Temperature Spikes

[heydre]

If any of you OC'ers out there have a minute could you share some info with the rest of us.

I am curious to see if anyone is experiencing extreme temp spikes upon POST of PC vs. temp readings after Windows loads and CPU is at idle.

Could you:
1) Take temp reading in BIOS after POST process (Turn off PC, let cool down, restart, and immediately enter BIOS).
2) Take temp reading after load of Windows w/ CPU at idle.
3) Tell what mobo and what you used to read temps.

Thanks for contributing

Heydre

[The Coolest]

My temps in the BIOS are the same temps I get in Windows with MBM5...
For specs see sig.

[Luie]

in bios:
37 c
in mobo mointor 5:
low 34 c
high 47 c
average 43 c

[heydre]

;) Thanks for the feedback so far guys. As a reminder make sure that the reading after POST is a cold boot. Keep it up.


Heydre

[Mr. $T$]

idle: 113f
stress: 135f

[-=UR=- Ranger]

Bios 26 rising till 36
Windows(idle) 35-36
Windows(full load) 39
Windows temps with MBM5

[Hoot]

If your motherboard, along with the bios revision you are using with it, supports halt-on-idle (HOI), AND your OS also supports HOI, then what you are seeing is perfectly normal. If I enable HOI on my system, The temperature drops between 10-15C once Windows loads to the desktop. Before Windows loads, HOI is not functional, that is why you do not benefit from it while booting. Here's a shock for some though. When running Prime95 Torture, with its alleged total utilization of the processor, I see a 3-4C lower temperature on the same system when HOI is anabled, versus when it is not. So, it's probably safe to say that Prime95 Torture does not run the CPU at its maximum duty cycle all the time. If you want to benefit from one of the many HOI programs like Rain, Waterfall, etc, it seems you have to have ACPI enabled in the bios when you install the OS. I believe I read that there is a way to enable it later on, if you did not originally do so, but I don't recall where. There is a tie-in to certain manifestations of motherboard instability and HOI. I do not know the specifics on this, but a number of motherboard manufacturers have their current revision of bios set so as not to support HOI. This is part of their overall attempt to make the motherboards more stable.

Hoot

[heydre]

Hoot thanks for the response...

More specifically what I was curious about was that my setup is experiencing EXTREMELY high temps upon COLD boot. Temps are on the order of 80-100C during POST process (that's not a mistype).

Some in this forum have tried to reason that the extreme temps are result of a "temperature jump" due to "so much juice at start up".

So I am merely trying to prove or disprove this notion in order to help figure out what's going on with my computer.

My setup is as follows;

MSI turbo limited edition
Athlon 1.2 ghz AXIA
Antec 400W PSU
Fong Kai fk-603 case
Thermalright SK-6 w/ sunon 5300 rpm fan
2 WD600BB drives
Pioneer slot load DVD + Plex 16x
3COM 905C net card + Firewire PCI card
Midiman delta66
SBLive 5.1 sound card

So far I have swapped out PSU, processor, mobo and heatsink. No change in outcome.

Any help is appreciated.
Heydre

[Hoot]

You dind't say what you were using to read the temperature during POST. Yes, there is an inrush of current at the precise moment of applying power, but the resistance of the +5V leads, combined with the point-contact resistance of the ATX connector and motherboard traces will naturally limit that. That inrush current lasts only miliseconds and due to the spreading effect of the CPUs mass, it will not amount to a measurable value.
I would say you are seeing some kind of measurement anomaly. In other words, don't sweat it, your CPU isn't.

Hoot