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Chapter 3: Maintenance and Component Installation
DDR4 Only 2SPC Memory Configuration with x8/x4 DIMMs Mixed
DDR4 RDIMM
Total # of DIMMs
DDR Channel
ADDC/SDDC
Features
DIMM Popula-
tion within an
IMC
1 pair of x8, x4
DDR0: Populate with 1 DIMM
DDR1: Populate the second DIMM (for best perfor-
mance)
No
2 pairs of x8, x4
Populate with 1 pair of DIMMs on DDR0,
and identical pair on DDR1
No
3 pairs of x8, x4
A pair of DIMMs on DDR0, and identical pair on
DDR1, and DDR2
No
DIMM Installation
1. Insert DIMM modules in the following order: For CPU1, begin with P1-DIMMC1, P1-
DIMMB1, P1-DIMMA1 then P1-DIMMF1, P1-DIMME1, P1-DIMMD1. For CPU2, begin
with P2-DIMMC1, P2-DIMMB1, P2-DIMMA1 then P2-DIMMF1, P2-DIMME1, P2-
DIMMD1. For the system to work properly, please use memory modules of the same
type and speed on the motherboard.
2. Push the release tabs outwards on both ends of the DIMM slot to unlock it.
3. Align the key of the DIMM module with the receptive point on the memory slot.
4. Align the notches on both ends of the module against the receptive points on the ends
of the slot.
5. Use two thumbs together to press the notches on both ends of the module straight down
into the slot until the module snaps into place.
6. Press the release tabs to the lock positions to secure the DIMM module into the slot.
DIMM Removal
Reverse the steps above to remove the DIMM modules from the motherboard.
Release Tabs
Notches
Press both notches
straight down into
the memory slot.
Figure 3-6. Installing DIMMs
