Lapped core 2 duo IHS pics

[little_scrapper]

celemine1Gig,

There are alot of other factors that may have affected the result of your study. have you taken into consideration the ambient temp, the amount of load and voltage that you put into the cpu before and after the lapping process? what sort of device or software did you use for this experiment of yours?

I would venture to say that he infact did take ambient into acct, the loading programs he used dont change because the CPU is lapped(thats just dumb to imply), nor do the programs used to monitor the temps.

celemine1Gig,

on board monitoring sucks. and i say this, because i have used each and every software known to man,,,,, the whole nine yards of temp monitoring if i may call it - and i was unsuccessful. why? because they all rely on a diode, embedded on your motherboard, and temps may vary from board to board. asus being the most nasty.

You seem to think that the actual amount of temp drop achieved from lapping a cpu and HS has something to do with a diode??? Thats some crazy logic...hehe. And/or your saying that temp monitor software sucks because of the diode on the mobo??? This is also some crazy logic. What does ASUS's thermal diode have to do with how crappy the programmers were at writing a temp monitoring software??

Your obviously not an engineer, not even a technician I would bet. The diode is a very simple device. It simply allows more or less current to pass through it depending on its temp. The monitors generally measure the voltage, Vbe(voltage base-emmiter), which is based on the collector current of the transistor diode. Being someone who has personally worked with a dozen different kinds of thermal diodes, I can say that series resistance is the most relavent factor in determining how acurate the readings are. Because when measureing then directly I can say that most diodes current at a fixed ambient was within .2C and only around .5C when monitoring tools were not properly accounting for the series resistance, but thats an engineering fault not the diode.

Feel free to correct me if im wrong here its been many years since I had solid state class.

celemine1Gig,


do you know the difference in temperature reading i get from the on board crap versus the external temp device? you wont belive it.... 25 degrees!

What, where is your monotoring device measuring ??? Are you somehow able to measure the cpu die directly???

celemine1Gig,

and for TAT or coretemp to detect 75 degrees on full load, shouldn't my cpu be shutting down by itself already? i once did an experiment to check my thermal sensor accuracy, i ran my watercooled system and unplugged the water pump until it reached its maximum threshold of 70 degrees, and it never failed to shut down by itself each and everytime before or after reaching 70 Degrees.. This only goes to show that thermal specification of 70c degrees is indeed the maximum temperature at the maximum Thermal Design Power (TDP) value that the processor can handle.

Your saying because you cpu didnt throttle at 70C that this proves that this is its Tj Max and its shutdown temp??? All I can say is "wow". you need to reread what you wrote and think about it.

the Tj Max (where throttling kicks in) of my E4300 is 85C. I killed the fan and blocked my HS and let my temp climb until the throttling kicked in. Using speedfan to measure temps and voltage. At 83C the multiplier dropped from 9 to 6 and the Vcore dropped way down. Thats within 2C of where Tj Max is supposed to be. "Check Mate!"