Dell PowerEdge R520 Technical Manual page 15

The Dell PowerEdge R520 features the Intel Xeon processor E5-2400 product family, which offers
an ideal combination of performance, power efficiency, and cost. These processors provide high
performance no matter what your constraint is—floor space, power, or budget—and on workloads
that range from the most complicated scientific exploration to crucial web-serving and
infrastructure applications. In addition to providing raw performance gains, improved I/O is also
made possible with Intel Integrated I/O, which can reduce latency by adding more lanes and
doubling bandwidth. This helps to reduce network and storage bottlenecks, unleashing the
processor's performance capabilities.
The new Intel Xeon processor E5-2400 product family provides the following features:
 2-socket processor design with power and dimensions optimized for density
Up to 8 execution cores per processor

Intel Hyper-Threading technology enables up to 16 computational threads

 Micro-architecture on 32nm process for greater performance per watt
Support for more memory—4 additional DIMMs (up to 12 DIMM slots) and support for up to

16 GB DIMMs increasing the memory capacity from 128 GB to 192 GB

Integrated memory controller with 3 channels of DDR3 and 46-bit physical addressing facilitate
greater memory capacity
 Intel Integrated I/O has support for up to 48 lanes (24 lanes per socket) of PCIe 3.0 links capable
of 8.0 GT/s
Faster connections throughout the system with support for DDR3 1600 MT/s memory and

8.0 GT/s QPI
 Intel Data Direct I/O (DDIO) allows I/O traffic to skip the main system memory and be directed
straight to the processor cache, which can provide a significant reduction in latency as well as
allowing memory to remain in a low-power state

High bandwidth, low latency, bidirectional ring interconnect allows faster access to the 20MB
multi-banked last level cache
 Intel Advanced Vector Extensions offer up to double the floating point operations per clock
cycle by doubling the length of registers, which can be useful for addressing very complex
problems or dealing with large-number calculations, which are integral to many technical,
financial, and scientific computing problems
Intel Turbo Boost Technology 2.0, which allows processor cores to run faster than the base

operating frequency if it's operating below power, current, and temperature specification limits,
delivers up to double the boost than the previous generation
Continued improvements to both Intel TXT and AES-NI help to better protect systems and data

For more information on the Intel Xeon processor E5-2400 product family, visit Intel.com.
Table 6 lists the Intel Xeon processors supported by the PowerEdge R520. For the latest information
on supported processors, visit Dell.com/PowerEdge.