How hot is your G5 running?

Discussion in 'Macintosh Computers' started by alexf, Jun 13, 2005.

  1. alexf macrumors 6502a


    Apr 2, 2004
    Planet Earth
    I am curious to see how hot others' G5s (Power Mac or iMac) are running.

    For those of you who don't know, you can download Thermograph or Temperature Monitor (free and easy to use: to constantly monitor the temperature of your processor(s), memory controller heatsink, hard drive(s), etc.

    When posting results for the Power Mac, also please be sure to state which processor speed and revision it is (i.e. Rev. A, Rev. B) as I am curious to see the differences between the 970 and 970FX chips.

    Here are my current readings:

    Machine: Power Mac G5 2.0 Rev. B

    CPU A: 144.0ºF
    CPU B: 134.4ºF
    Drive Bay: 77.9ºF
    Hard Drive 1: 104.0ºF
    Hard Drive 2: 107.6ºF
    Memory Controller Heatsink: 148.3ºF
  2. risc macrumors 68030


    Jul 23, 2004
    Melbourne, Australia
    Power Mac G5 Dual 1.8 (Rev B)

    CPU A Die Temp 132.0'F / 55.6'C
    CPU B Die Temp 125.0'F / 51.7'C
    Drive Bay 63.5'F / 17.5'C
    Hard drive 80.6'F / 27.0'C
    Memory Controller Heatsink 115.2'F / 46.4'C

    It is winter here the thing runs a lot hotter during summer, the fans are normally on constantly during the warmer months.
  3. RandomDeadHead macrumors 6502

    Feb 8, 2003
  4. y0zza macrumors regular

    Mar 10, 2005
    Idle temps for Dual 2.7GHz G5 PowerMac, 1GB RAM:
    I'm a bit concerned about the memory controller temp :eek: but the machine has been stable so far and relatively quiet.
  5. alexf thread starter macrumors 6502a


    Apr 2, 2004
    Planet Earth
    Yes, I am also concerned abou the memory controller temps - mine seem to be a bit higher than usual for my machine (often around 150ºF / 65.5ºC)

    However, for your 2.7 machine I think the high temp is normal.

    By the way, can anyone tell me exactly what is the memory controller (U3) heatsink, and why it is usually hotter than even the processors?

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