Results 1 to 7 of 7
  1. #1
    3 Star Lounger
    Join Date
    Apr 2002
    Location
    UK
    Posts
    298
    Thanks
    6
    Thanked 0 Times in 0 Posts

    Underclocking My Motherboard

    Hi,

    I have an ASUS P5ND2-Sli motherboard with a 3.4GHz CPU (with Themaltake copper based fan) in it. My problem is that whenever I start running high CPU activity games on it (and I'm only talking things like the open source tank game BZFlag, I don't really play many games) and even occasionally during normal surfing and so on, the system will often shut down.

    Running the ASUS Probe utility I can see my CPU temperature runs on average at about 60 degrees rising to 70 degrees in normal operation. CPU speed, these days at least, isn't that big a deal to me so it occurred to me that if I can overclock a system I ought to be able to underclock it which will effectively run the CPU slower and at a lower temperature I believe but a brief look at the BIOS revealed no easy way to do this so I wondered if anyone knew of any other easy (BIOS related ways preferably but suggestions as to what I might be doing wrong on my hardware would also be welcome) I can reduce the CPU temperature and thus stop the shutdowns?

    Any help appreciated.

    Kyu

  2. #2
    Uranium Lounger
    Join Date
    Mar 2001
    Location
    New Jersey
    Posts
    6,684
    Thanks
    1
    Thanked 11 Times in 11 Posts

    Re: Underclocking My Motherboard

    Any help here ???
    <IMG SRC=http://www.wopr.com/w3tuserpics/DocWatson_sig.gif>

  3. #3
    5 Star Lounger
    Join Date
    Mar 2001
    Location
    Pickering, Ontario
    Posts
    642
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Underclocking My Motherboard

    Hi Kyu,

    Can't help with the underclocking question but can perhaps offer a few hints regarding cooling.

    I have the ASUS P5LD2-Deluxe m/b with the Intel 3.4GHz CPU. I also run PC Probe II in the background and it was constantly alerting me regarding high CPU temps. I was able to find out that 65C should be the appropriate alert level. So I changed the parameters in PC Probe to that level. I was still having heat problems so I replaced the Intel provided heat sink with a Zalman CNPS8700 copper based heat sink. I acquired a Zalman Fan Mate 2 and attached it to the heat sink's fan connectors. The Fan Mate 2 has an external control that allows you to turn the fan down to decrease noise, or up to increase fan speed and thus better cooling.

    With a few apps running, my m/b temp hovers around 39C with the CPU at 47C with the fan controller set to high. When turned down so that the noise level is reduced, the temp rises a few degrees. When my scheduled weekly anti-virus scan is running, the CPU temp starts to climb and can hit the mid 60's and set off the alert. I was able to determine that while the scan was running, Webroot's Spy Sweeper was also checking the files as they were being scanned by NOD32. So now, I turn off Spy Sweeper before the AV scan's scheduled run. That eliminated the high temp problem. When the AV scan is finished, I turn Spy Sweeper back on.

    The other suggestion would be to add cooling fans. In addition to the standard fan in the rear of my Antec Sonata II case to expel internal heat, I have added a fan in the front to draw air in from the computer room. This cross flow helps reduce the temperature.

    Hope this gives you some food for thought...

    Cheers, Bob
    Attached Images Attached Images
    Regards,
    Bob

  4. #4
    5 Star Lounger
    Join Date
    Mar 2001
    Location
    Pickering, Ontario
    Posts
    642
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Underclocking My Motherboard

    Forgot one suggestion... pop the cover and remove any dust-bunnies. Your Thermaltake copper fins might have attracted a lot of dust over time.
    Regards,
    Bob

  5. #5
    3 Star Lounger
    Join Date
    Apr 2002
    Location
    UK
    Posts
    298
    Thanks
    6
    Thanked 0 Times in 0 Posts

    Re: Underclocking My Motherboard

    Hi Bob ... I can certainly add another fan to the case of my PC though that will increase noise and when I have a bit more cash I could buy a better fan.

    Hi Doc ... from the look of it that page refers to older CPU's (the highest speed mentioned is 1GHz). That said, I presume the principles remain similar and if I undervolted my motherboard maybe that would reduce the CPU temp.

    Thanks both for the advice

    Kyu

  6. #6
    3 Star Lounger
    Join Date
    Apr 2002
    Location
    UK
    Posts
    298
    Thanks
    6
    Thanked 0 Times in 0 Posts

    SOLVED: Underclocking My Motherboard

    Running my system on its side (flat on the floor) I recorded a temperature of 81 degrees!!!

    So I cleaned and tested and all that stuff and eventually removed the Thermaltake fan to discover that one of the plastic (polypropylene?) clips had broken which presumably meant the fan was not held tightly enough to the board ... so that blew that.

    Fortunately I still had my unused Intel fan which I was able to securely attach and, though a little noisier, worked fine ... after a bit of testing I was able to get my system up & running and the temperature during normal operation (even with the side back on) is about 38 degrees.

    So thanks for the advice ... it was very helpful

    Kyu

  7. #7
    5 Star Lounger
    Join Date
    Mar 2001
    Location
    Pickering, Ontario
    Posts
    642
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: SOLVED: Underclocking My Motherboard

    Glad your system is back on the cool side. 38C is a respectful temp and should cure the reboot / turn off situations.

    Case fans are relatively inexpensive. You can get some that have speed connectors to manually control the speed to help in controlling internal temps. So if temps start to rise, consider adding another case fan.

    Cheers, Bob
    Regards,
    Bob

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •