Mac Pro 5.1 northbridge question on temp rating.

Discussion in 'Mac Pro' started by philipma1957, Mar 27, 2011.

  1. philipma1957 macrumors 603

    philipma1957

    Joined:
    Apr 13, 2010
    Location:
    Howell, New Jersey
    #1
    Okay I did the mod on my mac pro 2010 2.8 quad making it a 3.2 hex. My north bridge chip runs around 130 f . What are the max ratings for this chip? TIA phil
     
  2. VirtualRain macrumors 603

    VirtualRain

    Joined:
    Aug 1, 2008
    Location:
    Vancouver, BC
    #2
    Since Nehalem, there is no Northbridge. I wonder what this temp actually is?
     
  3. philipma1957 thread starter macrumors 603

    philipma1957

    Joined:
    Apr 13, 2010
    Location:
    Howell, New Jersey
    #3
    good question my iStat has had 2 number's for it one is about 99f the other 120f with lite duty. when pushing the cpu they both go up very little . When i ran the cpu test and maxed every core at 100% they stay about 100f and 118f. I pushed the cpu to 153f which is just under max.

    then I ran the cpu test over with faster fans. the cpu never got over 140f and the 2 north bridge numbers dropped to 90 and 111. see link for the 48 minute test

    http://forums.macrumors.com/attachment.php?attachmentid=278108&d=1301066126

    and link for the test I shut down due to the cpu getting hot:

    http://forums.macrumors.com/attachment.php?attachmentid=278098&d=1301062167
     
  4. VirtualRain macrumors 603

    VirtualRain

    Joined:
    Aug 1, 2008
    Location:
    Vancouver, BC
    #4
    Hard to say... It might be the Southbridge. Clearly iStat is just slapping a label on a register reading and there's no way to tell if it's a valid value or not. I wouldn't worry about it.
     

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