Basically you need to contact the system manufacturer so they can provide you a list of fully supported processors for your system.
Keep in mind that the compatibility between the processor and the motherboard / laptop system is determined by the motherboard / laptop system manufacturer.
PGA988A is a socket G1. PGA988B is a socket G2. These sockets are not compatible with each other.
Ok i get it! 988 A and 988B are not compatible.
But recently i put a 989 socket processor on my 988B notebook and it worked.
In other words i am looking for a list of processors compatible with 988B socket