Memory Population Guidelines - Supermicro SuperStorage 5049P-E1CR45L User Manual

SuperStorageServer 5049P-E1CR45(L/H) User's Manual
DDR4 Memory Support for 82xx/62xx/52xx/42xx/32xx Processors
Ranks
Per
DIMM
Type
and
Data
Width
SRx4
SRx8
RDIMM
DRx8
DRx4
QRX4
RDIMM 3Ds
8RX4
LRDIMM QRx4
QRx4
LRDIMM 3Ds
8Rx4
* Only the 82xx and 62xx series support 2933 MT/s
Check the Supermicro website for possible updates to memory support.

Memory Population Guidelines

•
All DIMMs must be DDR4.
•
Balance memory. Using unbalanced memory topology, such as populating two DIMMs in
one channel while populating one DIMM in another channel, reduces performance. It is
not recommended for Supermicro systems.
Guidelines Regarding Mixing DIMMs
•
Populating slots with a pair of DIMM modules of the same type and size results in inter-
leaved memory, which improves memory performance.
•
Use memory modules of the same type and speed, as mixing is not allowed.
•
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 Construction
•
RDIMM (non-3DS) Raw Cards: A/B (2Rx4), C (1Rx4), D (1Rx8), E (2Rx8)
•
3DS RDIMM Raw Cards: A/B (4Rx4)
•
LRDIMM (non-3DS) Raw Cards: D/E (4Rx4)
•
3DS LRDIMM Raw Cards: A/B (8Rx4)
DIMM Capacity (GB)
DRAM Density
4 Gb 8 Gb 16 Gb
4 GB 8 GB 16 GB
8 GB 16 GB 32 GB
8 GB 16 GB 32 GB
16 GB 32 GB 64 GB
N/A 2H-64GB 2H-128GB
N/A 4H-128GB 4H-256GB
32 GB 64 GB 128 GB
N/A 2H-64GB 2H-64GB
N/A 4H-128 GB 4H-256 GB
Speed (MT/s)
One Slot
per Channel
One DIMM One DIMM
per Channel per Channel
1.2 Volts 1.2 Volts
2933* 2933*
36
Two Slots per
Channel
Two DIMMs
per Channel
1.2 Volts
2666