Cooler master icefusion

Yes. That paste is fine. It's middle of the road thermal compound. And the temperature difference between it and other brands is maybe only 2-3 degrees. If you got it for free and need it for re-seating heatsink or re-applying old TIM then I say go ahead and use it. Remember, small glob in middle of CPU about size of pea, then place heatsink on top and let the pressure do its work.