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best os version

  1. T

    Advice on best version OS for my Mid 210 iMac?

    I have a Mid 2010 iMac 27 which I have owned for around three years. I put a SSD in there and upgraded ram to 8GB and generally speaking it has always run just fine. Recently though it has become quite slow, not all the time but there is often a delay when clicking on something, dragging files...