Joey has a motherboard that advertises support for x64 processors which CPU will definitely work in the motherboard?

Any x64-compatible processor, such as those from the AMD Ryzen or Intel Core (from the 64-bit architecture series) families, will definitely work in the motherboard. It’s essential to check the motherboard's specific chipset and CPU compatibility list to ensure that the chosen processor is supported. Additionally, the CPU's socket type must match the motherboard's socket for proper installation.