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Switcher Hangout (Windows to Mac)
CPU Temp. and Fan Control
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<blockquote data-quote="Nethfel" data-source="post: 1016223" data-attributes="member: 89124"><p>The Penryn CPU can go as high as 105c TCase (thermal reading at the case), but it shouldn't stay there really for any length of time. Your sitting at about 101c, which to me is a bit high for a system with proper cooling - but I'm used to the aluminum model which will stay at 90-91c at 100% usage with the fan going. What seems a bit weird to me is that your fan isn't staying on all the time with 100% usage on both cores - I know mine did.</p><p></p><p>In terms of which is more accurate - I can't answer that - I know that many times programs that supposedly read the temperatures from the same registers can report different values (sometimes it may just be because of the timing of the reads of the data itself can be different causing a difference in values) but if the two display within a couple of degrees of each other, I wouldn't worry about getting all technical about which is more accurate. If there is a huge difference then I'd be concerned.</p><p></p><p>IMHO - First do a comparison to see how far off the two temps are. If they are far off, I'd probably rather the one that is reporting high to use for figuring what to set SMC Fan Control to kick the fans on at. If Temp Monitor is showing the cpu at 100c and SMC Fan is showing at 91c then I'd probably use Temp Monitor as my guide at least for how I configured SMC.</p><p></p><p>Also: Onceyougomac: could you possibly correct your system info: Macbook Unibody 2.6 Dual, 2GB RAM, 250 GB HDD - I've checked all of the Macbook models, and none of them (outside of the pro line) offer a dual core 2.6GHz CPU - it makes it hard to figure exactly which system you have for questions like this to find the proper CPU version as different mobile CPUs can have VERY different max temp values (ie: <90c to >100c and which you have is important when determining what the max safe temp is).</p></blockquote><p></p>
[QUOTE="Nethfel, post: 1016223, member: 89124"] The Penryn CPU can go as high as 105c TCase (thermal reading at the case), but it shouldn't stay there really for any length of time. Your sitting at about 101c, which to me is a bit high for a system with proper cooling - but I'm used to the aluminum model which will stay at 90-91c at 100% usage with the fan going. What seems a bit weird to me is that your fan isn't staying on all the time with 100% usage on both cores - I know mine did. In terms of which is more accurate - I can't answer that - I know that many times programs that supposedly read the temperatures from the same registers can report different values (sometimes it may just be because of the timing of the reads of the data itself can be different causing a difference in values) but if the two display within a couple of degrees of each other, I wouldn't worry about getting all technical about which is more accurate. If there is a huge difference then I'd be concerned. IMHO - First do a comparison to see how far off the two temps are. If they are far off, I'd probably rather the one that is reporting high to use for figuring what to set SMC Fan Control to kick the fans on at. If Temp Monitor is showing the cpu at 100c and SMC Fan is showing at 91c then I'd probably use Temp Monitor as my guide at least for how I configured SMC. Also: Onceyougomac: could you possibly correct your system info: Macbook Unibody 2.6 Dual, 2GB RAM, 250 GB HDD - I've checked all of the Macbook models, and none of them (outside of the pro line) offer a dual core 2.6GHz CPU - it makes it hard to figure exactly which system you have for questions like this to find the proper CPU version as different mobile CPUs can have VERY different max temp values (ie: <90c to >100c and which you have is important when determining what the max safe temp is). [/QUOTE]
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