i5-3570k temperatures high?

[Benjamin Ranaei]

I have an i5-3570k overclocked to 4.0 Ghz at stock voltage, when I'm playing GTA V and other CPU intensive games my CPU gets to around 80-85 °C and would maybe spike up to 90 for a second. 

 

I would not think anything of this if I was using a stock cooler or something but I am using a 120mm Asetek liquid AIO.

 

Shouldn't I be getting better temps? Is this safe? My cpu idles around 30-35 °C on the desktop.

[Mateyyy]

120mm AIOs, especially the slim ones, don't perform that great really even compared to half-decent air coolers.

Also, iirc Ivy Bridge weren't soldered like the previous Sandy Bridge chips, and the TIM on them wasn't particularly noteworthy, hence why they ran hotter than the previous gen. It wasn't until either Haswell or Devil's Canyon that they improved the TIM under the IHS.

[BobVonBob]

It's totally within safe temps, but how long has the cooler been mounted? The thermal paste could be old and dry by now and in need of replacement.

[Statik]

1 hour ago, BobVonBob said:

It's totally within safe temps, but how long has the cooler been mounted? The thermal paste could be old and dry by now and in need of replacement.

Incorrect. Max safe temp for that chip is 67C.

 

 

OP, I would recommend toning down the OC or get a better cooler.

[BobVonBob]

5 minutes ago, Statik said:

Incorrect. Max safe temp for that chip is 67C.

 

 

OP, I would recommend toning down the OC or get a better cooler.

That's T_CASE max not T_JUNCTION max which is what the CPU temp sensor reads. T_JUNCTION max on the i5-3570K is 105C.

[Statik]

1 hour ago, BobVonBob said:

That's T_CASE max not T_JUNCTION max which is what the CPU temp sensor reads. T_JUNCTION max on the i5-3570K is 105C.

That information is not correct.

Intel's Thermal Specification (Tcase) for the i5 3570K is 67C, which is CPU temperature, not Core temperature. Core temperature is 5C higher than CPU temperature due to sensor location, so Tcase +5 makes the corresponding Core temperature 72C.

This means that mid-70's are safe operating temperatures.

Throttle temperature is 105C.

[unclewebb]

Intel's core temperature sensors are deliberately located on the hottest spots on the core. These sensors control thermal throttling and they are not activated on the 3rd Gen CPUs until 105°C. The thermal shutdown (THERMTRIP) is actually 25°C beyond that which is 130°C.

 

The Tcase spec can only be accurately measured by embedding a thermocouple into the top of the IHS. This spec is for system builders, not end users. Intel does not expect end users to hack into the IHS of their new CPU with a Dremel. 

 

The relationship between Tcase and the peak core temperature is definitely not +5°C. It will vary depending on the cooler being used and the type of software being run. This difference can hit 30°C. The Tcase spec allows system builders to design computers so they do not thermal throttle. If their heatsink can keep the Tcase temp at 67°C then the CPU will rarely if ever need to thermal throttle during normal use.  That is the one and only purpose of the Tcase spec.

 

 

Edit - The good old high temperature testing days. Here is my 3570K running at a peak core temperature of 101°C without a hint of throttling for the Intel CPU or Intel GPU. No need to throttle at that temp. Not hot enough yet.

 

https://i.imgur.com/qtZ7qWh.png

[Benjamin Ranaei]

2 hours ago, BobVonBob said:

It's totally within safe temps, but how long has the cooler been mounted? The thermal paste could be old and dry by now and in need of replacement.

I replaced the thermal paste a couple moths ago

[unclewebb]

2 hours ago, Benjamin Ranaei said:

4.0 Ghz at stock voltage

On most motherboards, the stock voltage is too much. Try running CPU-Z. What voltage does it report when the CPU is loaded? You are better off going into the BIOS and setting a fixed voltage. You might be able to decrease the CPU voltage by -0.1V or more compared to stock voltage. This will make a big difference to your temps.

[Benjamin Ranaei]

6 hours ago, unclewebb said:

On most motherboards, the stock voltage is too much. Try running CPU-Z. What voltage does it report when the CPU is loaded? You are better off going into the BIOS and setting a fixed voltage. You might be able to decrease the CPU voltage by -0.1V or more compared to stock voltage. This will make a big difference to your temps.

Underload, the CPU hits 1.224 V