Supermicro SuperServer 1029P-WTR User Manual page 34

SuperServer 1029P-WTR User's Manual
•
All DIMMs must be DDR4 DIMMs only.
•
X4 and X8 DIMMs can be mixed in the same channel.
•
Mixing of LRDIMMs and RDIMMs is not allowed in the same channel, across different channels, and across
different sockets.
•
Mixing of non-3DS and 3DS LRDIMM is not allowed in the same channel, across different channels, and across
different sockets.
DIMM Types
RDIMM
LRDIMM
3DS LRDIMM
•
There should be at least one DDR4 DIMM per socket.
•
If only one DIMM is populated in a channel, then populate it in the slot furthest away from CPU.
•
Always populate DIMMs with a higher electrical loading in DIMM0 followed by DIMM1.
DDR4 RDIMM
Within DDR0
IMC
DDR1
DIMM
Popula-
tion
DDR2
3DS LRDIMM or 3DS RDIMM
Within IMC
DIMM Popu-
lation
LRDIMMs
Within IMC
DIMM Popu-
lation
General Population Requirements
DIMM Mixing Rules
Mixing of DIMM Types within a Channel
RDIMM
Allowed
Not Allowed
Not Allowed
DDR4 Only Socket Level Population Requirements
DDR4 Socket Level Minimum Population Requirements
DDR4 Only Memory Populations with Possible Mixes
DIMM0/DIMM1 DIMM0/DIMM1
Config. Set A Config. Set B
x8, None, x8, x8 x4, None, x4, x4
None or same as None or same as
DDR0 DDR0
None or same as None or same as
DDR1 (excludes DDR1 (excludes
DIMM 1 in 5DIMM DIMM 1 in 5DIMM
configurations) configurations)
DDR4 Only Memory Populations with Possible Mixes
DIMM0/DIMM1 Config. Set A
DDR0 x4, None, x4, x4
DDR1 None or same as DDR0
DDR2
None or same as DDR1
DDR4 Only Memory Populations with Possible Mixes
DIMM0/DIMM1
DDR0 x4, None, x4, x4
DDR1 None or same as DDR0
DDR2 None or same as DDR1
34
LRDIMM 3DS LRDIMM
Not Allowed Not Allowed
Allowed Not Allowed
NotAllowed Allowed
DIMM0/DIMM1 Con- Possible Mixes
fig. Set C DIMM0/DIMM1
x8, x4, or x4, x8 Single Rank, None
Single Rank, Single Rank
None or same as
Dual Rank, Single Rank,
DDR0
Dual Rank, None
Dual Rank, Dual Rank,
None or same as
Single Rank, Single Rank
DDR1 (excludes DIMM
1 in 5DIMM configura-
tions)
Possible Mixes
DIMM0/DIMM1
Quad Rank, None
Quad Rank, Quad Rank
Cannot mix 3DS LRDIMM and RDIMM
Possible Mixes
DIMM0/DIMM1
Quad Rank, None
Quad Rank, Quad Rank
Note: Requirements
*Match DIMM types installed across DDR
channels within an IMC
*Always populate iMC0 first