New Abit IC7-P4 Build - Two Bugs.

LeonardoLeonardo Wake up and smell the glaciersEagle River, Alaska Icrontian
edited July 2003 in Hardware
Just completed an IC7 build, with just two bugs remaining -
http://www.icronticforums.com/showthread.php?s=&postid=15643#post15643 . Why is the 3.3v line hopping around from an indicated 3.1 to 3.7? Both the BIOS and Motherboard Monitor are showing this.

I cannot detect any performance or stability problems.

Second bug is that hardware monitoring software register the CPU core temperature to be in the 90's C. Yeah right, as if the machine would even run at that temperature. Neither HW Doctor nor MBM5 will jibe with the BIOS's CPU core temp readout. All other readings by the software matches. I tried three ICY BIOS - no change to either 3.3v issue or CPU core temp readings. Oh yes, BTW, Flashmenu (Windows-launched BIOS flasher) worked perfectly!

Comments

  • AgeekAgeek
    edited July 2003
    Um, you will need a monitor that is not like your folding client-- It needs to be HT aware. IF it is not just showing Fahrenheit as C, it is taking the temp of each pipe(virtual CPU), and adding the two together.

    So, 45C on pipe 1 (virtual CPU 0) and 45C on pipe 2 (virtual CPU 1)== 90C (NOT!!!). If your BIOS is in the 45-47 C range, that is whassup. Does INTEL have a monitor software for temp on their website???? That might be HT\SMP aware. Has to be either environmental chip or the software, I would bet software in this case.
  • LeonardoLeonardo Wake up and smell the glaciers Eagle River, Alaska Icrontian
    edited July 2003
    Barron's comments:

    this is what abit says about their temp probe, which explains why it reads 60 (which is higher than it would read on another 875 board)

    "Since the temperature is 'calculated', not 'measured', the formula which the BIOS uses will make the outcome different. There is a parameter that is provided by the I/O chip vender, which we expect it to be the standard, so we use this parameter to calculate the temperature of the processor. Once this parameter in the BIOS is changed, the temperature shown in the BIOS PC health or in the hardware monitor tool will be altered. But, in the mean time, the actual temperature of the CPU is still the same. So the temperature you saw might be higher comparing to other motherboard with the same chipset, it is because we use the different parameter to calculate the temperature. We cannot say that we are more accurate, but we sure follow the standard provided by the I/O chip vender, and we believe it should be the proper one."

    in other words, if im reading this right, then the IS7/IC7 give you the REAL cpu temp instead of what we normally see, so subtract 10-15 degrees. about the winbond sensor, i dont know but my winbond 2 can only be read by the hardware doctor, and MBM5 locks up my system trying to read it"
  • LeonardoLeonardo Wake up and smell the glaciers Eagle River, Alaska Icrontian
    edited July 2003
    Right now, with CPU usage at 100% - two instances of Folding@Home running one each on each channel, the software indicated "PWM" temp is 52 and the CPU core indicated temp is 98. MBM5, SiSoft Sandra, and Hardware Doctor all report the same temperatures. (Hardware Doctor is the Intel hardware monitoring software bundled with the IC7 installation CD. Go figure - Abit may have supplied software not compatible with their own Hyperthreading mobo. But then, Abit can be goofy sometimes.)

    But then, what is this "PWM", anyway? BTW, the PWM indicated temp, both in BIOS and in software, correlates directly with CPU usage.

    Ageek, thanks for the suggestion about running a second instance of Folding as a service. MBM5 indicates two CPUs running at 100%. Windows task manager now reports System Idle as "0".
  • LeonardoLeonardo Wake up and smell the glaciers Eagle River, Alaska Icrontian
    edited July 2003
    Attributed to Abit, by Baron:
    in other words, if im reading this right, then the IS7/IC7 give you the REAL cpu temp instead of what we normally see, so subtract 10-15 degrees.

    Interesting. If you subtract 14 degrees C from the present BIOS CPU temperature of 65*C, the difference is 51. That is exactly the number that "PWM" reads in the BIOS now and in MBM5.
  • TheBaronTheBaron Austin, TX
    edited July 2003
    direct from ABIT

    ""PWM" is a circuit on mainboards to convert the voltage level from power supply unit to provide specific voltage to components (ex. Provide CPU with core voltage). We know that CPU could be the hottest component inside a PC system, and we always care about the heat dissipation of it. Actually, the PWM circuit is quite hot too; especially when CPU is at full loading, large current passes through the PWM circuit and was converted to necessary CPU core voltage. Some ABIT boards show "PWM temperature" on BIOS setup page and Windows hardware monitoring tool. This provides users possible hottest temperature inside the PC chassis, and check whether the air conditioning inside the chassis needs to be enhanced or not. When CPU works heavily, the CPU temperature could be around 60 degree C; nevertheless, the PWM temperature may achieve 70 degree C or even higher; depends on the design of thermal convection. The safety limit of the PWM temperature is about 120 degree C, however, we strongly recommend improving the air flow and heat dissipation inside the PC chassis once it rises to 100 degree C."
  • LeonardoLeonardo Wake up and smell the glaciers Eagle River, Alaska Icrontian
    edited July 2003
    Hmm, do you think then that 91-97*C reading in all three of my hardware monitoring programs might be misinterpreting, that this reading is actually of the PWM? Wouldn't that make sense?
  • TexTex Dallas/Ft. Worth
    edited July 2003
    Leo can you tell MBM5 to use the diode and not the thermister on that board? See if thats an option and if so set it and reboot.

    tex
  • LeonardoLeonardo Wake up and smell the glaciers Eagle River, Alaska Icrontian
    edited July 2003
    Tried that, but each time MBM5 changed the diode selection to "none" about one second after making the selection from the drop down menu. I'll try again.
  • LeonardoLeonardo Wake up and smell the glaciers Eagle River, Alaska Icrontian
    edited July 2003
    I'll be...

    It worked. Now showing 70* (100% load) for CPU. PWM showing 50*C.
  • TheBaronTheBaron Austin, TX
    edited July 2003
    yeah the thermisters on my board are screwed up too, but what they do is just make it lock up. who knew?
  • LeonardoLeonardo Wake up and smell the glaciers Eagle River, Alaska Icrontian
    edited July 2003
    Now showing 70*

    And if we consider the passage from Abit that TheBaron posted, if we the adjustment of 10-15*C, to compare with other boards using conventional temp measuring/calculating, that would put this board at 55-60*C, which seems reasonable at 100% CPU usage with the stock, el-cheapo heatsink.

    Thanks Tex. I know what happened now. I did try to select the Winbond diodes earlier, and they did not work. But I did not try them after I removed MBM and re-installed it.
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