AMD says no thermal grease

It's not true, I've returned a chip after using Arctic Silver, even told the guy on the phone I had used it, he wasn't happy, but didn't say anything against it. Found out that the processor wasn't even bad it was my mobo being screwy but AMD was cool enough to replace my processor anyway. AMD is good about their warranty and the above is either a new policy or pure FUD. Hell the proc. I sent back even had traces of Arctic silver on it, that stuff is hard to clean off. Been their, done that, running the replacement proc now.