Tualeron temps

merry

I have recently installed a 1.3 GHz Celeron Tualatin in my system. The CuMine (800EB) used to work at virtually same temp as system (25~35C variable with season, oversized cooler), while the Tualatin works at least 7C higher than the system (same cooler). However both processors top at ~40C full load.

So, the Tualatin works better by only gaining (losing) 5C between idle and full load, but operates much higher idle.

Is this normal, ie the 0.13 technology normally runs at higher average temperatures than the Coppermine? Anybody else tried both Coppermine and Tualatin in the same box, same cooler?

DriveEuro

I was under the impression that they did run hotter. .13 micron means smaller everything. Cram more stuff into a chip and send juice through it then it is bound to get hotter. More transistors in there than in a .18 chip. So prolly gonna be more heat though. Sorry I don't know for you sure though.

digitalwanderer

I drift thru a haze of past posts presented...

I have a 1.4 tuly that used to run about 46c idle 52c high load with a high of 57c playing with OCing. That's using a solid copper cooler of a make and manufacturer who I can't remember now, but it outperformed a FOP38 with a 56CFM 60cm screamer on it.

That was before me 10" fan mod, now it's idling around 45c and going up all the way to 48c under full load at 1.750

...an eerily remembered memory of a post that no longer exists...

DriveEuro

Oh geez DIGI, you aren't gonna let this fade ever? HAHA You post something about that all the time. Well, although, NOTHING beats a DIGI mod. I forgot.

JCLW

To sum up what I had written previously:

The PIII-800 @ 1.7v makes about ~21W of heat. The Tualeron makes about ~32W. Obviously it makes more when overclocking.

The number of transistors doesn't really change. They just get smaller, and run at lower voltages, and hence make less heat.

For comparison the PIII-800-S (133FSB, 512k L2, 0.13, FC-BGA) only makes 11W. So comparing the PIII-800EB to the PIII-800-S you could say converting from 0.18 to 0.13 results in half the heat.

IMHO the IHS is what gives you your different temp curve. At idle the heat has to pass through an extra medium (core->TIM->IHS->TIM->heatsink->air instead of core->TIM->heatsink->air) so the heat transfer efficiency is lowered. But, as the difference in temp between the heatsink and core grows larger and larger, the greater contact area of the IHS comes into play, allowing more and more heat to be transfered. At some temp the efficiency gained from the greater contact area will become greater then the loss of efficiency due to the extra medium. Above this temp the IHS will keep the core cooler.

So in general, cores with IHSs idle higher, but run cooler loaded, then cores without IHSs.

You can tell the IHS is working because even though the Tualatin is making over 50% more heat it's still running at the same temp loaded.

Some people over at overclockers.com pulled the IHSs off their chips. In the end I think everyone came to the conclusion that it was a bad idea.

- JW