Cisco Cisco UCS B420 M3 Blade Server Ficha De Dados

Memory is organized as three memory channels. CPU 1 has channels A, B, and C, and CPU 2 has channels D, 
E, and F. Up to 8 DIMMs can be installed per channel. 

 shows how the channels and 

banks are laid out for each CPU. 

 shows the order you must follow when adding matched pairs of DIMMs to channels.

When considering the memory configuration of your server, you should observe the following: 

■

Your selected CPU(s) can have some effect on performance. If two CPUs are used, they must 
both be of the same type.

■

Performance degradation can result from the following:

— Mixing DIMM sizes and densities within a pair is not allowed and both DIMMs in the 

pair will be logically removed from the memory array

— Unevenly populating DIMMs between CPUs

 gives the recommended memory configurations to optimize performance for the B250 M2 blade 

server. The patterns shown in the table form 3-way interleaving across three memory channels to achieve 
the highest memory bandwidth.

1. The slots inside the parentheses are electrically paired with each other, and should be populated 

with identically matched DIMMs that were ordered as a pair. Do not swap a paired DIMM with a 
DIMM that is not identical in manufacturer part number.

2

0, 1

4

(0, 1); (4, 5)

8

(0, 1); (4, 5); (2, 3); (6, 7)

48

8 GB kit x 6

1333 MHz

12

96

8 GB kit x 6

8 GB kit x 6

1333 MHz

24

192

8 GB kit x 6

8 GB kit x 6

8 GB kit x 6

8 GB kit x 6

1333 MHz

48

16 GB kit x 6

16 GB kit x 6

1333 MHz

24