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Recommended DIMM Configuration

This section explains the recommended DIMM population order rules for best performance.

All DIMMs must be DDR4 DIMMs.

■

Do not mix:

■

—

There are blue and black DIMM slots. Populate blue slots first.

■

When DIMMs ranks are mixed in the same channel, always populate the highest rank DIMM in

■

the blue DIMM slot and lower rank DIMM(s) in the black DIMM slots.

Table 8

■

Processors and

Processors. The rows highlighted in yellow indicate configurations with optimum

performance.

Table 8 Recommended Memory Configurations for 2nd Generation Intel Xeon Scalable Processors

Total

Blue Slots

System

Bank 1

Memory

Size

(A1,B1,C1,D1,

E1, F1)

192 GB

6x16 GB

384 GB

6x16 GB

384 GB

6x32 GB

576 GB

6x32 GB

768 GB

6x32 GB

768 GB

6x64 GB

768 GB

6x64 GB

1152 GB

6x64 GB

1536 GB

6x64 GB

1536 GB

6x64 GB

1536 GB

6x128 GB

2304 GB

6x128 GB

3072 GB

6x128 GB

Cisco UCS C480 M5 Memory Guide

DIMMs with different clock rates in a channel

RDIMMs and LRDIMMs or TSV-RDIMMs with any other DIMMs

shows the recommended configurations for 2nd Generation Intel Xeon Scalable

Table 9

shows the recommended configurations for Intel Xeon Scalable

CPU1

Black Slots

Blue Slots

Bank 2

(A2, B2, C2,

(G1, H1, J1,

D2, E2, F2)

K1, L1, M1)

6x16 GB

6x32 GB

6x64 GB

6x128 GB

CPU2

Black Slots

Bank 1

Bank 2

(G2, H2, J2,

K2, L2, M2)

6x16 GB

6x32 GB

6x16 GB

6x32 GB

6x64 GB

6x32 GB

6x64 GB

6x128 GB

6x64 GB

6x128 GB

Recommended DIMM Configuration

Total DIMMs in

DIMM Type

the system