76 IBM NeXtScale System Planning and Implementation Guide
Table 4-9 Memory population table with two processors installed: Mirrored channel mode
Table 4-10 (RDIMMs) and Table 4-11 on page 77 (UDIMMs and LRDIMMs) show
the maximum memory speeds that are achievable. The tables also show the
maximum memory capacity at any speed that is supported by the DIMM and the
maximum memory capacity at the rated DIMM speed.
Table 4-10 Maximum memory speeds (RDIMMs)
Processor 1 Processor 2
Number of
DIMMs
DIMM 1 DIMM 2 DIMM 3 DIMM 4 DIMM 5 DIMM 6 DIMM 7 DIMM 8
4 x x x x
6
x x x x x x
8
x x x x x x x x
Spec RDIMMs
Rank Single rank Dual rank
Part numbers 00D5024 (4GB)
00D5036 (8GB)
46W0735 (4 GB)
00D5044 (8 GB)
46W0672 (16GB)
00D5028 (4 GB)
00D5040 (8 GB)
00D5048 (16 GB)
Rated speed 1600 MHz 1600 MHz 1866 MHz
Rated voltage 1.35V 1.35 V 1.5 V
Operating voltage 1.35V or 1.5V 1.35V or 1.5V 1.5 V
Max quantity
a
a. The maximum quantity that is supported is shown for two installed processors. When one processor
is installed, the maximum quantity that is supported is half of that shown.
88 8
Largest DIMM 8 GB 16 GB 16 GB
Max memory capacity 64 GB 128 GB 128 GB
Max memory at rated speed 64 GB 128 GB 128 GB
Maximum operating speed (MHz)
1 DIMM per channel 1600 MHz 1600 MHz 1866 MHz
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