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).