Hello:The CPU has been tested before shipping the project. Please confirm whether the CPU is compatible with your motherboard. Avoid unnecessary return items. If you are not sure about compatibility issues. You can contact me. Basic parameters CPU series: Xeon E5 v4 series Core code: Broadwell Number of cores: eight cores Number of threads: sixteen threads CPU frequency: 2.1GHz Dynamic acceleration frequency: 3GHz L3 cache: 20MB Thermal Design Power (TDP): 85W |