4 Replies Latest reply: Aug 20, 2012 2:25 PM by kdwykleingeld RSS

    DH77DF; PCH Core Voltage out of range

    RAPWare

      I just purchased an Intel DH77DF, in combination with an i7-3770, as replacement for my current HTPC.

      After I finished installing the OS, all drivers etc, I installed the Intel Desktop Utilities Version 3.2.

       

      When I ran this utility it warned me that the PCH Core Voltage was "out of range". It shows a voltage of 2,040 Volt.

      The temperature of the PCH is 61C (running idle).

       

      To make sure it was not a PSU related problem I also tried using a different PSU. I got the same reading with the other PSU.

       

      Does this mean the motherboard is defect? Should I RMA it?

        • 1. Re: DH77DF; PCH Core Voltage out of range
          phil_l

          Hi

           

          The PCH has a range of voltages it requires on several pins, these are 1.0, 1.05, 1.5, 1.8, 3.3 and 5 volt.

           

          Your reported voltage of 2.040 doesn't sit close to any of those, perhaps it is the 1.8 which is running high, the maximum allowed variation on the 1.8 volt input is a maximum of 1.89.

           

          Is this the software mis-reporting the voltages, is it the chip measuring the voltage being inaccurate, or the PCH is actually getting too much voltage? It's hard to know for sure.

           

          Have you checked your BIOS settings are configured correctly and tried resetting to defaults?

           

          The PCH temperature seems fine, mine runs at 50 to 60 degrees and they are rated upto 108 degrees.

           

          Try HWMonitor and see if this gives you the same voltageshttp://www.cpuid.com/softwares/hwmonitor.html

           

          Regards

          Phil

          • 2. Re: DH77DF; PCH Core Voltage out of range
            RAPWare

            > Have you checked your BIOS settings are configured correctly and tried resetting to defaults?

             

            Yes

             

            > Try HWMonitor and see if this gives you the same voltage

             

            HWMonitor returns the following voltages:

            CPU VCORE: 1.04

            VIN1: 1.04

            AVCC: 3.34

            3VCC: 3.33

            VIN4: 1.02

            VIN5: 1.16

            VIN6: 0.05

            • 3. Re: DH77DF; PCH Core Voltage out of range
              kdwykleingeld

              Hi, i have a dh77df mobo with i3-2120t

               

              I get a lot of BSODs .. most of the time x09c and x101.

               

              I was looking at voltages ...

               

              In the bios i see 1,05v for vcore

               

              But with IDU and with Hardware Monitor i see    vcore raning between 0.94v and 1.06v .. most of the time it is below 1v

               

              Looking at suggestions for my BSODs i see   "increase vcore" ...

              However my bios (0.95) on my dh77df mobo does not allow me to do so.

               

              And this constantly fluctuation voltage seems strange ??

               

              Qestions :

               

              1)  is this to low maybe ?

              2) is there some way / trick to change it ?

              3)  there also was a problem with the memory voltage !!!   ...   setting it to 1.5 resulted in 1.76 volt... i had to reduce to 1.4 in order to get it to 1.5 v (which is within intel specs)

               

              Is there something i can do with any of the bios settings to get this vcore permanent above 1.05

               

              Or can this be a malfunctioning cpu or mobo ??

               

              thanks for any replies ... 

               

              reg koen 

              • 4. Re: DH77DF; PCH Core Voltage out of range
                kdwykleingeld

                Hi, (warranty)  replacing the CPU resolved my issue!

                 

                Great support from Intel !

                 

                regards Koen