Why does iStat show what looks like 4 cores?

Discussion in 'iMac' started by Michael CM1, Nov 6, 2010.

  1. Michael CM1 macrumors 603

    Feb 4, 2008
    I just bought a new iMac with the i3 processor. On my MacBook Pro with a C2D, iStat showed two graphs for my processor cores, which I expected on a dual-core CPU. But now on iStat, it shows four graphs. I am pretty sure the i3 isn't quad-core. Does anybody know why iStat would do this? I know I read that the i3 does hyper-threading, but I don't think that would simulate four cores. Thanks for any answers.
  2. killmoms macrumors 68040


    Jun 23, 2003
    Washington, DC
    Hyper-threading = virtual cores. So they show up as cores in Activity Monitor.
  3. sammich macrumors 601


    Sep 26, 2006
    Hyper-threading is a feature that makes a single core appear as two logical cores to the Operating System. So that makes 2 cores x 2 logical cores = 4.
  4. Michael CM1 thread starter macrumors 603

    Feb 4, 2008

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