Liquid metal will dry and stuck to the chip after 1,5-2 years and will not transfer heat well any more. When you try to pull it off it may damage the chip. And the liquid metal is electrical conductive and there are el. components around GPU. if The liquid metal goes there it's a guaranteed death of ps3. You better use the best thermal paste without metal powder which has performance very close to liquid metal and drill holes on your ps3 case if you care much about. And if the temperature goes below 72 then you are perfectly fine.