Artesyn Embedded Technology ATCA-7365-CE, Installation And Use Manual, Page: 142 / 288

Functional Description
ATCA-7365-CE Installation and Use (6806800L73N )
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5.2 Processor
ATCA-7365-CE provides either two Intel Xeon E5645 six-core processors or two Intel Xeon
E5620 four-core processors as the central processing unit (CPU). Both CPUs are based on 32
nm process technology and provide the following main features:

2.4 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 (not for E5620 processor). 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-CE supports Low Voltage DDR3 (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 (1.35 V) can be used. Mixing is not possible.