I haven't delidded any of the BD or PD CPUs, last AMD CPU I delidded was a Phenom 2 chip I think, hadn't even had the CPU long and the paste had completely given up the ghost even idle the CPU would hit 100c+. After a delidding everything was back to normal though. If it helps any AMD CPU I delidded looked to use the same TIM intel CPUs do, a light grey coloured compound.