Had me for a motherboard exchange a cheap 2.99 Euros paste taken. The difference is enormous. The cheap (alleged silver) paste could cool the processor (Phenom II X6 1045T) insufficiently. Even under minimum load scrambled the thermometer at 40 ° plus. Under full load, 55 ° plus achieved quickly. With the Arctic Silver 5, the processor reached under full load, at best, 42 °, to a minimum of the temperature is kept constant at 30 °. Strong buy recommendation!