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Intel QuickPath Interconnect information


The Intel QuickPath Interconnect (QPI)[1][2] is a point-to-point processor interconnect developed by Intel which replaced the front-side bus (FSB) in Xeon, Itanium, and certain desktop platforms starting in 2008. It increased the scalability and available bandwidth. Prior to the name's announcement, Intel referred to it as Common System Interface (CSI).[3] Earlier incarnations were known as Yet Another Protocol (YAP) and YAP+.

QPI 1.1 is a significantly revamped version introduced with Sandy Bridge-EP (Romley platform).[4]

QPI was replaced by Intel Ultra Path Interconnect (UPI) in Skylake-SP Xeon processors based on LGA 3647 socket.[5]

  1. ^ "An Introduction to the Intel QuickPath Interconnect" (PDF). Intel Corporation. January 30, 2009. Retrieved June 14, 2011.
  2. ^ DailyTech report Archived 2013-10-17 at the Wayback Machine, retrieved August 21, 2007
  3. ^ Eva Glass (May 16, 2007). "Intel CSI name revealed: Slow, slow, quick quick slow". The Inquirer. Archived from the original on June 10, 2012. Retrieved September 13, 2013.{{cite news}}: CS1 maint: unfit URL (link)
  4. ^ David Kanter (2011-07-20). "Intel's Quick Path Evolved". Realworldtech.com. Retrieved 2014-01-21.
  5. ^ SoftPedia: Intel Plans to Replace Xeon with Its New Skylake-Based “Purley” Super Platform

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Intel QuickPath Interconnect

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higher-performance interconnection technologies such as HyperTransport and Intel QuickPath Interconnect, while the system bus architecture continued to be used on simpler...

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came from redesigned I/O and memory systems featuring the new Intel QuickPath Interconnect and an integrated memory controller supporting up to three channels...

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serial architectures include InfiniBand, RapidIO, HyperTransport, Intel QuickPath Interconnect, the Mobile Industry Processor Interface (MIPI), and NVLink....

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Serial Peripheral Interface

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commands. This is variously called "QPI" (not to be confused with Intel QuickPath Interconnect) or "serial quad I/O" (SQI) This requires programming a configuration...

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Itanium

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correction, which helps to fix memory errors. Tukwila also implements Intel QuickPath Interconnect (QPI) to replace the Itanium bus-based architecture. It has a...

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Xeon

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eight sockets through use of the Ultra Path Interconnect (UPI) bus, which replaced the older QuickPath Interconnect (QPI) bus. The Xeon brand has been maintained...

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HyperTransport

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capable of. Elastic interface bus Fibre Channel Front-side bus Intel QuickPath Interconnect List of interface bit rates PCI Express RapidIO AGESA "API NetWorks...

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NVLink

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mobile Intel processors have the PCH integrated into the physical package as a separate die, referred to as OPI (On Package DMI interconnect Interface)...

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LGA 1248

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and adds Intel QuickPath Interconnect functionalities. List of Intel microprocessors List of Intel Itanium microprocessors CPU socket "Intel Itanium Processor...

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CSI

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interference microscopy Common System Interface, a former name of the Intel QuickPath Interconnect, a computer bus Control Sequence Introducer, a control character...

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Virtual legacy wires

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the Intel QuickPath Interconnect and Intel Ultra Path Interconnect interconnect fabrics that replace a particular set of physical legacy pins on Intel microprocessors...

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generations of Itanium use socket LGA 1248, the QuickPath Interconnect and Scalable Memory Interconnect having replaced the Front-Side Bus used by Itanium...

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X86

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by Intel based on the 8086 microprocessor and its variant, the 8088. The 8086 was introduced in 1978 as a fully 16-bit extension of 8-bit Intel's 8080...

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adopting serial attached memory." Legacy PCI Express (PCIe) NVLink Intel QuickPath Interconnect (QPI) RapidIO HyperTransport Contemporary Compute Express Link...

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LGA 1356

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