Thermalright ultra 90 and AMD 3800 x2 (939)...

[majmera]

Hi Folks,
I recently upgraded my CPU to a 3800 X2 (939 socket). I am using a Thermalright ultra 90 to cool the CPU, but I keep seeing idle temperatures of 70c+.
I have removed the cooler and reapplied the thermal compound, but still no good. I am using a 90mm panofan on the Heatsink and it is moving air in the same direction as my case fan.

Could there be something wrong with the CPU?

Thanks
Mayank

 

[Lasthitlarry]

First thing is to check your FSB settings and other CPU speed settings to make sure you are not trying some crazy overclock, and check the temperatures in BIOS just to be sure (I am guessing you are seeing these temps from a windows application).

If your cpu fan speed is adjustable, set it to the max (check cabling AND BIOS)

When you are applying thermal compound, are you using any guides? You can put too much or too little and it will make things worse. Double check that your case fans are pointed in the right way (front should blow air in, back should blow air out).

Make sure the heatsink is installed correctly and the base is contacting the CPU (some look the same either way, but there is only one way ; i.e: backwards)

Hope that helps... if not, more than likely a bad CPU, but could be bad mobo (try a different CPU to test)

 

[BassBomb]

If you touch the heatsink is it actually getting hot? Otherwise it seems like it would be a heavily incorrect reading.

70C is more than enough to feel through a CPU heatsink

 

[majmera]

The mobo has been running fine with an older 3000+ that I upgraded from. I'll check to see if the CPU and Heatsink feel hot\warm.
Also I am not OCing, so don't think the BIOS settings could be a problem.
Thanks for the help

 

[BassBomb]

I'd also check online to see what Bios version supports your new CPU. It may be that you need to flash to a newer bios.

 

[DerwenArtos12]

Originally posted by: BassBomb
I'd also check online to see what Bios version supports your new CPU. It may be that you need to flash to a newer bios.

QFT, had a similar issue with the same motherboard and a 4200+ on a customer build when the duals first came out, the shipping BIOS was overvolting the chip by like .075v

 

[majmera]

OK, I checked by actually feeling the heatsink while the PC was running. It doesn't feel warm, but the CPU temperature measures at 67c. I checked the BIOS, I am running the latest version by MSI and the CPU voltage in BIOS shows 1.2V

Any more ideas?

Could it be possible that my motherboard is not sensing the temperature correctly?

 

[DerwenArtos12]

Originally posted by: majmera
OK, I checked by actually feeling the heatsink while the PC was running. It doesn't feel warm, but the CPU temperature measures at 67c. I checked the BIOS, I am running the latest version by MSI and the CPU voltage in BIOS shows 1.2V

Any more ideas?

Could it be possible that my motherboard is not sensing the temperature correctly?

I dont' actually say this too often but, your voltage is too low. It's very unlikely but, it could be causing an erronious reading. Thats my last guess before simply saying it's a bugged chip but, so long as it's not hot to the touch, don't worry about it.

 

[majmera]

What should the voltage be?
Do you think it is the chip or the MOBO?

 

[DerwenArtos12]

Originally posted by: majmera
What should the voltage be?
Do you think it is the chip or the MOBO?

Standard voltage for any non LV or ULV part is between 1.3 and 1.35v. Could be anything or a combination of everything. Check your voltages in the BIOS, make sure all three rails are within about 10% of where they're supposed to be then check your settings, could just be a hiccup in the BIOS, i've seen stranger things.