Article ID: 000026957 Content Type: Product Information & Documentation Last Reviewed: 08/31/2021

What Are FSB, Intel® QPI, and Intel® UPI?

Environment

Hardware/Software used: 7th Generation Intel® Core™ i7 Processors (Intel® CPUs in general)

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Summary

Information about FSB, Intel® QPI and Intel® UPI

Description

What are FSB, QPI, and UPI?
 

Resolution

FSB stands for Front Side Bus. It is an old subsystem transfer.

Intel® QPI stands for Quick Path Interconnect. It is the system we use now, when it is reporting a value of "0". This means that the processor has another bus subsystem transfer technology, such as Intel® Ultra Path Interconnect (Intel® UPI).

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