Questions about the Alu iMacs

Discussion in 'Buying Tips and Advice' started by K20, Jun 7, 2009.

  1. K20 macrumors member

    Nov 19, 2006
    Torrance, CA
    I was wondering if the aluminum iMacs have had any heat issues related to the GPU that cause the screen to have horizontal lines and the system to lock up.

    I'm pretty close to pulling the trigger on a 24" 2.8GHz Core 2 Duo iMac w/ Radeon HD 2600 Pro, but I just wanna make sure that these systems don't have a history of heat issues related to the GPU (My current '06 white 20" iMac has heat issues with the Radeon X1600 GPU that causes lines on the screen and the system to lock up)

    Also, does the Radeon HD 2600 Pro perform better for some games than the integrated GeForce 9400M?

    Thanks for the answers.
  2. karl878 macrumors member

    Dec 8, 2005
    I have the alu iMac model you mention (24" 2.8GHz Core 2 Duo iMac w/ Radeon HD 2600 Pro), it has run 24/7 since October 2008 with no heat issues, no horizontal line problem, has never locked up.

    Don't use it for games, so can't answer that part of your question.

    My current temps are (F):
    HD 133
    CPU 157
    CPU heatsink 130
    Airport card 106
    Ambient 70
    GPU 133
    GPU diode 137
    GPU heatsink 137
  3. Hellhammer Moderator


    Staff Member

    Dec 10, 2008
    Radeon 2600 PRO handles games way better than 9400M.

    I don't have the exactly same setup (See sig) but here's my temps (C):

    HD: ~45
    CPU: ~40
    CPU Heatsink: ~40
    Ambient: ~25
    GPU: ~45
    GPU Heatsink: ~45
    HD Bay: ~45
    Mem Controller: ~40

    If you're afraid of heat issues, download SmcFanControl

Share This Page