关于CPU的核心温度,表面温度---大家来上物理课 - POPPUR爱换

原帖由 yemingym 于 2008-4-27 16:40 发表
来还有很多风冷CPU温度比室温低的，完全是属于空调一类的东西。:lol:

原帖由 响当当 于 2008-4-27 18:10 发表
正说明物理学得好，大家都知道火焰表面比内核高……:devil:

原帖由 amuly 于 2008-4-27 16:41 发表

旧版的everest为普及错误的物理知识造福啊

原帖由 agrantleung 于 2008-4-28 00:23 发表
有时候是everest等检测软件的问题，有时候是bios的问题~
总之肯定不会违反物理规律的~

原帖由 ccontion 于 2008-4-27 21:38 发表
我以前用L2的E4300，无论怎么超，无论什么版本的everest，都是两个核心的温度高于表面温度（一般高5-1x度左右），也就是LZ所说的正常现象。

后来换了M0的的PE2180，主板没变（BIOS版本也没变），散热器没变，ever ...

RealTemp is a temperature monitoring program designed for all Intel single Core, dual Core and quad Core processors. Each core on these processors has a digital thermal sensor (DTS) that reports temperature data relative to TjMax which is the safe maximum operating core temperature for the CPU. As your CPU heats up, your Distance to TjMax will decrease. If it reaches zero your processor will start to throttle or slow down so obviously maximizing your distance away from TjMax will help your computer to run at full speed and more reliably too.

Other software like CoreTemp has taken this knowledge and tried to work backwards to convert DTS data to an absolute temperature which most users are more comfortable with and would like to compare.

If the DTS is reading 50 then you know you are 50 degrees away from the throttling point. If the maximum safe operating temperature for your processor (TjMax) is 85C and you are 50 degrees away then your processor must be running at an absolute temperature of 35C.

Absolute Temperature = TjMax - DTS

The formula is dead simple and you don't have to be smarter than a 5th grader to figure it out but there is one small problem.

Intel does not publicly document what TjMax is for desktop processors. TjMax is fully documented for their Mobile processors but not for their desktop Core processors. Without this reference point, your absolute temperature data could be meaningless. Intel has also confirmed that there is no secret bit hidden in these chips that a programmer can read to determine what TjMax really is. The only thing a programmer can do is guess at TjMax and if he gets lucky and the reported temps look more or less believable then everyone is happy.

原帖由 ccontion 于 2008-4-28 22:36 发表

请看我在12楼的帖子，这是怎么回事啊？

原帖由 boy3d 于 2008-4-29 16:12 发表
从来对于风冷核心温度30°c以下的不相信:lol:

原帖由 agrantleung 于 2008-4-29 16:07 发表

某些主板的某些型号的bios上某些cpu是会测温不准的~
我主板是技嘉的945gcmx-s2，刷F4版的bios，上羊肉420，温度比室温还低，刷F5版的bios就纠正了，但如果F4版bios上2140，测温是正常的~
细看了一下官网，原来 ...