CPU 2 Installed SlotsCPU 1 Installed SlotsDIMMs Per CPU
E1, F1A1, B12
E1, F1, G1A1, B1, C13
E1, F1, G1, H1A1, B1, C1, D14
E1, F1, G1, H1, E2, F2, G2, H2A1, B1, C1, D1, A2, B2, C2, D28
E1, F1, G1, H1, E2, F2, G2, H2,
E3, F3, G3, H3
A1, B1, C1, D1, A2, B2, C2, D2,
A3, B3, C3, D3
12
System performance is optimized when the DIMM type and quantity are equal for both CPUs, and when each
populated channel is filled equally across the CPUs in the server.
Note
Table 2: Supported DIMM Population Order (Mirroring)
CPU 2 Installed SlotsCPU 1 Installed SlotsDIMMs per CPU
E1, F1A1, B12
E1, F1, G1, H1A1, B1, C1, D14
E1, F1, G1, H1, E2, F2, G2, H2A1, B1, C1, D1, A2, B2, C2, D28
E1, F1, E2, F2A1, B1, C1, D1, A2, B2, C2, D28 (CPU1)
and 4 (CPU2)
Not recommended for performance
reasons.
E1, F1, G1, H1, E2, F2, G2, H2,
E3, F3, G3, H3
A1, B1, C1, D1, A2, B2, C2, D2,
A3, B3, C3, D3
12
Memory Performance
When considering the memory configuration of the blade server, there are several things to consider. For
example:
• When mixing DIMMs of different densities (capacities), the highest density DIMM goes in slot 1 then
in descending density.
• Besides DIMM population and choice, the selected CPU(s) can have some effect on performance.
• DIMMs can be run in a 1DPC, a 2DPC, or a 3DPC configuration. 1DPC and 2DPC can provide the
maximum rated speed that the CPU and DIMMs are rated for. 3DPC causes the DIMMs to run at a slower
speed.
Servicing a Blade Server
16
Servicing a Blade Server
Memory Performance