I used it on my CPU and aside form the fact that my system died three months later (could just be a coincidence, it *is* a 7 year old MOBO and CPU that has been run through the wringer) it also corroded my Noctua NDH 15 Heatsink. Not by much but I did notice slight pitting from the corrosion. This was after I googled the crap out of using Grizzly Conductonaut liquid metal thermal paste on a Noctua Heat sink. The word from multiple sources was that it would be fine for my heatsink. Boy are they wrong.
Honestly, it's not worth it.
Honestly, it's not worth it.