Safe to run my mini C2D at 100% for the next 20 days?

Discussion in 'Mac mini' started by C8XY, Aug 14, 2011.

  1. C8XY macrumors 6502

    Joined:
    May 11, 2008
    #1
    As the title suggests, I intend to run my poor mac mini at 100% CPU for about 20 days, give or take.
    I have a large handbrake queue and I only realised it would take this long when I noticed its taking ages to encode these films!
    So the question is, will my mini survive?

    CPU temp runs between 90 and 95 C.

    Its a headless machine purely being used for this job at the moment, its a 2ghz core 2 duo running constantly.

    Opinions on the best way to go about this appreciated :)
     
  2. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #2
    It should be fine. But you may want to run smcFanControl to keep its fan high.
     
  3. C8XY thread starter macrumors 6502

    Joined:
    May 11, 2008
    #3
    Thought about this but the mini sits near the TV so due to noise, I’ll leave OS X in control of the temp. Am I right in thinking as long as its below 100C its within its "normal" operating temp?
     
  4. tbayrgs macrumors 603

    tbayrgs

    Joined:
    Jul 5, 2009
    Location:
    Florida, USA
    #4
    While I was encoding my library, I generally ran my Mini (exact same as yours) overnight, almost every night for months on end. As I'm sure you're aware, encoding blu ray disks at 720pcan take a good 8-10 hours on that machine and I was doing one or two a night for quite a while, so I think the mini can handle it but I'd suggest cutting that job in half--maybe 12 hours on 12 hours off, just to be safe.
     
  5. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #5
    That would be very hot for the computer. Intell CPUs have a safety heat switch that will turn off the CPU if it gets too hot. If it does get too hot, the Mini will turn itself off. If it does get above 100C, then its time to start panicking.

    Another thing to try is to keep good airflow around it and a low room temperature. That should help keep the Mini cool.
     
  6. lilsoccakid74 macrumors 6502

    Joined:
    Apr 13, 2010
    #6
    Just so you know, even doubling your minimum fan speed should not get noticably louder. My 2009 and 2011 mini dont tend to really become noisy until at least 4000+rpm, and my minis are 2 feet away from me when im using them:)
     
  7. C8XY thread starter macrumors 6502

    Joined:
    May 11, 2008
    #7
    Ok thanks guys, I’m now running smc and the CPU is around 80-85C
    I’ll just let it run the queue to the end, if it breaks the C2D is on a socket so I’ll just swap it :)
    Good to have peace of mind though
     
  8. Mak47 macrumors 6502a

    Joined:
    Mar 27, 2011
    Location:
    Harrisburg, PA
    #8
    It should be fine, but 20 days is a bit long. You might try at least pausing your Handbrake queue for a few minutes here and there to give it a chance to cool down.

    If you want to be really safe, make sure your fans are controlled at a high rate, then remove the bottom cover and elevate the mini. The airflow will be much higher that way. This is unnecessary for normal use, or even for a day or two of high CPU usage, but 20 days is a long time.
     
  9. lilsoccakid74 macrumors 6502

    Joined:
    Apr 13, 2010
    #9
    I feel like if i put my 2009 mini at around 2800-3000rpm minimum it would stay closer to 70-75, but your also running the cpu at the max pretty much. As long as you picked up the fan speed, I would not be too worried, just try to give it a couple minutes to cool down each day if possible. Many people kept the old mini's on their side to keep them running cooler also btw.
     
  10. theSeb macrumors 604

    theSeb

    Joined:
    Aug 10, 2010
    Location:
    Poole, England
    #10
    I don't think that 12 hours off is necessary, but consider that this isn't server grade hardware designed to run 24/7. I would suggest that after around every 12 hours, you allow it to idle for about 20-30 minutes.

    In theory it should be fine without doing this, and I wouldn't hesitate to say it's ok if you had a normal size case with plenty of cooling, but I would recommend to give it a "small break". I am not sure how it would handle 100% CPU load for 20 days.

    ----------

    OSX will boost the fans to maximum as the CPU temps approach 90 Celsius so you'll hear it anyway.
     
  11. Gav2k macrumors G3

    Gav2k

    Joined:
    Jul 24, 2009
    #11
    Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5)

    Op ignore everyone that's said give it a break etc etc. It'll get through the q just fine!
     
  12. theSeb macrumors 604

    theSeb

    Joined:
    Aug 10, 2010
    Location:
    Poole, England
    #12
    20 days at 100% CPU and fans at full blast within that cramped case? I would be hesitant to make such a statement.
     

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