2 Replies Latest reply: Jan 16, 2014 8:19 AM by Hunork RSS

    i5-3570k temperatures between cores difference




      I've been an owner of an i5-3570k Ivy Bridge processor for a couple of days now.


      I'm happy with its performance but I'm concerned about the temperatures between its cores.


      Now my pc is idle and the temperature readings are (I'm using CPUID Hardware Monitor):


      Core0: 21

      Core1: 20

      Core2: 16

      Core3: 32


      I would understand up to 7-8 max degrees difference between them but it just seems that 16(!) degrees of difference between cores is too much. Additionally, I have tried running various single-core benchmarks to check out the maximum Turbo Boost frequency of the CPU and it never exceeds 3700 Mhz (although Intel says it should reach 3800 mhz).


      Under full load on all cores the temperature difference is similar - with core 3 being by far the hottest one. I'm using an aftermarket cooler Thermalright True Spirit 140 and I have tried reapplying thermal paste and resitting the cooler with same results. Full load temperatures are:


      Core0: 42

      Core1: 49

      Core2: 46

      Core3: 55


      Since I'm planning to overclock the CPU I'm concerned about this 13 degrees C difference between the cores - together with the inability of the CPU to reach 3800 mhz.


      Would I consider the specific CPU to be iffy? Shall I send it back for replacement to the retailer?



      Thanks a lot,


        • 1. Re: i5-3570k temperatures between cores difference

          The processor temperatures are measured not by core but by its overall temperature which is the one to indicate eventually, if the processor presents over heating issues. The different cores might have different temperatures and it is expected to see a 15°C-20°C difference between them since the temperature depends on the load being placed onto the processor. Please keep in mind the services running within the Operating system’s background always use processor resources; therefore, even on idle, the processor is being used.


          Still, for troubleshooting purposes you can:


          Run the Intel® Processor Identification Utility; make sure the processor is being properly recognized: http://www.intel.com/p/en_US/support/highlights/processors/toolspiu


          Also, you can verify its functionality by running the Intel® Processor Diagnostic Tool: http://www.intel.com/support/processors/sb/CS-031726.htm


          If the processor is not being properly recognized or not properly working, please make sure you have the latest BIOS version of the motherboard in use in order to have loaded the latest micro code available for your processor.


          Also, your processor specifications can be found here: http://ark.intel.com/products/65520/Intel-Core-i5-3570K-Processor-6M-Cache-up-to-3_80-GHz

          • 2. Re: i5-3570k temperatures between cores difference



            I have a problem.
            The processor: i3-2100 Motherboard: ASRock H61 U3S3.
            The two core CPU temperature is always 8-11 degrees difference.
            Idle: 28/38 degrees. Load: 47/58 degrees.
            Why is this?
            There are two cooling: Intel original, and an Arctic Freezer 7 Pro Rev. 2.
            Everything is in place, pasting, fitting is all right.
            Both are doing the same thing. Measuring the same three programs.
            Is there a solution?

            The CPU temperature sensor or bad?
            Please respond to that trouble or not!

            Thank you!