A small correction regarding the laws of thermodynamics and convection. - Page 5

Right Here
It took me 1sec
TCASE 67.9°C
http://ark.intel.com/products/37147/Intel-Core-i7-920-Processor-(8M-Cache-2_66-GHz-4_80-GTs-Intel-QPI


I dont know why people tend to care too much with core temps...... Then you see them complaining why 1 core runs 10c hotter than the other...

Stick to the tcase and keep it below spec and thats it you are fine...If your tcase temp is fine your core temps are fine... Theres always a but tho but im not getting into that XD...
Screw that lol, You can add @ 10c margin to the tcase spec if you really want to...
Spec are safety, theres a higher margin just to be safe XD...
Edited by zGunBLADEz - 6/13/12 at 9:44am

leave it as exhaust, my case is about 4 feet up on my dresser and too far from the AC vent. factor in the height of the case (roughly 2-3 feet or so) and the temps at that height is considerably hotter than on the ground, sometimes a good 3-5 degrees C hotter

Thank you for that link oh great and wonderous.
Now can you give me a link to Tcase definition please?

As I understand it i7 920 automatically throttles CPU at 100c.... but Tcase is 67.9c. So should stay below 67.9c... you say safe to 77.9c (and I believe that) and Intel build CPU to START self regulating at 100c. Is that correct?

Thanks in advance.

TCase will show you a better estimate on how really your cpu cooler is working , the temp is readed outside of the chip instead of the core temps readings, unless your mobo in particular have a bad sensor reading like have seen happen before in different mother boards, i recommend watching both at the beginning in a new build just in case, if they are in range then you have a good reading..

Go to your mobo or software mobo temp readings and it will show you the cpu temp... if you use core temp for example, it will show you around 10c higher (little bit more or a little bit less) of what tcase is telling you... So if your cpu temp is around lets say 60c your core temps range would be in the 70c (rough estimate)

Myself i prefer working with TCase reading as always do and never have a single problem and this is what manufacturers put in their specs, but theres too many variables so is better watch both in a new system for awhile and see how they compare between each other...

If im not mistaken your cpu TJMax would be a 100c on the core readings, if any of your cores reach those temps it will throttle itself..

Also dont worry about the sometimes ridiculous uneven core temps, always go with the highest core temp as a measure (they call this cpu package in programs like aida or open hardware monitor)

TCase is the most simplistic temp to watch (manufacturer limit as specs, easy to follow), than getting worry and pull your hairs on the high temps your cores are running or why they are running on uneven temps or why one core is running 10c higher than the rest and what not..


Only one number to care off...

You can see more in my little experiment in here
http://www.overclock.net/t/1267656/aircooling-test-for-gurus-xd/10
How they behave between each other in different circumstances..

Will my Tcase would reach the highest measured tcase temp in my experiment which was 73c on a regular day to day 24/7 load?? Not even a chance,
That would be 10c lower than what IBT manage to load on my cpu.. My Tcase specs on my i5 2500k are (72.6C)... Im 10c below manufacturer TCase... XD

Linpack 64 is just brutal on the cpu period...
Edited by zGunBLADEz - 6/13/12 at 3:20pm

Well I do have a standing fan about 6.5 feet away from it blowing air straight at it, I dunno if that changes things

: sigh : I ask for a link to Tcase definition and got a 6 paragraph explanation of what it's for. ... and didn't even tell me where I can see this Tcase reading.

Your explanation was helpful

http://www.techreaction.net/2009/10/14/guide-to-understanding-intel-temperatures/

In another words is the reading that your mother board or monitoring software programs show as CPU TEMP...

i quote myself again because i did say it XD
The little metal plate on your cpu is just a heat-spreader perse for better contact between the chip and your cooler (convenience) (there is people that remove this plate to get better temps which i dont get into that kind of mod), not part of the original chip itself...

read the link it have more info
Edited by zGunBLADEz - 6/13/12 at 1:37pm

Okay now let's see if I got this right:
Tcase is the temp of the top of cpu chip.. the spreader plate. This temp is about 10c lower then core temp... I assume because heat sink is drawing heat out of cpu and hottest point is the core. Tcase it the maximum safe level for cpu to operate. So on mine CPU Tcase is 67.9c plus the guesstimated 10c equals 77.9c core temp.


Assuming i have this right.... why the hell don't the manufacturers give us the maximum safe operating temperature in core temp?

Because they know we will push the max by a few degrees...using "the CPU temp" (which sounds a lot better than TCase) they can get a little room for us overclockers to push into. The the TJmax temp is usually made public as well...though not as always as apparent as the TCase

As to rest of this old thread...I have never once had or seen a case that I didn't have better aircooling temps with a top intake feeding fresh, ambient air straight to the CPU cooler.

Top radiator intakes always get to dust clogged to quickly for me to like. The temp difference is nearly nonexistent anyway
Edited by Vagrant Storm - 6/13/12 at 2:40pm