X10SRL-F bad RAM slot or defective CPU?

I shutdown the server and swapped the DIMMs between slots C1 and D1, to attempt to determine if the issue is bad DIMM or a bad slot Or maybe

slot or dual in-line memory module slot How does a memory slot work? When you insert a memory module into a memory slot, the computer's motherboard

dimension a slot Compares to conventional DIP style DIMM slot, SMD type DIMM slot can reduce signal loss, improves stability under high frequency and maximize overclocking

dimm slot meaning Processor 1 has four 2 DIMM slots per channel and two 1 DIMM slot per channel, Processor 2 has six 1 DIMM per channel Memory channels are organized as