Thanks to those removable screws, I upgraded my mid-2012 with an SSD and it boots blindingly fast. Only when I do particularly complicated graphics work do I no

Thanks to those removable screws, I upgraded my mid-2012 with an SSD and it boots blindingly fast. Only when I do particularly complicated graphics work do I notice any lag - other than that, this laptop is a champion and I see no laptop on the market I would rather use