I have an i5 2500k with an Asus p8z68-v motherboard, I'm using the stock Intel cooler and I'm running at stock speeds / no overclocking. I'm getting idle temps of about 25 to 28 degrees Celsius, however when I start playing a game my temperatures rise very quickly up to the 70sC. I have reseated my cooler, re-applied thermal paste, checked voltage in my bios (everything is on auto for voltage), etc. This problem has just started and I never got temps like this before. What do you guys think? Is there a chance that my cpu is defective and I need to get it replaced by Intel?