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1. Motherboard

SUPPLEMENTAL MATERIAL

DIMM and CPU Layout

Each CPU controls four memory channels, as follows (refer to

Channels A, B, C, and D

■

—

The DIMM and CPU physical layout is shown in

controls.

Figure 6

DIMM and CPU Layout

Memory Population Recommendations

See

Table 5 on page

11. Note that DIMMs in slots of the same color must be 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.

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

There is only one DIMM slot (one bank) in each of the DDR channels. Therefore, all DIMM

■

pairs in a B440 M2 server must be identical.

Your selected CPU(s) can have some effect on performance. All CPUs in the server must be

■

of the same type.

Performance degradation can result from the following:

■

—

Bank 0: A0 (blue DIMM slot), C0 (white DIMM slot), B0 (yellow DIMM slot), D0 (black

DIMM slot)

Bank 1: A1 (blue DIMM slot), C1 (white DIMM slot), B1 (yellow DIMM slot), D1 (black

DIMM slot)

NOTE: DIMMs installed in slots for an absent CPU are not recognized.

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

Figure 3 on page

Figure

6. Each CPU is located to the right of the DIMMs it

10):

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