4 Volt Core Voltage and 140 degree celsius temperature.

[NEDZHIP]

I'm sorry if I'm in wrong section.

Today a friend of mine bring me a computer of his mother and asked me to upgrade it.
The motherboard is with a AMD 785G / SB710 chipset and supports both AM2 and AM3 cpus.

I already have a AMD Phenom™ II X6 1035T which is pretty good even for today's standard and I was planning to install it to my friend's computer.

I just entered the bios to see the current configuration and I was shocked the BIOS is reading that the CPU is running almost at 4 volts (3.71 v.) and the CPU temp is 140 degrees celsius(284 degrees Fahrenheit).

I have updated the BIOS to the latest version but nothing changed. CPU-Z and all the other programs are confirming the ratings too.

I believe this CPU shouldn't be able to run under these circumstances.

When I stressed the CPU to 100% for more than 30 minutes the temperature didn't changed at all. it's same as when it's idle arround 140 degrees celsius.

I wonder what's wrong with this system, and shall I be installing the new CPU because I'm scared of damaging it with such a high core voltage. It's only reading the ratings incorrectly or there is something terribly wrong.

I have changed the core voltage settings manually but it didn't helped, it's same in automatic too.

Thank you in advance.

 

[anbu13]

For me it doesn't look like a problem. May be the temperature sensor failed so it shows such unusual temperature (140 degree). Try different tool like Core Temp to view the temperature. At 140 degree the CPU would surely shutdown itself and even melt. I suspect the temperature sensor.

 

[CountMike]

Everything is wrong there, Voltage at Vcore should be about 1.32 - 1.4 with 1.5v maximum. They do tend to run hot but at 140c that's already way past melting point.
Which exact MB is that ? It has to be socket AM2+ (plus) to be able to mount AM3 processor. There's also a problem with VRM. TDP of those processors of that generation were 65W while that Phenom can push twice as much.

 

[NEDZHIP]

The motherboard is BIOSTAR A785GE not sure about PCB version.

It's too strange, I finally found a program that reads the temperatures correctly and it shows 38 in idle and 50 in 100% load, so it means the sensors are fine but idk what's wrong with the bios.
It is showing the CPU 140 degree celsius and the chipset -49 degree celsius.
Just to test I have enabled the overheat protection from motherboard and set it to shut down pc if temp goes over 80 and it is shutting down as soon as I turn on the PC which means the BIOS is really believing that the CPU temp is 140. Plus it always pushes the fan to 100% to cool down the CPU.

About the core voltage, it seems like it's incorrect too. Both bios and CPU-Z is showing that it's ~3.70volt and sometimes goes down to ~3.40volt. That's really strange. The CPU shouldn't be able to work with such a higher volt provided but I believe actually it's providing the correct voltage, again something is wrong in the readings. I'll risk and install the AMD Phenom™ II X6 1035T, it's already a $50 CPU, not a big loss even if it fries it.

 

[CountMike]

1.5v, Vcore is maximum recommended by AMD since socket 939 processors although a bit over with good cooling can be had in case of large OC. See if you could find newest BIOS for that MB and install it with old processor still in. I would be really concerned about that VRM and start new processor with 2 cores disabled.

 

[NEDZHIP]

I already updated to the latest BIOS available which is from 2010, but nothing has changed. The system is stable, everything works fine. There were installed no name 420 Watt PSU I through maybe that's the reason for higher voltage and installed a new FSP power supply but it's the same.

Anyway I will install the new CPU tonight when I turn back to home, whatever happens. It seems like it is providing the correct voltage, only showing it incorrectly in bios for some reason. I will tell the result once I install the new CPU.

 

[CountMike]

VRM is the part that regulates voltages and only grossly undervolted PSU could make a difference.

 

[NEDZHIP]

Installed the new processor and it is working just fine.
As we throught before, for some reason the motherbaord is reading the parameters incorrectly but actually everything is just fine.