E8400 max temps ?

[Kaitlin Kaschak459]

ok so i was given a free E8400 core 2 duo from a friend who upgraded and im wondering what are the max temps this CPU can take obviously since it was a freebie i plan to overclock it at some point but i cant seem to find any info on the max temps this cpu can handle its the second revision of the chip i.e. the E0 version

 

[Ali Tauseef]

Hi, the max temperature limit of the E8400 is 72.4 °C.

 

[GhislainG]

ok so i was given a free E8400 core 2 duo from a friend who upgraded and im wondering what are the max temps this CPU can take obviously since it was a freebie i plan to overclock it at some point but i cant seem to find any info on the max temps this cpu can handle its the second revision of the chip i.e. the E0 version

It throttles at 100°C, but it's relatively easy to keep it below that temperature with the stock cooler if you don't overclock. A better cooler is recommended if you want to overclock, but a 65W CPU is quite easy to cool.

 

[CompuTronix]

Hi, the max temperature limit of the E8400 is 72.4 °C.

Actually, the Tcase specification is misleading, because it's not the maximum temperature limit; it's the Tjunction (Tj Max) specification, which as GhislainG has already pointed out, is 100°C, or Throttle temperature.

Tcase is a factory only measurement on the surface of the Integrated Heat Spreader (IHS) using a thermocouple, so it's not Core temperature, which is a minimum of 5°C higher. Unfortunately, Intel doesn't correlate Tcase specifications to Core temperatures, however, Throttle temperature IS Core temperature.

The following is from the Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

Section 7 - Power and Temperature

"Tcase Specifications are factory only measurements that are also calculated based on stock cooler TDP and processor TDP. Cooler models with different TDP values are packaged with different TDP processors. Several Generations of Quad Core CPU’s at 77, 84, 88 and 95 Watts were packaged with a universal 95 Watt cooler. 6th and 7th Generation i5 and i7 “K” processors are 91 Watts, but the cooler is 130 Watts and is sold separately: Intel’s Skylake Cooler - http://vr-zone.com/articles/this-is-what-intels-first-cpu-cooler-for-skylake-looks-like/97189.html.

Compared below are three Intel processor / cooler combinations with respect to TDP and Tcase Specifications:

Example 1: i7 2700K 95 Watts TDP / Cooler 95 Watts TDP / Difference 0 Watts / Tcase 72°C.
Example 2: i7 3770K 77 Watts TDP / Cooler 95 Watts TDP / Difference 18 Watts / Tcase 67°C.
Example 3: i7 6700K 91 Watts TDP / Cooler 130 Watts TDP / Difference 39 Watts / Tcase 64°C.

The higher the cooler TDP is from the processor TDP, the lower the Tcase Specification, just as when the stock cooler is replaced with a higher TDP aftermarket cooler, Core temperatures are lower. Tcase is based on different combinations of stock coolers and CPU’s, so Specifications vary. The examples above suggest the 6700K is less thermally capable than the 2700K, which is misleading, because the 6700K has a higher Throttle temperature.

Mobile processors don’t have an Integrated Heat Spreader, so they don’t have Tcase Specifications; only Tj Max. And since Intel changed the Thermal Specification for 7th Generation desktop processors from Tcase to Tjunction (Tj Max), this standardizes desktop and mobile Thermal Specifications. Intel’s long overdue change signifies that Tcase isn’t a limiting Thermal Specification, and isn’t relevant to Core temperature or Throttle temperature."

Although your Throttle temperature is 100°C, it's never a good idea to run your CPU that hot, so a more conservative and reasonable 80°C is recommended for maximum Core temperature.

CT

 

[Kaitlin Kaschak459]

Hi, the max temperature limit of the E8400 is 72.4 °C.

Actually, the Tcase specification is misleading, because it's not the maximum temperature limit; it's the Tjunction (Tj Max) specification, which as GhislainG has already pointed out, is 100°C, or Throttle temperature.

Tcase is a factory only measurement on the surface of the Integrated Heat Spreader (IHS) using a thermocouple, so it's not Core temperature, which is a minimum of 5°C higher. Unfortunately, Intel doesn't correlate Tcase specifications to Core temperatures, however, Throttle temperature IS Core temperature.

The following is from the Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

Section 7 - Power and Temperature

"Tcase Specifications are factory only measurements that are also calculated based on stock cooler TDP and processor TDP. Cooler models with different TDP values are packaged with different TDP processors. Several Generations of Quad Core CPU’s at 77, 84, 88 and 95 Watts were packaged with a universal 95 Watt cooler. 6th and 7th Generation i5 and i7 “K” processors are 91 Watts, but the cooler is 130 Watts and is sold separately: Intel’s Skylake Cooler - http://vr-zone.com/articles/this-is-what-intels-first-cpu-cooler-for-skylake-looks-like/97189.html.

Compared below are three Intel processor / cooler combinations with respect to TDP and Tcase Specifications:

Example 1: i7 2700K 95 Watts TDP / Cooler 95 Watts TDP / Difference 0 Watts / Tcase 72°C.
Example 2: i7 3770K 77 Watts TDP / Cooler 95 Watts TDP / Difference 18 Watts / Tcase 67°C.
Example 3: i7 6700K 91 Watts TDP / Cooler 130 Watts TDP / Difference 39 Watts / Tcase 64°C.

The higher the cooler TDP is from the processor TDP, the lower the Tcase Specification, just as when the stock cooler is replaced with a higher TDP aftermarket cooler, Core temperatures are lower. Tcase is based on different combinations of stock coolers and CPU’s, so Specifications vary. The examples above suggest the 6700K is less thermally capable than the 2700K, which is misleading, because the 6700K has a higher Throttle temperature.

Mobile processors don’t have an Integrated Heat Spreader, so they don’t have Tcase Specifications; only Tj Max. And since Intel changed the Thermal Specification for 7th Generation desktop processors from Tcase to Tjunction (Tj Max), this standardizes desktop and mobile Thermal Specifications. Intel’s long overdue change signifies that Tcase isn’t a limiting Thermal Specification, and isn’t relevant to Core temperature or Throttle temperature."

Although your Throttle temperature is 100°C, it's never a good idea to run your CPU that hot, so a more conservative and reasonable 80°C is recommended for maximum Core temperature.

CT

my cpu cooler is the A70 http://www.legitreviews.com/corsair-a70-dual-120mm-fan-cpu-cooler-review_1389

 

[GhislainG]

You can overclock without overheating issues with that cooler. It only is a 65W CPU that's easy to keep cool.