Core i5 3450 4th core temperature higher than other 3

[idata]

Hi, I have an intel core i5 3450 processor with an asrock b75 pro3-m motherboard, the case is a xigmatek asgard pro with 5 fans.

I've started using the processor with it's default fan, and the temperature of the 4th core was always higher, than the other 3 (not overall cpu temperature!).

It was about 10-12 degrees higher, than the other cores.

I have changed the cpu fan today to a xigmatek loki, now the idle temp is 18-20 for the first 3 cores, and 37 for the 4th one.

Here are some pics:

1. Default fan idle:

http://www.kephost.com/images4/2012/9/16/a1_2012_9_16_coe67fsour.jpg http://www.kephost.com/images4/2012/9/16/a1_2012_9_16_coe67fsour.jpg

2. Dafault fan load

http://www.kephost.com/images4/2012/9/20/a1_2012_9_20_0zki4y3bph.png http://www.kephost.com/images4/2012/9/20/a1_2012_9_20_0zki4y3bph.png

http://www.kephost.com/images4/2012/9/21/a1_2012_9_21_fs79jgf1w5.png http://www.kephost.com/images4/2012/9/21/a1_2012_9_21_fs79jgf1w5.png

3. Xigmatek loki idle

http://www.kephost.com/images4/2012/9/28/a1_2012_9_28_g8v51hqnhr.jpg http://www.kephost.com/images4/2012/9/28/a1_2012_9_28_g8v51hqnhr.jpg

4. Xigmatek loki load

http://www.kephost.com/images4/2012/9/28/a1_2012_9_28_0g7sofwmfa.jpg http://www.kephost.com/images4/2012/9/28/a1_2012_9_28_0g7sofwmfa.jpg

So, my question is, that is it normal, that the 4th core's temperature is always higher than the other 3?

[Adolfo_S_Intel2]

Yes, it is totally normal to see one core of the processor running 2-25 degrees Celsius higher than other cores.

This is because there will always be one core performing more tasks than the other 3 cores, even in idle you will still notice a temperature difference on one of the cores of the processor.

So at this point there is no reason to worry about it.