Dell PowerEdge R510 Hardware Owner's Manual page 117

Table 3-1 and Table 3-2 show sample memory configurations that follow the
appropriate memory guidelines stated in this section. The samples show
identical memory-module configurations and their the physical and available
memory totals. The tables do not show mixed or quad-rank memory-module
configurations, nor do they address the memory speed considerations of any
configuration.
NOTE:
8-GB DIMMS are only supported on systems with hot-swappable
hard drives.
Table 3-1. Sample RDIMM Single- and Dual-Rank Memory Configurations
(Per Processor)
Memory
Memory Module
Mode Size
Optimizer 1-GB
2-GB
4-GB
8-GB
16-GB
Memory
Sockets
4 1 2 3 Physical
Memory
(GB)
X
X X
X X X
X X X X
X
X X
X X X
X X X X
X
X X
X X X
X X X X
X
X X
X X X
X X X X
X
X X
X X X
X X X X
Single Processor
Available
Memory
(GB)
1 all
2
3
4
2 all
4
6
8
4 all
8
12
16
8 all
16
24
32
16 all
32
48
64
Installing System Components
Dual Processor
Physical Available
Memory Memory
(GB) (GB)
2 all
4
6
8
4 all
8
12
16
8 all
16
24
32
16 all
32
48
64
32 all
64
96
128
117