Upgrading Your Server 9-29
Memory Clock
The DR3-800/1066/1333MHz memory clock frequencies are supported, but this depends on the
CPU and memory configurations.
Note that all bus memory clocks operate at the same clock frequency.
Memory drive voltage: Low (1.35V/power-saving mode)
Memory drive voltage: Normal (1.5V)
<Example>
CPU1 CPU2
CPU2_DIMM3
CPU1_DIMM1
16GB 4GB
4GB
16GB
4GB 2GB
2GB 4GB
4GB 1GB 1GB 4GB
CPU1_DIMM4
CPU1_DIMM2
CPU1_DIMM5
CPU1_DIMM3
CPU1_DIMM6
CPU2_DIMM4
CPU2_DIMM1
CPU2_DIMM5
CPU2_DIMM2
CPU2_DIMM6
If the onboard CPU is Xeon E5620
Operates at 800MHz
Operates at 1066MHz
Is the onboard CPU Xeon
Has an additional 16GB
memory stick been installed?
Is the onboard CPU XEON
L5640/X5670/X5680?
N
N
Automatically shifts
t
1.
V
r
ti
n
2
Operates on an 1333MHz memory
clock
Y
Y
Y
Operates on a 1066MHz
memory clock
Operates on an 800MHz
memory clock
How many DIMMs have been
installed
er memor
channel?
N
1
Is the onboard CPU Xeon
Has an additional 16GB
memory stick been installed?
Is the onboard CPU XEON
L5640/X5670/X5680?
N
N
2
Operates on an 1333MHz memory
clock
Y
Y
Y
Operates on a 1066MHz
memory clock
Operates on an 800MHz
memory clock
How many DIMMs have been
installed
er memor
channel?
N
1
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