My ex-roommate managed to lose my tube of artic silver II, and to replace it, he got me a tube of "Antec Reference Silver Thermal Compound". It looks, on the outside, like a tube of Artic Silver II, and he probably didnt notice the difference until after checkout. Anyway, how good is this stuff compared to AS II? Anyone ever use it? Does it dry out after a few months? I'm helping a friend put together his rig sometime this week (it has a XP 2000+, so I dont want to have bad thermal compound on a CPU such as that)... should I use this stuff, or tell my ex-roommate to take it back and get me the real stuff?