Messages in this thread |  | | Date | Sat, 9 Jun 2001 00:22:50 +0300 (EEST) | From | "L. K." <> | Subject | Re: temperature standard - global config option? |
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On Fri, 8 Jun 2001, Albert D. Cahalan wrote:
> Michael H. Warfiel writes: > > > We don't have sensors that are accurate to 1/10 of a K and certainly not > > to 1/100 of a K. Knowing the CPU temperature "precise" to .01 K when > > the accuracy of the best sensor we are likely to see is no better than > > +- 1 K is just about as relevant as negative absolute temperatures. > ... > > Even if we had or could, anticiplate, sensors with a +- .01 K, > > the relevance of knowing the CPU temperature to that precision is > > lost on me. I see no sense in stuffing a field with meaningless > > bits just because the field will hold them. In fact, this "false precision" > > quickly leads to the false impression of accuracy. Based on several > > messages I have seen on this thread and in private E-Mail, there are a > > number of people who don't seem to grasp the fundamental difference > > between precision and accuracy and truely don't understand that adding > > meaningless precision like this adds nothing to the accuracy. > > > > I can see maybe making it precise to .1 K. But stuffing the bits > > in there to be precise to .01 K just because we have the bits and not > > because we have any realistic information to fill the bits in with, is > > just silly to me. Just as silly as allowing for negative numbers in an > > absolute temperature field. We have the bits to support it, but why? > > The bits are free; the API is hard to change. > Sensors might get better, at least on high-end systems. > Rounding gives a constant 0.15 degree error. > Only the truly stupid would assume accuracy from decimal places. > Again, the bits are free; the API is hard to change. > > One might provide other numbers to specify accuracy and precision. >
I really do not belive that for a CPU or a motherboard +- 1 degree would make any difference.
If a CPU runs fine at, say, 37 degrees C, I do not belive it will have any problems running at 38 or 36 degrees. I support the ideea of having very good sensors for temperature monitoring, but CPU and motherboard temperature do not depend on the rise of the temperature of 1 degree, but when the temperature rises 10 or more degrees. I hope you understand what I want to say.
Regards,
>
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