High Performance Gold Thermal Grease CPU Heatsink Compound Paste Compact Syringe Polysynthetic silver thermal compound paste maximizes thermal conductivity between the CPU and heat sink/fan assembly. Weight: 1.0g/tube Operation Temperature: -50/180c Thermal Conductivity: &gt;3.05W/m.k, Thermal Resistance: &lt;0.073c-in2/w 20% metal oxide compounds