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Intel processor numbers are not a measure of performance. Processor numbers differentiate features within each

processor family, not across different processor families. See www.intel.com/products/processor_number for details.

†

Hyper-Threading Technology requires a computer system with a processor supporting Hyper-Threading Technology

and an HT Technology enabled chipset, BIOS and operating system. Performance will vary depending on the

specic hardware and software you use. See www.intel.com/info/hyperthreading/ for more information including

details on which processors support HT Technology.

◊

Intel

Virtualization Technology requires a computer system with an enabled Intel

processor, BIOS, virtual machine

monitor (VMM) and, for some uses, certain platform software enabled for it. Functionality, performance or other

benets will vary depending on hardware and software congurations and may require a BIOS update. Software

applications may not be compatible with all operating systems. Please check with your application vendor.

64-bit computing on Intel architecture requires a computer system with a processor, chipset, BIOS, operating

system, device drivers and applications enabled for Intel

64 architecture. Processors will not operate (including

32-bit operation) without an Intel 64 architecture-enabled BIOS. Performance will vary depending on your hardware

and software congurations. Consult with your system vendor for more information.

Source: IDC Document: Virtualization and Multicore Innovations Disrupt the Worldwide Server Market. Document

number: 206035. Publish date: March 2007.

Source: Intel. March 2009. Compares replacing nine four-year-old single-core Intel

Xeon

processor 3.8GHz with

2M cache-based servers with one new Intel Xeon processor X5570-based server. Results have been estimated

based on internal Intel analysis and are provided for information purposes only.

Source: Intel estimates as of Nov 2008. Performance comparison using SPECjbb2005 bops (business operations

per second). Results have been estimated based on internal Intel analysis and are provided for informational

purposes only.

Intel internal measurements of 221W at idle with Supermicro 2xE5450 (3.0GHz 80W) processors, 8x2GB 667MHz

FBDIMMs, 1x700W PSU, 1x320GB SATA hard drive vs. 111W at idle with Supermicro software development

platform with 2xE5540 (2.53GHz Nehalem 80W) processors, 6x2GB DDR3-1066 RDIMMs, 1x800W PSU, 1x150GB

10k SATA hard drive. Both systems were running Windows 2008 with USB suspend select enabled and maximum

power savings mode for PCIe link state power management. Measurements as of Feb 2009.

Intel internal measurement. (Feb 2009) Stream-Triad benchmark. Red Hat Enterprise Linux Server 5.3. Intel

Xeon

processor E5472, 3.0 GHz, 2x6MB L2 cache, 1600MHz system bus, 16GB memory (8x2GB FB DDR2-800) vs

Intel

Xeon

processor X5570, 2.93 GHz, 8MB L3 cache, 6.4QPI, 24GB memory (6x4GB DDR3-1333).

Intel

Turbo Boost Technology requires a Platform with a processor with Intel Turbo Boost Technology capability.

Intel Turbo Boost Technology performance varies depending on hardware, software and overall system conguration.

Check with your platform manufacturer on whether your system delivers Intel Turbo Boost Technology. For more

information, see www.intel.com/technology/turboboost.

Source: Infoworld, March 26, 2008.

Xeon

5300 series data based on Xeon

X5365 SKU (B-3 stepping), Xeon

5400 series based on Xeon

X5470

(E-0 stepping), and Xeon

5500 based on Xeon

W5580 (D-0 stepping). Number of operating states includes all

frequency operating points, including Turbo Boost and base frequency. Idle power based on C6 idle power for

Xeon

5500, and C1E for Xeon

5300 and 5400 SKUs. C6 also requires OS support and may vary by SKU. Faster

transitions based on Package C1E exit transition latency and PLL lock time for p-state transitions.

Intel internal measurements of 221W at idle with Supermicro 2xE5450 (3.0GHz 80W) processors, 8x2GB 667MHz

FBDIMMs, 1x700W PSU, 1x320GB SATA hard drive vs. 111W at idle with Supermicro software development

platform with 2xE5540 (2.53GHz Nehalem 80W) processors, 6x2GB DDR3-1066 RDIMMs, 1x800W PSU, 1x150GB

10k SATA hard drive. Both systems were running Windows 2008 with USB suspend select enabled and maximum

power savings mode for PCIe link state power management. Measurements as of Feb 2009.

Compared to Xeon 5400 series. Claim supported by multiple performance results including an OLTP database

benchmark and a bandwidth intensive scientic computing benchmark (SPECfp_rate_base2006). Intel internal

measurement (Feb 2009).

Intel internal measurements of 221W at idle with Supermicro 2xE5450 (3.0GHz 80W) processors, 8x2GB 667MHz

FBDIMMs, 1x700W PSU, 1x320GB SATA hard drive vs. 111W at idle with Supermicro software development

platform with 2xE5540 (2.53GHz Nehalem 80W) processors, 6x2GB DDR3-1066 RDIMMs, 1x800W PSU, 1x150GB

10k SATA hard drive. Both systems were running Windows 2008 with USB suspend select enabled and maximum

power savings mode for PCIe link state power management. Measurements as of Feb 2009.

Performance results on VMmark benchmark. Xeon X5470 data based on published results. Xeon X5570 Intel

internal measurement. (Feb 2009): HP Proliant ML370 G5 server platform with Intel Xeon processors X5470

3.33GHz, 2x6MB L2 cache, 1333MHz FSB, 48GB memory, VMware ESX V3.5.0 Update 3 Published at 9.15@ 7

tiles vs Intel

Xeon

processor X5570, 2.93 GHz, 8MB L3 cache, 6.4QPI, 72GB memory (18x4GB DDR3-800),

VMware ESX Build 140815. Performance measured at 19.51@ 13 tiles.

Source: Intel internal measurements. Intel Xeon processor 5500 series (Nehalem) vs. Intel

Xeon

processor 5400 series.

Compared to 5400 series claim supported by multiple performance results including an OLTP database benchmark

and a bandwidth intensive scientic computing benchmark (SPECfp_rate_base2006). Intel internal measurement

(Feb 2009).