This 32GB RAM is 100% compatible with Supermicro A+ Server 4042G-72RF4.

Information on memory configuration: The following technical specifications should be considered in advance: ECC DIMM (with Error-Correction-Code) or RDIMM (Registered DIMM) RAM can be installed in the device. RDIMM memory is recommended when large memory capacities are required. The different memory technologies (ECC / RDIMM) must not be mixed. If a memory upgrade is to be made with the existing RAM, it must be checked which memory technology (ECC / RDIMM) is currently in use. Memory slots without a processor present must not be populated. When using a multiprocessor system, the memory slots should always be populated identically for each CPU. A higher memory clock of the memory module will automatically adjust to the memory clock specified by the system. This can especially be the case with larger capacities.

Memory configuration for system performance: Optimal performance can be achieved with 4 or 8 identical memory modules per CPU. The memory should be populated identically per CPU (mirrored to the other CPU).

Supported RAM speeds of AMD CPUs:

• Opteron 61xx: DDR3 ECC / RDIMM / LRDIMM 1333 MHz
• Opteron 62xx: DDR3 ECC / RDIMM / LRDIMM 1600 MHz
• Opteron 63xx: DDR3 ECC / RDIMM / LRDIMM 1866 MHz.