I used this for everything. CPU, GPU, Northbridge, Southbridge if needed I used it. A very reliable thing if not used too much. I used too much on the Phenom II X4 once and later removed the heatsink and found it dried out and burned out after about a year of use. It wasn't powdery or moonsandy, but you could tell it wasn't as wet as when it was applied, and there were gray stains from the burn. I was more careful after that and it didn't happen again, everything was fine with the devices Iβ¦