magyi

Hi! Can someone tell me, how thick termal pad should I buy, 780m (Alienware17)

hi i wana buy a thermal pad could somebody please help me which one to buy? i think their is 2 size and 1 of them is the 1mm and the other one is 1.5mm. their is 2 types one is yellow color and the other one is blue and i dont know which one is which. so id like to know what size the yellow,blue thermal pad is http://kepkezelo.com/images/s2okw725cuvbjl1oebw.jpg