overheating!! 63ºC@BIOS!!!

[DamienV]

I have an overheating problem! Once i power up the system i went straight to the bios screen. I touched none of the settings and went to see the CPU's temps. 56C... 57... (...) 63.5... 64... it climed up to this in the Bios screen! Its suposed to be idle right? What its max? AMD.COM says its 90C but i find it hard to believe... I shut it down right there. The XP1900 is at 1600Mhz, and all settings are at their default - i thouched none of them....
The RAM is Samsung DDR333 CAS2.5 in slot3, the (only) board is an ASUS6600, the cooler is a Spire Copper King II (5E070B1H3G) w/ a 60x60x10mm 5000rpm fan, using AS3, and the mobo is an a7v333. Those and an ATX psu *are* my PC right now, so im just trying to level the temps...
By the way where's COP? How do you set it's settings? I saw no reference to it anywhere in the box contents, just on the box itself...
Do the temps on the CPU go up if i increase the FSB to 166 and keep the 1600Mhz internal freq?

Thankx
Damien Vessa

 

[mechBgon]

Hi Damien, your cooler is like this one, correct? I can't find a photo of the bottom, but if it has a "step" cut into it, the stepped end should be at the cam end of the CPU socket where the CPU lockdown lever pivots. If the step is not at that end, the base of the cooler will touch the cambox and tilt your cooler so it can't make full contact with the CPU. Here are some other ideas:

• The A7V333 is calibrated higher than most similar motherboards. Normal temperature range is 50C to 65C depending on how good your cooling is. If your case temperature or room temperature are high, that will affect the CPU temperature too.
• That cooler isn't too big, so if the temperature appeared to be levelling off near 65C, maybe it's just normal for that CPU/cooler combination.

The COP function is a hardware circuit that monitors the CPU's internal diode. It's apparently independent of the BIOS or any other software, so it can shut down the computer even if the motherboard itself has locked up completely. I don't think you can do anything to affect how it works, and you will not be able to access the CPU's internal diode for direct temperature readings, unless Asus releases a new BIOS or version of Asus Probe which can do it.

Currently, the temperature you see in the BIOS is measured by a socket thermistor on the surface of the motherboard. Because of this, when the actual core temperature of the CPU was 90C, you might see 75C to 80C readings in the BIOS or Asus Probe, because socket thermistors, especially surface-mounted ones, are an indirect and non-linear method of measurement.

 

[DamienV]

Hi Damien, your cooler is like this one, correct? I can't find a photo of the bottom, but if it has a "step" cut into it, the stepped end should be at the cam end of the CPU socket where the CPU lockdown lever pivots. If the step is not at that end, the base of the cooler will touch the cambox and tilt your cooler so it can't make full contact with the CPU.

Thats the cooler alright... I already knew about the step and its use, thankx.

That cooler isn't too big, so if the temperature appeared to be levelling off near 65C, maybe it's just normal for that CPU/cooler combination.

Maybe... i dont know... thing is: is it good enough? I mean 65º@BIOS?? Idleing?? And when i up the fsb to 166 during a UT session?... 75º?
Cant be!...

About the COP: cant you tell me at what temp does it shuts down the mobo?

Currently, the temperature you see in the BIOS is measured by a socket thermistor on the surface of the motherboard. Because of this, when the actual core temperature of the CPU was 90C, you might see 75C to 80C readings in the BIOS or Asus Probe, because socket thermistors, especially surface-mounted ones, are an indirect and non-linear method of measurement.

the mobo socketA has no thermistor... i think it read temps from the cpu die!

Thanks!

 

[wasnlos]

And that is the point. You get a higher but nonetheless true reading from the CPU. You should just get used to it.
If you want to improve your temps you should consider the purchase of a better or let's say more adequate heatsink.
And maybe you can improve the ventilation of your case.
It's quite simple

 

[mechBgon]

Damien, you're incorrect. The A7V333 does have a thermistor mounted on the motherboard's surface, and that's where it gets the BIOS readings and the Asus Probe readings. The socket thermistor isn't the type that sticks up, so it looks similar to the other surface-mounted devices inside the socket. You can read my experiment supporting this in this thread. So far, the only mainstream AMD board that is confirmed to report true core temperatures to the user is the EPoX 8K3A+.

The COP function would probably shut off power to the CPU at about 85C actual core temperatures, I'm guessing. The COP feature, unlike the BIOS and Asus Probe, does read the CPU diode directly.

There is more A7V333 information here that you might find useful.

 

[Iron Woode]

My friend is running an MSI KT3 Ultra and an AMD1800+. His temps don't go above 50C under load.

Do you have good case ventilation? This is very important in keeping temps down.

He is using the Spire "Super Rock" HSF. And it works great.

Are you using AS2 for heatsink compound? If not then consider it.

 

[Mikewarrior2]

it is not uncommon for a manufacturer to use an SMD-resistor in a base instead of a true "thermistor" for cpu temps. for example, earlier MSI and the latest MSI units use the same method, as do almost all the Asus socket-a boards. Go look at an a7v133. It doesn't "look like it has an socket-thermistor", but its still getting readings from teh socket-base.



Mike