IC Essential E1 (RG-ICE1-TG15-R1) The IC Essential E1 is a high performance thermal compound to meet the requirements of mainstream CPU cooling. With its low thermal impedance and appropriate viscosity, IC Essential E1 can provide very efficient heat transfer and can be spread easily and evenly. It's also bundled with a grease cleanser that allows you to easily clean old thermal grease away. High Thermal Conductivity Low Thermal Resistance Electrically Non-Conductive Non-Curing Non-Capacitive Non-Corrosive Grease cleanser included for easy cleaning away old thermal grease Specifications Color Gray Specific Gravity 2.5 Thermal Conductivity >4.5 W/m-K Volume Resistivity 1.0E+10 ohm-cm Thermal Impedance <0.185 degree Celsius-in2/W Volume 1.5ml