This 64GB (4x16GB) RAM is 100% compatible with Oracle Sun 1122GG-TF. Information regarding 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 to be achieved. 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 present. Memory slots without a processor should not be populated. When using a multiprocessor system, the memory slots should always be populated identically for each CPU. A higher memory clock speed of the memory module automatically adjusts to the clock speed set by the system. This can especially be the case with larger capacities.