IBM Power 720 Overview page 68

Table 2-6 shows the maximum memory that is supported on the Power 740.
Table 2-6 Power 740 maximum memory
Processor
cores
1 x 4-core
1 x 6-core
1 x 8-core
2 x 4-core
2 x 6-core
2 x 8-core
Figure 2-8 shows the logical memory DIMM topology for the POWER7 processor card.
POWER7+
Figure 2-8 Memory DIMM topology for the Power 720 or Power 740
54
IBM Power 720 and 740 Technical Overview and Introduction
One memory
riser card
256 GB
256 GB
MC0
BC-B
Channel D
Memory Card #2
MC0
BC-A
Channel C
SCM
MC0
BC-B
Channel B
Memory Card #1
MC0
BC-A
Channel A
MC: Memory Controller
BC: Memory Buffer
Two memory Three memory
riser cards riser cards
512 GB Not available
512 GB 768 GB
DDR3 RDIMM Slot 7
DDR3 RDIMM Slot 8
DDR3 RDIMM Slot 1
DDR3 RDIMM Slot 2
DDR3 RDIMM Slot 5
DDR3 RDIMM Slot 6
DDR3 RDIMM Slot 3
DDR3 RDIMM Slot 4
DDR3 RDIMM Slot 7
DDR3 RDIMM Slot 8
DDR3 RDIMM Slot 1
DDR3 RDIMM Slot 2
DDR3 RDIMM Slot 5
DDR3 RDIMM Slot 6
DDR3 RDIMM Slot 3
DDR3 RDIMM Slot 4
Four memory
riser cards
Not available
1024 GB