Processor; Processor Features; Supported Processors - Dell PowerEdge R820 Technical Manual

4 Processor

The Dell PowerEdge R820 features the Intel Xeon processor E5-4600 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.

Processor features

The new Intel Xeon processor E5-4600 product family adds the following new features:
Four-socket processor design with power and dimensions optimized for density

Up to eight 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 — up to 48 DIMM slots and support for up to 32GB DIMMs, which
increases memory capacity from 1TB to 1.5TB
Integrated memory controller with four channels of DDR3 and 46-bit physical addressing

facilitate greater memory capacity
Intel Integrated I/O has support for up to 160 lanes of PCIe 3.0, which can reduce latency

Faster connections throughout the system with support for DDR3 1600MT/s memory and

8.0GT/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 E5-4600 product family, visit Intel.com.

Supported processors

The R820 supports up to four processors with up to eight cores per processor. Table 6 lists the Intel
Xeon processors supported by the PowerEdge R820. For the latest information on supported
processors, visit Dell.com/PowerEdge.
15 PowerEdge R820 Technical Guide