Cisco UCS C240 M3 High-Density Rack Server (Large Form Factor Hard Disk Drive Model)
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CONFIGURING the SERVER
STEP 3 SELECT MEMORY
The standard memory features are:
■ DIMMs
— Clock speed: 1333 or 1600 MHz
— Ranks per DIMM: 1 or 2
— Operational voltage: dual voltage capable (1.5 V or 1.35 V)
— Registered ECC DDR3 DIMMS (RDIMMS) and unregistered DIMMs (UDIMMs)
■ Memory is organized with four memory channels per CPU, with up to three DIMMs per 
channel, as shown in 
Figure 3.
Figure 3   C240 M3 LFF Memory Organization