Datasheet

Cisco UCS B420 M3 Blade Server
12
CONFIGURING the SERVER
Fill banks equally across the CPU. See DIMM population guidelines in Table 23,
Table 24, and Table 25.
—Populate less than 3 DPC
Select DIMMs with the highest clock speed
for a given processor
For 3 DPC configurations:
Maximum memory speed is 1066 MHz
Memory always runs at 1.5 V regardless if the BIOS setting is low-p
o
wer mode
(1.35 V) or performance mode (1.5 V)
For more information regarding memory, see DIMM and CPU Layout on page 35.
Supported Configurations
(1) Without memory mirroring:
Select from 1 to 12 DIMMs per CPU (note that there are 12 DIMM slots per CPU). There must
be at least 1 DIMM per CPU.
(2) With memory mirroring:
Select 4 DIMMs per CPU (installed in bank 0), 8 DIMMs per CPU (installed in banks 0, 1), or 12
DIMMs per CPU (installed in banks 0, 1, 2).