Memory; Memory Support; Memory Installation Sequence; General Memory Population Requirements - Supermicro SuperServer SYS-620H-TN12R User Manual

3.5 Memory

Memory Support

The X12DHM-6 has 32 DIMM slots to support up to 8TB of 3DS LRDIMM/LRDIMM/3DS
RDIMM/RDIMM DDR4 (288-pin) ECC memory with speeds of 3200/2933/2666 MHz and up
to 8TB of Intel Optane PMem 200 Series with speeds of up to 3200 MHz.
For validated memory, use our
possible updates to memory support.

Memory Installation Sequence

Memory for this motherboard is populated using the "Fill First" method. The DIMM slots
with blue release tabs are considered the first DIMM of their channel, and those with white
release tabs are the second of the channel. When installing memory modules, be sure to
populate the memory slots with the blue release tabs first and then populate those with the
white release tabs.

General Memory Population Requirements

1. Be sure to use the memory modules of the same type and speed on the motherboard.
Mixing of memory modules of different types and speeds is not allowed.
2. Using unbalanced memory topology such as populating two DIMMs in one channel while
populating one DIMM in another channel will result in the reduced memory performance.
3. Populating memory slots with a pair of DIMM modules of the same type and size will
result in interleaved memory, which will improve memory performance.
Ranks per DIMM
Type
RDIMM
RDIMM 3Ds
LRDIMM
LRDIMM 3Ds
Chapter 3: Maintenance and Component Installation
Product Resources
DDR4 Memory Support
DIMM Capacity (GB)
and
Data Width
8GB
SRx8 8GB
SRx4
16GB
DRx8 16GB
DRx4 32GB
2H-64GB
(4R/8R) x4
4H-128GB
QRx4 64GB
(4R/8R) x4 4H-128GB
page. Check the Supermicro website for
Speed (MT/s) and Voltage (V)
One DIMM
per Channel
16GB 1.2 V
16GB
32GB
32GB
3200
64GB
2H-128GB
4H-256GB
128GB 3200
2H-128GB
3200
4H-256GB
42
Two DIMMs
per Channel
1.2 V
2933*
3200
3200