Dell PowerEdge R715 - Manual (Page 4)

Table 1-3. PER815 Memory Configuration (Two Processors)
System
Capacity
(in GB) Number of DIMMs DIMM Size
(in GB) DIMM Type Organization Processors
1 2
8 8 1 UDIMM x8 A1,A2,
A3,A4 B1,B2,
B3,B4
8 8 1 RDIMM x8 A1,A2,
A3,A4 B1,B2,
B3,B4
16 8 2 UDIMM x8 A1,A2,
A3,A4 B1,B2,
B3,B4
16 8 2 RDIMM x8 A1,A2,
A3,A4 B1,B2,
B3,B4
32 8 4 RDIMM x8 A1,A2,
A3,A4 B1,B2,
B3,B4
32 8 4 UDIMM x8 A1,A2,
A3,A4 B1,B2,
B3,B4
32 16 2 UDIMM x8 A1,A2,
A3,A4
A5,A6,
A7,A8
B1,B2,
B3,B4
B5,B6,
B7,B8
32 16 2 RDIMM x8 A1,A2,
A3,A4
A5,A6,
A7,A8
B1,B2,
B3,B4
B5,B6,
B7,B8
64 16 4 RDIMM x4 A1,A2,
A3,A4
A5,A6,
A7,A8
B1,B2,
B3,B4
B5,B6,
B7,B8
64 8 8 RDIMM x4 A1,A2,
A3,A4 B1,B2,
B3,B4
96 16
(DIMM 1, 8 x 4GB,
DIMM 2, 8 x 8GB)
8 and 4 RDIMM x4 or x8 A1,A2,
A3,A4
A5,A6,
A7,A8
B1,B2,
B3,B4
B5,B6,
B7,B8