Artesyn ATCA-7470 Installation and Use (October 2014) - Manual (Page 124)

Functional Description
ATCA-7470 Installation and Use (6806800P15K) 124
5.2 Processor
ATCA-7470 provides two Intel Xeon E5-2648L (E5-2658 for ATCA-7470-xGB-CE variants) octal-
core processors as the central processing unit (CPU). Both CPUs are based on 32 nm process
technology and provide the following main features:
 1.8 GHz core frequency
 32 KB L1 instruction cache per core
 32 KB L1 data cache per core
 256 KB L2 cache per core
 20 MB L3 cache shared among the ten cores (2.5 MB per core)
 Each CPU provides 40 PCIe lanes up to Gen3 speeds (8GT/s)
 Each CPU provides one x4 DMI/PCIe port to connect to PCH or PCIe device
 LGA2011 socket R
The processors are connected with each other through 2 Intel QuickPath Interconnect point-
to-point links capable of up to 8 GT/s, both Xeon CPUs provide an integrated 4-channel DDR3
Memory Controller (IMC).
5.3 Memory
The Xeon CPU features an integrated DDR3 memory controller. The memory controller
provides four independent memory channels that allow flexible memory configurations.
ATCA-7470 provides one DIMM slot per memory channel and thus a 1DPC (DIMM per channel
configuration). Use of 2-rank DIMM is essential in this configuration to have the best data
bandwidth throughput.
ATCA-7470 supports following DDR3 memory DIMMs:
 DDR3 RDIMM (registered) with ECC support
 Very Low Profile
 Max 2 ranks per DIMM
 Min 2 ranks per DIMM for best performance
 4, 8, 16 GByte capacity