Cisco Cisco UCS B440 M2 High-Performance Blade Server データシート

The standard memory features are:

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DIMMs

— Clock speed: 1600 MHz

— Ranks per DIMM: 2 (for 8 or 16 GB DIMMs), 4 (for 32 GB DIMMs), 

 

or 8 (for 64 GB DIMMs)

— Operational voltage: 1.5 V or 1.35 V

— Registered DIMM (RDIMM) or load-reduced DIMM (LRDIMM)

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Each CPU controls four serial memory interface 2 (SMI-2) channels. Memory buffers convert 
each SMI-2 channel into two DDR3 subchannels. Memory is organized as 3 DIMMs per 
subchannel, totaling 6 DIMMs per SMI-2 channel. See 

NOTE:  You cannot mix RDIMMs with LRDIMMs

NOTE:  Memory mirroring is supported and settable using the UCSM Service Profile 
“Memory RAS Configuration” setting.