Dimm Population Requirements For The 81Xx/61Xx/51Xx/41Xx/31Xx Processors - Supermicro X11DPFF-SN User Manual

Super X11DPFF-SN User's Manual
DIMM Population Requirements for the 81xx/61xx/51xx/41xx/31xx
Processors
For optimal memory performance, follow the tables below when populating memory modules.
Number of DIMMs per Channel
•
Please populate all memory modules with 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
Key Parameters for DIMM Confi gurations
Parameters
Number of Channels
DIMM Type
DIMM Construction
General Population Requirements
DIMM Mixing Rules
Mixing of DIMM Types within a Channel
RDIMM
Allowed
Not Allowed
Not Allowed
Possible Values
1, 2, 3, 4, 5, or 6
1DPC (1 DIMM Per Channel) or 2DPC (2 DIMMs Per Channel)
RDIMM (w/ECC), LRDIMM, 3DS-LRDIMM
•
non-3DS RDIMM Raw Cards: A/B (2RX4), C (1RX4),
D (1RX8), E (2RX8)
•
3DS RDIMM Raw Cards: A/B (4RX4)
•
non-3DS LRDIMM Raw Cards: D/E (4RX4)
•
3DS LRDIMM Raw Cards: A/B (8RX4)
LRDIMM
Not Allowed
Allowed
Not Allowed
32
3DS LRDIMM
Not Allowed
Not Allowed
Allowed