on my lap or on soft surfaces like a bed or carpet.

As far as crunching on my laptop, I often leave the CPU locked down to its slowest (1.0 GHz) or an intermediate speed (1.6 GHz) to avoid excessive heat buildtup. Work units take longer but at least I don't have to worry about my laptop lighting on fire :)

I'm running linux so I can just issue a cpufreq-selector command to choose my speed. I'm pretty sure there are utils for windows that will let you do something similar.

I thought about underclocking to help with the heat, but I ALWAYS monitor the computer temp, and I use a laptop cooling pad that drops it 5c, but the ambient temp spiked up while I was away so maybe I sould consider it.

How about throttling down BOINC? There is a setting in the preferences to do this. Try running BOINC at 75% CPU and see how it goes? Better to throttle back then burn out your laptop!

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I recently bought a "Lapinator" (http://www.lapinator.com) that helps greatly when running the laptop on my lap or on soft surfaces like a bed or carpet.

As far as crunching on my laptop, I often leave the CPU locked down to its slowest (1.0 GHz) or an intermediate speed (1.6 GHz) to avoid excessive heat buildtup. Work units take longer but at least I don't have to worry about my laptop lighting on fire :)

I'm running linux so I can just issue a cpufreq-selector command to choose my speed. I'm pretty sure there are utils for windows that will let you do something similar.

I thought about underclocking to help with the heat, but I ALWAYS monitor the computer temp, and I use a laptop cooling pad that drops it 5c, but the ambient temp spiked up while I was away so maybe I sould consider it.

How about throttling down BOINC? There is a setting in the preferences to do this. Try running BOINC at 75% CPU and see how it goes? Better to throttle back then burn out your laptop!

Well, its fine now that the room it was in is now back to normal, and I will not leave it alone again.

Are you sure the CPU was throttling from the heat? Sometimes as SETI is run as a background app, the processor will throttle down (it's not time critical, so save power). You can force the speed or set profiles using proggies like RMClock if you need to.

30C temp shouldn't give a laptop much trouble, even if running 100%. Having said that, I mostly run laptops at 75-80% max, just to be on the safe side, but I've got one in my living room that's been at 100% for at least a year or two now no problems.

I undervolted the CPU in that one (RMClock) so that it runs full-speed at only 0.025v above its idle voltage, so that does cut down on a lot of heat. If you do the same, make sure you check it's stable before running BOINC though! : )

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Crunching SETI@Home as a member of the Whirlpool BOINC Teams

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I undervolted the CPU in that one (RMClock) so that it runs full-speed at only 0.025v above its idle voltage, so that does cut down on a lot of heat. If you do the same, make sure you check it's stable before running BOINC though! : )

I've been playing around with RMClock recently myself, and found that it works very well in controlling temps. I brought the voltage down a few steps and plan to bring it down further once I can find some time to do a thorough stress test.

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. . . you can also run your notebook / laptop WITHOUT the battery in it - just get the battery back in when it's dropped the voltage . . . (runs on HP Power adaptor)

i found the system (HP dv9060us - Intel 1.66 MHz T5220) runs much cooler in this instance . . .

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