Huge Savings! LOT of 4 Pieces for less than the price of 1 pieceIC Graphite Thermal Pad is a thermal interface alternative to thermal paste for LAPTOP CPU’s, While this works for CPU's in General, However we found that we get unbelievable results when used with laptop CPU, This product features top tier thermal performance that is uniquely stable across a wide temperature range -200C to +400C Thermal Conductivity: 1500W/m.k (X-Y) / 25W/m.k (Z) and when used long term should last the life of most electronic components. IC Graphite is 100% pure graphite, non toxic this pad is a solid state modular solution no messy applications to clean, no guessing if you have used the proper amount, just place pad and mount sink. Caution: IC Graphite is electrically conductive! Any contact with electrical components when the computer is turned on can permanently damage the components.