• Memory modules installed in memory module sockets with white release levers must be identical andthe same rule applies for sockets with black and green release tabs. This ensures that identicalmemory modules are installed in matched pairs—for example, A1 with A2, A3 with A4, A5 with A6, andso on.Table 37. Processor configurationProcessor Configuration Memory populationrules Memory populationinformationSingle CPU Memory population order {1,2}, {3,4} See Memory mirroring noteSample memory configurationsThe following tables show sample memory configurations for one and two processor configurations thatfollow the appropriate memory guidelines.NOTE: 1R, 2R, and 4R in the following tables indicate single, dual, and quad-rank DIMMsrespectively.Table 38. Memory configurations—single processorSystemcapacity(in GB)DIMMsize (inGB)Numberof DIMMs DIMM rank, organization, andfrequency DIMM slot population4 4 1 1R, x8, 2400 MT/s1R, x8, 2133 MT/sA18 4 2 1R, x8, 2400 MT/s1R, x8, 2133 MT/sA1, A216 4 4 1R, x8, 2400 MT/s1R, x8, 2133 MT/sA1, A2, A3, A48 2 1R, x8, 2400 MT/s1R, x8, 2133 MT/sA1, A224 4 6 1R, x8, 2400 MT/s1R, x8, 2133 MT/sA1, A2, A3, A4, A5, A648 4 12 1R, x8, 1866 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9,A10, A11, A128 6 1R, x8, 2400 MT/s1R, x8, 2133 MT/sA1, A2, A3, A4, A5, A696 8 12 1R, x8, 1866 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9,A10, A11, A1216 6 2R, x8, 2400 MT/s A1, A2, A3, A4, A5, A6104
