The design & intended purpose of the motherboard can affect how many slots it has; high-performance or server-grade boards may have eight or more slots, while conrummy gamsumer-grade motherboards typically have two to four. Anyone wishing to improve or troubleshoot their computer's memory system must comprehend the function and role of DIMM slots. Concept and Setup. A dual in-line configuration, in which each side of the module has its own set of pins, is supported by the DIMM slot design.