Guidelines - H3C UniServer R4900 G6 Ultra Manual

Table 30 DIMM rank classification label description
Callout
1
2
3
4
5
6

Guidelines

Only DDR5 DIMMs are supported.
IMPORTANT:
If liquid cooled modules are installed, you must install two processors.
The server provides eight DIMM channels per processor and each channel has two DIMM slots. If
the server has one processor, the total number of DIMM slots is 16. If the server has two processors,
the total number of DIMM slots is 32.
When you install a DIMM, use
Table 31 DIMM and processor compatibility
Processor
Sapphire Rapids
DIMM and processor compatibility
To obtain the memory frequency and maximum memory frequency supported by a specific
processor,
Description
Capacity
Number of ranks
Data width
DIMM generation
Data rate
DIMM type
Table 31
Memory type @ frequency
DDR5 @4800MHz
use the component
Remarks
Options include:
8GB.
•
16GB.
•
32GB.
•
64GB.
•
Options include:
1R— One rank (Single-Rank).
•
2R—Two ranks (Dual-Rank). A 2R DIMM is equivalent
•
to two 1R DIMMs.
4R—Four ranks (Quad-Rank). A 4R DIMM is
•
equivalent to two 2R DIMMs
8R—Eight ranks (8-Rank). An 8R DIMM is equivalent
•
to two 4R DIMMs.
Options include:
• ×4—4 bits.
×8—8 bits.
•
DDR5
2666V—2666 MHz.
•
2933Y—2933 MHz.
•
• 3200AA—3200 MHz.
4800—4800 MHz.
•
Options include:
L—LRDIMM.
•
R—RDIMM.
•
to verify that it is compatible with the processors.
compatibility
1
Max memory size
processor
6 TB
lookup
per
tool at