A word of warning for anyone desiding to use this stuff. It comes in two tubes and you mix it one to one. I bought this stuff today on advise from a shop called north east periferals in aberdeen/scotland. I was wanting to cool my athlon 2800 futher. I put it on my cpu and it actually heated it up to 60c. Not only that. When I tried to get the heat sink back off it was stuck like cement. I tried gently getting it off to no avail when it took half the cpu die off with the heat sink. My 2800 was screwed. I went back up to the shop adn complained but the owner felt that I'd used to much force so would'nt replace it. I did'nt. The only good thing he did was give me a 2400 replacment for £50 and told me that if I took it back in within two weeks un damaged he would refund the 2400 and let me use the £50 to put towards another 2800. I must say I'm very very anoyed at the shop. They've cost me a fortune.