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does intell celeron 633 have internal temp. sensor?

S

scrubman

Senior member
i thought i heard people refer to some type of internal temp. sensor on intel chips and i was wondering what that was all about?? anyone hear of that??? how can you get the chip to tell you the temp?

maybe it was called "thermocouple" inside the intel processors??
 
Ummm... P3s(and hence the celeron 2s) have internal diode's for temperature measurement. IN order to read this, you need a motherboard(and in your case, a slotket) that supports diode reading.

While not entirely accurate(it varies +-3C or so), it is more accurate than an on-mb thermistor solution.


Mike
 
All celeron CPU since the 300A has an on-chip thermal diode for CPU core temperature measurements. This is the most accurate temperature measurement and is a "must have" for any serious overclocker. To use the on-chip thermal diode, you must have a motherboard which supports this feature. Unfortunately, only Asus and Intel motherboard do that in the current product lines.

Abit motherboard stopped the thermal diode support two years ago. If you have an Abit BX6 Rev.2 motherboard, it can be fixed. Any Abit board newer than BX6 Rev.2 has no such function and can use only external thermister. The Socket 370 Abit board has a thermister built-in under the CPU socket. Make sure that the thermister is bent-up before installing the CPU so that it will touch the bottom of the CPU.

The AMD Duron and Thunderbird do not have on-die thermal diode.

p.s. Mike is right that you also need a slotket that supports the thermal diode. Almost all current name brand coppermine slotket do, Abit, Asus, MSI, etc. If you have a slotket two years old, it may not support thermal diode. These include the original Abit and Asus celeron slotkets.
 
so if I have a slocket that is abit (new version) and a SOYO MB I am screwed for CPU temp hey?

Whats the way to get it then?
 
Depends on which soyo mb/which bios revision/which chipset/which temp reading software.

For example, SOYO Via133A/Via133 boards do not support internal diode reading. They read cpu temp via a on mb thermistor.



Mike
 
thermite88 ------> that is AWESOME info!! thank you so much!! i do have the abit bx6r2 and an abit slotket so maybe i will be in luck!! im going to look into it... thanx again!!!!!!
 
scrubman,

Remember that you are talking about radical operation on the MB that may result in a dead MB. Anyway, best of luck if you decide to go ahead. BTW, the Abit Slotket !!! has support for the thermal diode.
 
yep, it worked! i mean, all i had to do was download a dinky little program and bam, i had internal cpu temp.

i sure wish i was a better geek cause i coulda used that knowledge 2 1/2 years ago wheni bought this board and my 300a celery staulk!!

i noticed a 5 degree drop when i just changed hsf on my celery2! the readings i hope are hi like that article said... it is 120F idle!!!
but it never goes far from there, 125F tops....
 
Actually, several recent and/or current Abit motherboards (BF6, BE6-2, etc.) are able to display internal CPU thermal diode temperatures. Some Asus and Soyo boards are also "Diode capable".

Nevin
 


<< several recent and/or current Abit motherboards (BF6, BE6-2, etc.) are able to display internal CPU thermal >>

I know of no current Abit board supporting thermal diode. Can you substantiate this info? All Asus boards for Intel CPU support the thermal diode function, including the ones using VIA chip set.
 
According to the Motherboard Monitor web site and my experience with most of the boards, the following current Abit boards support thermal diode readings.

BE6-2
BF6
BX133
SE6

MBM web site-Abit Motherboards

While the VIA chipset does support thermal diode readings on some boards, there are issues with the implementation of the capability that seem to provide incorrect readings on many board models.

Nevin
 
Nevin,

This is very good news. I wonder why Abit does not put the info at their web site. Thanks again.

However, the information at Abit's SE6 page is very confusing:

Miscellaneous
1. Support STR(Suspend to DRAM)
2. ATX form factor
3. 1 universal AGP slot, 6 PCI slots and 1 CNR slot
4. Hardware monitoring - Including fan speed, voltages, System environment temperature,and one Thermal header for CPU or other temperature monitoring

The thermal header for CPU (2-pin connector) should not be needed if the MB supports on-die thermal diode. Do you have the SE6 MB?
 


<< According to the Motherboard Monitor web site and my experience with most of the boards, the following current Abit >>




<< BE6-2, BF6, BX133, SE6 >>

Does anyone own one of these motherboard and verify that they do support thermal diode? I cannot find any information about thermal diode at the Abit site.
 
Hey there

Well, my Abit ZM6 doesn't have the on-board thermal diode ability, and I'll check the SE6/SL6 when I'm round at my mates house tomorrow....he's got both I think...

<edit> Found
this picture of the SE6 from Henry's review of the SE6 - by the looks of it, there is no thermistor under the socket, which suggests that it DOES in fact support thermal diode readout...

cheers
tweakr
 
tweakr wrote:

<< this picture of the SE6 from Henry's review of the SE6 - by the looks of it, there is no thermistor under the socket, which suggests that it DOES in fact support thermal diode readout. >>

Thanks, this is the first meaningful answer in two weeks that makes sense.

Any one uses the program CPUCool, which tells you what sensor is reading the temperature at Temp1, Temp2 and Temp3.

I still don't understand why Abit MB owners are so reluctant to talk about their motherboard. I used to see a lot of Abit defenders here.
 
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