I've emailed the author of core temp and is in the process of clarification with him regarding the Tjunction.

Apparently, he said that the Tjunction was adjusted to 100'c based on observations that the idle temperature of these CPUs were too low. As such, he assumed that it is 100'c.

I'm still waiting for further clarification on a few other facts. Will inform you guys once I've confirmed these few facts....

just wonder how reliable coretemp is....

my temp detect by my mobo software was around 34c
but coretemp report it at 52c


This post has been edited by stevenlee: Aug 23 2007, 08:05 PM

alright dude. you remember to let us know. i need to clarify the temps before i make my move to OC it to >3.2ghz..

yeah... i know... average temps for E4*00 & E6*00 series are 50-60... while E6*50 is around 30+... tat's juz 2 weird... i need to get a thermometer to confirm this... I've been playing wif these processors while assembling rigs for my shop's customers so I know it...
But i can tell u tat Celeron 420 is the coolest of all procs... the sink is so cute and fan seldom turns if u enable smart fan control... and the sinks are still not hot...

This post has been edited by t3chn0m4nc3r: Aug 24 2007, 01:08 AM

dude let me clarify u something

its not only about coretemp...all third party

this is the reply i got from gigabyte a few months ago


and here is the attached io pic that i got from them

[attachmentid=283475]

i did write to asus also and got a similar reply..

y all this questions... after testing a few mobos with x6800 using scyte infinity and coolit... i was getting weird temps with asus and gigabyte mobos compared to evga 680
second.... asus/gigabyte p5n32e-sli and n680dq6 ... everest was showing the exact temps as core temps. while evga 680 was like heaven and hell. ( this reaffirms the the statement given above... everest vs core temp)

i hope this answers some of ure questions... as for gigabyte .. i have tested my proc with a external sensor between the heatsink and proc... it was like 3C more than the gigabyte motherboard sensor.
my bet gigabyte got it right... as i am writing this my comp temp for the qx6800 is now running at 3.6ghz 1.42v for the whole week .... gigabyte bios temp is 40C/64C ( Idle/Load) while core temp / everest is 72C/95C Idle/Load

go fly core temp heck i have tested by unplugging the pin of the pump for the coolit on the evga mobo and then only i can feel the heatsink is hot... other than that the heatsink is freaking cool.

so as for now... i do not trust core temps... for gigabyte motherboard especially trust the bios readings..



hmm kindda dumb if u think the engineers are getting the temps wrong purposely right??? even after intel gave them all the info on how to design a 775 mobo to support qx and c2d...

final evidence... that again its all about the io's

using F3 bios vs F4 bios everest/coretemp difference is 10C.
gigabyte motherboard cpu temp sensor difference 1C..

geee

This post has been edited by cstkl1: Aug 24 2007, 05:23 AM

Thx. Really informative.

However, there's a few things that need to be straightened out:
1) We do know that software monitoring of CPU temperature or voltages are not as accurate as the real thing
2) As we are not the enthusiast type that actually take a multimeter or digital thermometer to check the readings, we need some sort of way to look at the measurements - hence the need for reliable 3rd party softwares
3) The reason for this thread is that either temperature for the E6x50 series are very inaccurate or the E6x50 series are really physically colder processor compare to it's predecessors e.g. E6750 vs E6700
4) From many observations, it is probable that the temperature sensor reading is wrong, or Intel has a new Tjunction for the E6x50 series

Here's what I can conclude from reading and gathering as much info as I can about the E6x50 series:
1) The Tjunction is still unknown.
---people are just blindly saying that the Tjunction is 100'c without any proof
---Due to this, they advice adding 15'c to the core temperature readings of 3rd party software
---core temp 0.95.4 has been adjusted to 100'c Tjunction. However, the author also only guess that the Tjunction is 100'c
---Even Intel is not telling what the Tjunction is (I've emailed them)
2) Some are suggesting that the temperature sensor is inaccurate at idle but correct at load
---Because the idle temperature is lower than the ambient temperature
---Load temperature seems correct (to add 15'c makes the CPUs very hot!!!)
3) Be careful when OCing these E6x50 CPUs
---as your CPU may be running at a higher temperature than you think!!!
4) Some suggest using the "Delta to Tjunction" function in core temp
---as long as the value is not within 20-25'c, then it is claimed to be acceptable
---need further confirmation, wished I had access to any database with "Delta to Tjunction" values

That's about it I guess. I'm sure I miss out something but already headache just writing the above!!!

This post has been edited by kmarc: Aug 24 2007, 05:43 PM

hmm.. smart fan control reads temps from where ah? cause sometimes, my fan will stop, and when i look to see my temp on EasyTune (H/W monitoring software provided by Gigabyte), it's around 31C.. so, my question is, the fan spins according to the temps taken by? EasyTune or the motherboard itself?


so final answer is, Gigabyte's temps are correct?

Dunno. I'm base my temps on EasyTune5. Core temp is showing a value that is 5-6'c lower.

e.g. EasyTune5 CPU temp - 45'c but core temp (core0/1) - 40'c/40'c

I've emailed gigabyte last month to see whether Gigabyte's mobo do reflect the correct temperature for the new E6x50 series but so far no reply....

well its the point i am making is core temp is not always correct.

according to the gigabyte techie and engineers... its impossible for any third party software to get it right as each manufacturer designs their hardware and i/O's different even to a point of different boards/bios etc.

---

Added on August 25, 2007, 12:10 amhmm take it like this
ure questioning a company who had the fsb1333 procs way ahead of time before it was release into the the market...

i am sure they considered the temps...

i would trust easy tune..

This post has been edited by cstkl1: Aug 25 2007, 12:10 AM

Yup. For now, I'm believing easytune5 rather than any 3rd party software. Hopefully, there are some better way of determining the core temp in the future. Perhaps BIOS or software updates.... It's a bit frustrating to see different temps from different softwares..... At least, the CPUs prior to the E6x50 series had consistent temperature readings across most softwares.....

then this...





edit :

bigger pic here..



This post has been edited by -vip3rleon9-: Aug 25 2007, 04:26 PM

what mobo is that and heatsink...

also proc???

ambient temp??

ok guy.best try to day.vcore 1.58
stable stable wat i wan to say.air cool 4ghz e6750

This post has been edited by Vtec(Rock): Aug 25 2007, 06:01 PM


Attached thumbnail(s)

Wah! What's your ambient temp? You didn't take an aircon and direct the airflow through the casing, did you?

Nice OC. Don't tell me you wanna run that 24/7? CPU temp at 66'c is acceptable???

so... ur system is hotter than ur CPU...?
i find tat hard to believe...
and use ur pic as a link to the address u gave la...

This post has been edited by t3chn0m4nc3r: Aug 26 2007, 01:46 PM

Intel E6750 Stock G0 Stepping
Gigabyte P35C-DS3R

ambient temp around 24C lo..


around 24C. the a/c was turned on though.. but the a/c was obviously on the wall lah, whereas my pc was under the cabinet. i myself was shocked when i saw those temps.. touched the heatsink and macam sejuk sejuk sial..


cannot lah. the pic size 1280*1024, will distort the forum.. and pity them 56k users lah..

wow 24C is really cool....mine is around 30C..what cooler are u using?

stock Intel heatsink.

hhehe.. bet u can get even lower temp if u use a better cooler

lol i certainly hope so. should be getting a ACFreezer7Pro soon.