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The Intel QuickPath Interconnect (QPI) [1] [2] is a scalable 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 ...
The Intel X58 (codenamed Tylersburg) is an Intel chip designed to connect Intel processors with Intel QuickPath Interconnect (QPI) interface to peripheral devices. Supported processors implement the Nehalem microarchitecture and therefore have an integrated memory controller (IMC), so the X58 does not have a memory interface.
The Intel Ultra Path Interconnect (UPI) [1] [2] is a scalable processor interconnect developed by Intel which replaced the Intel QuickPath Interconnect (QPI) in Xeon Skylake-SP platforms starting in 2017.
More modern designs use point-to-point and serial connections like AMD's HyperTransport and Intel's DMI 2.0 or QuickPath Interconnect (QPI). These implementations remove the traditional northbridge in favor of a direct link from the CPU to the system memory, high-speed peripherals, and the Platform Controller Hub, southbridge or I/O controller.
The QPI bandwidth is 96 GB/s for cache coherency and 24 GB/s for I/O. Model number Clock speed Cache QuickPath Cores Threads per core ... Intel had committed to at ...
Intel, meanwhile, showcased its Core Ultra 200V line for enterprise computer systems and gaming-focused chips for consumer PCs. Qualcomm, for its part, ...
AnandTech tested the Intel QuickPath Interconnect (4.8 GT/s version) and found the copy bandwidth using triple-channel 1,066 MHz DDR3 was 12.0 GB/s. A 3.0 GHz Core 2 Quad system using dual-channel 1066 MHz DDR3 achieved 6.9 GB/s. [15] Maximum PC has discovered that Intel has unlocked the QPI clock and memory multipliers on retail 920s and 940s.
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