Boost Clock: up to 4.1Ghz. The AMD RyzenT 4000 Series desktop processor contained in this package is compatible with AMD Socket AM4 motherboards when a compatible BIOS update has been installed. This item is in the category "Computers/Tablets & Networking\Computer Components & Parts\CPUs/Processors". The seller is "ebuyer_uk_ltd" and is located in this country: GB. This item can be shipped to United Kingdom.