MODEL- SILVGREASE1 VENDOR- STARTECH.COM LTD FEATURES- 1.5g Tube of Silver Based Thermal Heatsink Grease Silver thermal transfer compound improves the effectiveness of CPU coolers by thermally bonding the CPU to the heatsink. StarTech.com chose this substance to put into our heat-grease because silver is one of the best conductors of heat known. This ensures that the heatsink and fan can work