Artesyn ATCA-7365 Installation and Use (November 2014) - Manual (Page 154)

Functional Description
ATCA-7365 Installation and Use (6806800K65N) 154
5.2 Processor
ATCA-7365 provides two Intel Xeon L5638 six-core processors as the Central Processing Unit
(CPU). Both the CPUs are based on 32 nm process technology and provide the following main
features:
 2.0 GHz core frequency
 32 KB instruction cache per core
 32 KB L1 data cache per core
 256 KB mid level cache per core
 12 MB L3 cache shared among the six cores
The processor features two Intel QuickPath Interconnect point-to-point links capable of up to
5.86 GT/s, 12 MB of shared Last Level cache (L3), and an Integrated Memory Controller (IMC).
The processor supports all the existing Streaming SIMD Extensions 2 (SSE2), Streaming SIMD
Extensions 3 (SSE3) and Streaming SIMD Extensions 4 (SSE4). The processor supports several
Advanced Technologies: Execute Disable Bit, Intel 64 Technology, Enhanced Intel SpeedStep
Technology, Intel Virtualization Technology (Intel VT), and Simultaneous Multi Threading
(SMT).
5.3 Memory
The Xeon CPU features an integrated memory controller. The memory controller provides
three memory channels that allow flexible memory configurations. DDR3 DIMM technology is
exclusively supported. Different types of memory modules can be installed including
registered DIMMs with ECC and un-buffered DIMMs with either ECC or non-ECC. The DIMM
speeds can be either DDR3-800, DDR3-1066 or DDR3-1333. DIMMs of different speed
selections can coexist but the lowest speed selection will determine the used speed for all
memory channels.
All processor variants support all the three memory clock speeds.
ATCA-7365 supports Low voltage LVDDR3 Memory running at 1.35 V which reduces power
consumption and improves thermal performance of the blade.
Either the normal DDR3 (1.5 V) or the LVDDR3 (1.35V) can be used. Mixing is not possible.