Share Your CPU Temperature on your MAC.

Discussion in 'MacBook Pro' started by Zwikker, Jun 22, 2012.

  1. Zwikker macrumors regular


    May 28, 2012
    Morgantown, WV
    Good morning people!

    So I was wondering what are your CPU temperatures when watching netflix or running other apps on your Macs?

    Here are the numbers by iStat on my Early 2011 2.2 quad core i7 with AMD Radeon HD 6750M 1GB GDDR5 graphics memory

    With Netflix on by itself;

    HD Macintosh: 34C
    CPU: 69-73C
    CPU Heatsink: 59C
    Enclousure Base: 35C
    Enclousure Base 2: 35C
    Enclousure Base 3: 31C
    GPU: 64C
    Heatsink B: 61C

    Right fan: 3635rpm
    Left fan: 3635rpm

    With Netflix, Safari(5 tabs on), iMail, Facetime, Calender, App Store, Itunes, Photobooth, iphoto, Twitter on;

    HD Macintosh: 34C
    CPU: 75C
    CPU Heatsink: 61C
    Enclousure Base: 35C
    Enclousure Base 2: 35C
    Enclousure Base 3: 32C
    GPU: 68C
    Heatsink B: 62C

    Right fan: 4108rpm
    Left fan: 4108rpm

    About 3 minutes later I wanted to write the same numbers in Fahrenheit when all above on and here are the results;

    HD Macintosh: 94F
    CPU: 166F
    CPU Heatsink: 140F
    Enclousure Base: 95F
    Enclousure Base 2: 95F
    Enclousure Base 3: 90F
    GPU: 149F
    Heatsink B: 142F

    Right fan: 4244rpm
    Left fan: 4238rpm

    Please share your computer's specs and share your CPU numbers. Therefore we can figure out who's running hot or not! :)
  2. GGJstudios macrumors Westmere


    May 16, 2008
    Everyone will have different temps because they have different room temperatures, different apps/widgets/processes running, different hardware configurations, etc.

    The Intel processors used in Macs are designed to automatically shut down to prevent damage if they truly overheat. CPU Tjmax = 105C, GPU Tjmax = 100C on i3, i5, i7 processors. (Source: Intel) If you're not already using it, iStat Pro will give you accurate readings of your temps and fan speeds, among other things.

    Unless there is a rare defect in a Mac, most temps are well within the normal operating range, considering the workload being put on it. Websites with Flash content, games and other multimedia apps will put higher demand on the CPU/GPU, generating more heat. This is normal. If you're constantly putting high demands on your system, such as gaming or other multimedia tasks, expect temps to rise and fans to spin up accordingly. It's just your Mac doing its job to maintain temps within the normal range.

    It is also quite normal for your Mac to become extremely hot to the touch during intensive operations. The aluminum body transfers heat more effectively than other materials used in computer casings, so you will feel the heat more. This doesn't indicate that it's overheating and will not harm the computer to be hot to the touch.

    Your fans are always on when your Mac is on, spinning at a minimum of 2000 rpm (for MBPs) or 1800 rpm (for MBAs, MBs and minis). iMacs have 3 fans with minimum speeds in the 800-1200 range. They will spin faster as needed to keep temps at a safe level. If they're spinning up without increased heat, try resetting the SMC. (PRAM/NVRAM has nothing to do with these issues, so resetting it will not help.)

    The intake and exhaust vents are in the back of the computer near the hinge on all Mac notebooks (except the new MBP with retina display, which has intake vents along the sides at the bottom). The iMac vent is a slot on the back near the top of the computer. Make sure the vents remain unblocked to allow your computer to perform at its best.

    Learn about the fans in your Mac
    Apple Portables: Operating temperature

    For Flash-related issues:
  3. topocalypse macrumors member

    Apr 13, 2011
    Mid-10 15" MacBook Pro CPU and gpu can get up to 80c on full load. On a hot day, it did get up to 100c at some point. Not good.

Share This Page