Intel document confirms Prescott dissipates 103 W

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Foop you.

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I was suggesting that even if the die temp could be brought down, the fact that an extra 100watts of heat is being emitted within your case (and also importantly your room for some). This can have a large effect on case temperature with or without a large HSF, or a larger die contact area, the heat is still going to be there. and an extra 30-35watts of heat within your case isn't 'irrelevant' if your case is already running quite hot or if your case/room is too small to accept that heat output without becoming stiflingly (sp?) hot. That was my point :smile:

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Yes, the power is mostly dissipated as heat. (Though some of that power is also dissipated in other forms such as electro-magnetic radiation.)
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Yes, electromagnetic radiation might be another factor, but a very small one. Infrared will of course be emitted big time, and certainly some other frequencies as well; however, I think it is unlikely that any radiation emitted by the CPU is highly penetrating. This makes it reasonable to assume that a vast amount of all energy (we're talking like 99.9% or something, if not 100%) will still end up/dissipate as heat inside the room the computer is in, one way or another...
The human being expells an awful lot of heat. You might think that it's your computer heating up your room, but often it is actually you. If you were to sit there with the computer off it'd still get hot just from your charming presence. 😉
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That is absolutely true. A completely idle human being dissipates around 100-150W. Someone thinking a lot and doing intellectual work usually dissipates 400-500W (talk about CPU efficiency!) and someone doing physical workouts dissipates around 1250-1500W or so! But for matrix fans, this doesn't mean we're reliable energy sources... we still have to be fed more chemical energy than that... At least I know I have to be fed. MMmm... Hunger again... :smile:


:evil: <font color=red><b>M</b></font color=red>ephistopheles
 
the heat is still going to be there. and an extra 30-35watts of heat within your case isn't 'irrelevant'
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I certainly didn't say that. I said that <i>if</i> the heatsinks/fans can handle the heat conduction part and keep the temperatures acceptably low, <i>then</i> the fact that the processor is actually dissipating 100W (or 200W, for all I care) is completely irrelevant. You said "the heat is still going to be there" - well, that's the point, no, it won't (if HS/fan do their jobs). If heat isn't accumulated inside the case, no temperature increases will take place at all!

:evil: <font color=red><b>M</b></font color=red>ephistopheles
 
WTF do I care what the normal temp as long as it's well within the manufacturer's specification.

As for life, don't be ridiculous. The thing will last 15 to 20 years if kept to specs but even if I shorten the life to 5 years who cares? CPUs are obsolete in less than two years and most us replace them in less the 18 months.

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Mephistopheles was arguing that 100 watts is irrelevent as long as Intel came up with and adequate cooling solution.

I tried to argue that that's fine as far as the CPU goes but we still have to worry about the whole system and that I doubted that silent or quiet air cooling for 100 watts is even possible.

Guess I didn't convey the idea very well.

I wasn't too concerned about the added effects upon room heat. I didn't quote or comment on that subject.

<b>56K, slow and steady does not win the race on internet!</b>
 
At 70ºC, you are easily close to die burning. The P4 IIRC is around 75º while Athlons are up to 90ºC. It is not a good idea for Intel or anybody to not care about such high temps.
Furthermore it is a given no chip is perfect, and many above 60ºC can succumb to stability problems.

Prescott CPUs better not have that much more degrees.

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It was just an example! You are taking me too literally! I just threw out some numbers to state a point. I have no idea (and neither do you) what the nominal temperatures for Prescott will be.

All I meant is that I don't care if the temp is high or low as long as they remain within the manufacturer's recommendation.

<b>56K, slow and steady does not win the race on internet!</b>
 
I have no idea (and neither do you) what the nominal temperatures for Prescott will be.
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That's why we should all avoid speculating too much, because we might just end up all wrong... :wink:

:evil: <font color=red><b>M</b></font color=red>ephistopheles
 
I understand that. It sounded to me though you couldn't care less if it were 70ºC when it is a known fact that at such temps, it can be very unsettling and rarely completely stable for a majority.

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