Dell PowerEdge R820 - Manual (Page 7)

Performance Analysis of HPC Applications on Several Dell PowerEdge 12 th Generation Servers
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Intel architecture comparison Table 1.
Intel Xeon
Processor 5600
Series Intel Xeon
Processor E5-
2400 Product
Family Intel Xeon
Processor E5-
2600 Product
Family Intel Xeon
Processor E5-
4600 Product
Family
Architecture
Codename Westmere–EP Sandy Bridge-
EN Sandy Bridge-EP Sandy Bridge-EP
4S
Max Sockets / Cores
per socket 2/6 2/8 2/8 4/8
Memory channels 3 per socket 3 per socket 4 per socket 4 per socket
Max Memory speed 1333 MHz 1600 MHz 1600 MHz 1600 MHz
QPI links per CPU 2 1 2 2
Max QPI Speed 6.4 GT/s 8 GT/s 8 GT/s 8 GT/s
Max Processor TDP 130 W 95W 135W 130W
Max DIMMs Per
Channel (DPC) 3DPC 2 DPC 3 DPC 3 DPC
Dell PowerEdge
servers models R610, R710,
M610 R420, R520,
M420 R620, R720,
M620 R820, M820
Figure 2 outlines the block diagram of the Sandy Bridge-EN platform architecture. Compared to the
Sandy Bridge-EP platform, the differences lie in the number of QPI links, the number of memory
channels and the number of DIMMs per channel. The EN based processors operate at a lower maximum
wattage compared to the EP based processors. InfiniBand FDR is not supported on the EN based
processers. In its place, InfiniBand FDR10 [2] is used. The EN processor is a balanced configuration in
terms of bandwidth. The processors can support a theoretical maximum of 32 GB/s through the QPI link
between the sockets and the theoretical maximum memory bandwidth from a socket to its memory is
38.4 GB/s.