QCT QuantaGrid Series, Service Manual

Page: 41 / 167

I
NSTALLING
H
ARDWARE
M
EMORY
M
ODULES
2-16
2.7 Memory Modules
General Guidelines
All servers have specific rules for population of memory on the mainboard. Refer to the
following individual server rules for information on how to populate the particular server
required.
Memory Population Support
Removing a Memory Module
1. Remove the top cover. See Removing the Top Cover on page 2-11.
WARNING!
Mainboard is supplied with all DIMM slots populated with dummy DIMMs for proper air flow.
When installing and replacing memory modules, only remove those dummy DIMMs that are
to be directly replaced. All DIMM slots must be occupied at all times by either a memory mod-
ule or dummy DIMM.
Table 1: DDR4 Registered Maximum Frequency Support (per channel)
T
YPE
R
ANKS
P
ER
DIMM
AND
D
ATA
W
IDTH
DIMM C
APACITY
(GB)
S
PEED
(MT/
S
); V
OLTAGE
(V); S
LOT
P
ER
C
HANNEL
(SPC)
AND
DIMM P
ER
C
HANNEL
(DPC)
1 S
LOT
P
ER
C
HANNEL
2 S
LOTS
P
ER
C
HANNEL
3 S
LOTS
P
ER
C
HANNEL
1DPC 1DPC 2DPC 1DPC 2DPC 3DPC
4G
B
8G
B
1.2V 1.2V 1.2V 1.2V 1.2V 1.2V
RDIMM SR x 4 8GB 16GB 2133 2133 1866 2133 1866 1600
RDIMM SR x 8 4GB 8GB 2133 2133 1866 2133 1866 1600
RDIMM DR x 8 8GB 16GB 2133 2133 1866 2133 1866 1600
RDIMM DR x 4 16GB 32GB 2133 2133 1866 2133 1866 1600
LRDIMM QR x 4 32GB 64GB 2133 2133 2133 2133 2133 1600
LRDIMM 3DS* 8R x 4 64GB 128GB 2133 2133 2133 2133 2133 1600
* Grantley intercept at platform refresh (Broadwell).
CAUTION!
H
ANDLE THE MEMORY MODULE BY THE EDGES AT ALL TIMES
.
!
!