This assures that you are placing the CPU into the socket correctly. GAA-UD3 (Rev. ) Motherboard - GIGABYTE Ready the heat sink for installation. If it does not already have thermal paste on it, place a liberal dime sized dab of Arctic Silver 5 thermal paste onto the CPU. You can use the tube to apply it directly onto the CPU, or you can spread it onto the CPU using your finger inside a clean latex finger glove. You Gigabyte[…]