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Is OCCT's temp monitor accurate? - Page 2

post #11 of 31
for your processor, add 15C to whatever coretemp and speedfan tell you. OCCT v2, should read the correct temperatures. As a rule of thumb: If it's kind of low, it probably is so add 15°C
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post #12 of 31
Quote:
Originally Posted by 5CheeseLasagna View Post
I just checked the BIOS's System Monitor about 10 seconds ago (thanks to Hibernation), and the System Monitor shows 33°C. And that's why I question the accuracy of CoreTemp. I've trusted the accuracy of the BIOS's System Monitor ever since the beginning of owning this rig.

Based on the temps shown in CoreTemp, and based on what I learned from using the standard formula to learn that 70°F is about 21°C, I would like to say that CoreTemp is highly innacurate, and can only read the ambient temps.

I just checked with SpeedFan, and it says:

CPU: 28°C
Core0: 20°C
Core1: 20°C

20°C is 68°F. Yeah. Impossible. But 28°C is 82.4°F. A bit more of a likely story, but that still seems low by a couple degrees.

I don't know what OCCT's built-in says. It doesn't move. But it says 37 right now. I don't know what that means though. I mean, it's in the Monitoring area.

At any rate, I think I'm gonna use SpeedFan until I can find a better temperature reader.
The mobo reads Case Temp (aka TCase) which is generated from a sensor between the dies whereas CoreTemp reads form an on-die sensor. Given that fact your BIOS will always show cooler temps as it is not reading directly from the cores. For example right now my TCase (what mobo displays) is 30°C and my cores are 35°C

As far as CoreTemp it is correct most but not all of the time.
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Black Ice
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post #13 of 31
Thread Starter 
Nope. Hardware Monitor is showing 37°C for the CPU under "Intel Pentium E2180". The BIOS's System Monitor is showing the same thing. This is basically at idle.

Above that, under "Winbond W83627DHG", it says "CPU", and that's showing. 27°C. I think that's the chip's ambient temperature, whereas 37°C is the temperature reading I need to concern myself with, meaning that I need to watch that line much more than the one above it.

Again, the 37°C matches what the BIOS System Monitor says. And I don't get to see a case temp. Even if it had one, it would tell me that it's 21°C since that's what it is in this room right now.
post #14 of 31
Thread Starter 
Quote:
Originally Posted by Iceman0803 View Post
The mobo reads Case Temp (aka TCase) which is generated from a sensor between the dies whereas CoreTemp reads form an on-die sensor. Given that fact your BIOS will always show cooler temps as it is not reading directly from the cores. For example right now my TCase (what mobo displays) is 30°C and my cores are 35°C

As far as CoreTemp it is correct most but not all of the time.
So, how could CoreTemp be correct if it's telling me that it's 21-22°C when that's exactly the same temperature as the very room I am in right now? Doesn't 37°C make much more sense?

I don't know - maybe this is how it works on my particular system. But all I know is that, in my world, I cannot use CoreTemp.
post #15 of 31
Quote:
Originally Posted by 5CheeseLasagna View Post
So, how could CoreTemp be correct if it's telling me that it's 21-22°C when that's exactly the same temperature as the very room I am in right now? Doesn't 37°C make much more sense?

I don't know - maybe this is how it works on my particular system. But all I know is that, in my world, I cannot use CoreTemp.
I wasn't saying coretemp is correct. It's definitely not in your case. I was trying to explain why the mobo shows a different temp than coretemp that's all.
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post #16 of 31
What happened to Intel TAT?

I'd be more likely to believe a piece of software developed by the manufacturer of the CPU than from a 3rd party developer working off of spec sheets.
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post #17 of 31
Thread Starter 
I have TAT, but it shows low 22, 24°C idle temps. However, the CPUID Hardware Monitor shows about 37, 38°C when it's idling. That seems more likely to me.
post #18 of 31
Thread Starter 
I mean, how can my CPU be idling 2-4 degrees warmer than the air I'm breathing in this room?
post #19 of 31
Which version of OCCT are you using?

I forget how it used to be with older versions of the program, but with the latest version of OCCT (v.2.0.0), it auto-detects whatever temperature monitoring software you have active on your system and uses that to display the temps as it runs the stress tests.

For example, on my system, I only use Everest Ultimate. Even without manually selecting Everest on OCCT's drop-down menu, OCCT displays whatever Everest is displaying. The readings are perfectly synchronized when they're displayed, so I know OCCT is indeed using Everest's software to monitor temps.

Hope this helps!
    
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post #20 of 31
Thread Starter 
It does, however, I think my focus in this thread has shifted to what can I trust for an accurate temperature reading? It's looking like CPUID's Hardware Monitor is it. It says what the BIOS's System Monitor says.
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