CPU seems to be overheating, advice appreciated! (i5-3570)

Darth Windu

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Jan 20, 2010
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Hi all,

I keep getting a CPU temp warning through the AMD Gaming Evolved program (76C), so I downloaded SpeedFan.

It lists the CPU at 58C but then lists the following
- AUXTIN0 = 38C
- AUXTIN1 = 109C
- AUXTIN2 = 106C
- AUXTIN3 = 12C

Are these the CPU cores or something else? Never had an overheating issue before so any info or help would be massively appreciated!
 
Solution


The Gaming Evolved software is perfectly capable of reporting CPU temperatures including Intel's. I'm reasonably certain it's reporting the warning based on exceeding Tcase which is 67.4degC.

*Other:
1) Intel has a tool you should run:
https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=19792

This tool runs the CPU at 100% whilst monitoring the CPU temperature and ensuring all calculations return correct results. It will tell you if the CPU runs hot. As this is the OFFICIAL tool I'd trust it first.

2) Also, if you...
Speedfan is known to misreport temperatures.

I recommend using CORE TEMP then use the highest temperature reported for one of the cores. It should be well below Tjmax. Even with a stock cooler it shouldn't normally exceed 80degC even with Prime95 running in a warm room and at least one case fan.

76degC should not produce a warning either since Tjmax is about 105degC.

Roughly speaking (with only stock cooler):

1) 30 to 40degC in idle

2) 50 to 60degC while gaming

3) 60 to 80degC when converting video

It's just an estimate as many factors contribute.

If you have a stock cooler you may want to swap for either a:
a) CM hyper 212 EVO, or
b) Noctua NH-U12S

Both are more than enough. The Noctua costs a lot more but is quieter.

Use pcpartpicker to find.

*Setup fan control software (look at motherboard site first).
 
Update:

I found out that "Tcase" is 67.4degC for the i5-3570 which is probably why the warning. That uses a sensor in the CPU:

More info can be found here:
http://www.intel.com/support/processors/sb/CS-033342.htm

Tcase is the temperature of the heat spreader which is the part you attach the CPU cooler to.

*Long story short, part of your CPU is too hot and part of it is fine.

Thus, you may want a better cooler, though frankly the temperature for Tcase confuses me as it's essentially impossible to reach 105degC for Tjmax without being way over Tcase since the sensors are quite close.

**If you used a stock cooler then cleaning the cooler of all paste/tape and applying good thermal paste will make a difference, however if stock I'd get the "EVO" cooler instead...

UPDATE: I can't find the EVO for $30 and it's not at pcpartpicker. Is it discontinued and the price temporarily high?

Here's one link: http://www.amazon.com/Cooler-Master-Hyper-212-RR-212E-20PK-R2/dp/B005O65JXI/ref=sr_1_1?ie=UTF8&qid=1422004839&sr=8-1&keywords=Cooler+Master+Hyper+212+EVO
 


The Gaming Evolved software is perfectly capable of reporting CPU temperatures including Intel's. I'm reasonably certain it's reporting the warning based on exceeding Tcase which is 67.4degC.

*Other:
1) Intel has a tool you should run:
https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=19792

This tool runs the CPU at 100% whilst monitoring the CPU temperature and ensuring all calculations return correct results. It will tell you if the CPU runs hot. As this is the OFFICIAL tool I'd trust it first.

2) Also, if you don't get ERRORS while running Prime95 which is a worst-case scenario as it runs hotter than anything you'd normally do I see no issues with your cooling despite any warnings.

So if you get no errors with either of the above two programs (run Prime95 for at least 10 minutes) then I'd simply DISABLE the warning you get from AMD.

3) Case fans will affect CPU temperature but the CPU cooler is by far the most important component (and how fast the fan is spinning as you can change the profile in the fan control software which again you should get through the motherboard site if it exists. The program may be part of a larger program such as in my case it's inside Asus AI Suite II and called "Thermal Radar").

**REPEAT the tests when ambient room temperature is higher (i.e. summer).
 
Solution