Q: What is "CPUID Maximum Value Limit" in the CPU configuration of BIOS setup menu for? On what condition should it be enabled?
A: When CPUID instruction is executed, newer CPU may return a value greater than 3 which causes certain problem with specific operating systems. Enabling "CPUID Maximum Value Limit" in the CPU configuration of BIOS setup menu will limit the returned value to 3 and less to get rid of the problem. The problem is not seen with Windows series operating systems so the default is set to disabled for it.