I would like to play, but I am worried of frying my graphics card in my 2011 3.4GHz iMac, following the story here on MacRumors about a week ago. Apparently the graphic card can undergo stress through heating up extensively and fail. My model is one of the iMacs prone to this happening, and I don't want to risk it. Everything has been good on this machine and no problems, but I do not play games on it, or put the graphics card under pressure.