• Memory modules must be identical in size, speed, and technology.• DIMMs installed in memory sockets with white release tabs must be identical and similar rule applies forsockets with black and green release tabs. This ensures that identical DIMMs are installed in matched pairs -for example, A1 with A2, A3 with A4, A5 with A6, and so on.Sample Memory ConfigurationsThe following tables show sample memory configurations for one and two processor configurations that follow theappropriate memory guidelines stated in this section.NOTE: 16 GB quad-rank RDIMMs are not supported.NOTE: 1R, 2R and 4R in the following tables indicate single-, dual-, and quad-rank DIMMs respectively.Table 1. Memory Configurations—Single ProcessorSystem Capacity(in GB) DIMM Size (inGB) Number ofDIMMs DIMM Rank, Organization,and Frequency DIMM Slot Population2 2 1 1R, x8, 1333 MT/s,1R, x8, 1600 MT/sA14 2 2 1R, x8, 1333 MT/s,1R, x8, 1600 MT/sA1, A38 2 4 1R, x8, 1333 MT/s,1R, x8, 1600 MT/sA1, A2, A3, A412 2 6 1R, x8, 1333 MT/s,1R, x8, 1600 MT/sA1, A2, A3, A4, A5, A616 2 8 1R, x8, 1333 MT/s A1, A2, A3, A4, A5, A6, A7, A84 4 2R, x8, 1333 MT/s,2R, x8, 1600 MT/sA1, A2, A3, A424 2 12 1R, x8, 1333 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9, A10,A11, A124 6 2R, x8, 1333 MT/s,2R, x8, 1600 MT/sA1, A2, A3, A4, A5, A648 4 12 2R, x8, 1333 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9, A10,A11, A128 6 2R, x4, 1333 MT/s,2R, x4, 1600 MT/sA1, A2, A3, A4, A5, A696 8 12 2R, x4, 1333 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9, A10,A11, A1216 6 2R, x4, 1333 MT/s,2R, x4, 1600 MT/sA1, A2, A3, A4, A5, A6128 16 8 2R, x4, 1333 MT/s,2R, x4, 1600 MT/s,A1, A2, A3, A4, A5, A6, A7, A8144 16 and 8 10 2R, x4, 1333 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9, A1144
