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post #541 of 599
It's reading Tjunction Target, not Tjunction Max.
    
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post #542 of 599
Quote:
Originally Posted by idahosurge View Post
Thanks for the response, I have the latest 3.40 version so I should be okay.
Latest is 3.58 I think.

Quote:
Originally Posted by randomizer View Post
It's reading Tjunction Target, not Tjunction Max.
No, it is reading the #PROCHOT activation temperature. Read the docs.
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post #543 of 599
Thread Starter 
Quote:
Originally Posted by randomizer View Post
It's reading Tjunction Target, not Tjunction Max.
I think it's actually TJ Max, because individual CPUs are showing different values. If it was just the target, then they would all be identical (That's really my best arguement on it, because there is little or no info in the whitesheets)

Quote:
Originally Posted by leppie View Post
Latest is 3.58 I think.



No, it is reading the #PROCHOT activation temperature. Read the docs.
No, that is not what we are talking about. Randomizer knows what he is talking about, but this is one slight variance in something that there is not sufficent documentation on. Please use a little more respect.
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post #544 of 599
Quote:
Originally Posted by ChickenInferno View Post
No, that is not what we are talking about. Randomizer knows what he is talking about, but this is one slight variance in something that there is not sufficent documentation on. Please use a little more respect.
Sorry, didn't mean to sound offensive

Please tell me what this 'other TjMax' is that can be read from an i7 CPU?

In what MSR/CR can it be found? Or a reference to what you are talking about.

Thanks
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post #545 of 599
Thread Starter 
Quote:
Originally Posted by leppie View Post
Sorry, didn't mean to sound offensive

Please tell me what this 'other TjMax' is that can be read from an i7 CPU?

In what MSR/CR can it be found? Or a reference to what you are talking about.

Thanks
The value being read is either the actual TJ Max value for the chip or it is the TJ Max Target value for the entire series of chips. Since there have been a few cases showing 100C, 99C, or 98C so far; I believe that it is the individual TJ Max value.

What you were reffering to with the Activation of PROCHOT# is
Quote:
6.2.1 Processor Temperature
A new feature in the Intel Coreâ„¢ i7-900 desktop processor Extreme Edition series and
Intel Coreâ„¢ i7-900 desktop processor series is a software readable field in the
IA32_TEMPERATURE_TARGET register that contains the minimum temperature at
which the TCC will be activated and PROCHOT# will be asserted.
Page 76

but what we were reffering to is a PECI specification

Quote:
PECI I/O
PECI (Platform Environment Control Interface) is the serial sideband interface to the processor and is used primarily for thermal, power and error management. Details regarding the PECI electrical specifications, protocols and functions can be found in the Platform Environment Control Interface Specification.
Page 68

The PECI, for all intents and purposes here, is the DTS. It's specifications are glossed over everywhere you find it in the Whitesheets and in all of the confrences.

Quote:
A single integer change in the PECI value corresponds to approximately 1 °C change in processor temperature. Although each processors DTS is factory calibrated, the accuracy of the DTS will vary from part to part and may also vary slightly with temperature and voltage. In general, each integer change in PECI should equal a temperature change between 0.9 °C and 1.1 °C.
Page 72

They clearly talk about it but don't say anything as to what the specification is or what their intents were.
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post #546 of 599
Quote:
Originally Posted by ChickenInferno View Post
The value being read is either the actual TJ Max value for the chip or it is the TJ Max Target value for the entire series of chips. Since there have been a few cases showing 100C, 99C, or 98C so far; I believe that it is the individual TJ Max value.

What you were reffering to with the Activation of PROCHOT# is
Page 76

but what we were reffering to is a PECI specification

Page 68

The PECI, for all intents and purposes here, is the DTS. It's specifications are glossed over everywhere you find it in the Whitesheets and in all of the confrences.

Page 72

They clearly talk about it but don't say anything as to what the specification is or what their intents were.
I still dont agree. Refer to page 615 of the

Intel® 64 and IA-32 Architectures Software Developer’s Manual Volume 3A: System Programming Guide, Part 1

Quote:
"14.5.5.2 Reading the Digital Sensor
Unlike traditional analog thermal devices, the output of the digital thermal sensor is a temperature relative to the maximum supported operating temperature of the processor. Temperature measurements returned by digital thermal sensors are always at or below TCC activation temperature."
Quote:
"Thermal Status (bit 0, RO) — This bit indicates whether the digital thermal sensor high-temperature output signal (PROCHOT#) is currently active. Bit 0 = 1 indicates the feature is active. This bit may not be written by software; it reflects the state of the digital thermal sensor."
Quote:
"Digital Readout (bits 22:16, RO) — Digital temperature reading in 1 degree Celsius relative to the TCC activation temperature."
Also refer to page 610 (14.5.2.5 Thermal Status Information).

Finally, look at the definition of PROCHOT# (on the same page 68).

Quote:
PROCHOT# will go active when the processor temperature monitoring sensor detects that the processor has reached its maximum safe operating temperature. This indicates that the processor Thermal Control Circuit has been activated, if enabled. This signal can also be driven to the processor to activate the Thermal Control Circuit. This signal does not have on-die termination and must be terminated on the system board.
From the second quote, you can deduct that when PECI = 0, PROCHOT# will be asserted. Thus TCC activation temperature must be the same (or more) as the PROCHOT# minimum assertion temperature.

The final quote confirms this (unless TCC != Thermal Control Circuit for some reason).

But what I still dont understand is where TjMax can be read from.
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post #547 of 599
Quote:
Originally Posted by leppie View Post
Latest is 3.58 I think.
Thanks, for whatever reason when I looked last night the latest that I found for download was 3.40, just downloaded 3.58.1
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post #548 of 599
What would you say about running a q6600 24/7 use @ [1.57 vcore in BIOS] [1.536v in cpuz idle] for a 3.4?
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post #549 of 599
Quote:
Originally Posted by ChickenInferno View Post
The value being read is either the actual TJ Max value for the chip or it is the TJ Max Target value for the entire series of chips. Since there have been a few cases showing 100C, 99C, or 98C so far; I believe that it is the individual TJ Max value.
It could also be that Intel are changing Tj Target between batches for whatever reason (differing temperature tolerances perhaps?). They have no reason to keep it constant for the entire family.
    
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post #550 of 599
I'm so confused... I am running a 95c TJMax for my i7. Is that about right?
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