Dell PowerEdge M710 Technical Guide
24
Figure 5.
Memory Slots and Risers
7.4
Speed
The memory frequency is determined by a variety of inputs:
•
Speed of the DIMMs
•
Speed supported by the CPU
•
Configuration of the DIMMs
Table 7 shows the memory populations and the maximum frequency achievable for that
configuration.
For quad-rank DIMMs mixed with single- or dual-rank DIMMs, the quad-rank DIMM needs to be in the
slot with the white ejection tabs (the first DIMM slot in each channel). There is no requirement for
the order of SR and DR DIMMs.
Table 7.
Memory Populations and Maximum Frequency
DIMM Slots
per
Channel
DIMMs
Populated per
Channel
DIMM Type
POR
Speeds
Ranks per DIMM
(any
combination)
Population Rules
2
1
Reg. DDR3
ECC
800, 1066,
1333
SR or DR
Any combination of x4
and x8 RDIMMs, with
1Gb, 2Gb, or 4Gb DRAM
density
Populate DIMMs starting
with slot 0, furthest
from the CPU
2
1
Reg. DDR3
ECC
800, 1066
QR only
2
2
Reg. DDR3
ECC
800, 1066,
1333
Mixing SR, DR
2
2
Reg. DDR3
ECC
800
Mixing SR, DR, QR
3
1
Reg. DDR3
ECC
800, 1066,
1333
SR or DR
3
1
Reg. DDR3
800, 1066
QR only
