Article ID: 000056722 Content Type: Product Information & Documentation Last Reviewed: 07/12/2021

Theoretical Maximum Memory Bandwidth for Intel® Core™ X-Series Processors

Environment

Intel® Core™ X-Series Processors

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Summary

Describes how to get the theoretical maximum memory bandwidth for Intel® Boxed Processors.

Description

What is the theoretical maximum memory bandwidth for Intel® Core™ X-Series Processors and how is it calculated?

Resolution

The maximum memory bandwidth is the maximum rate at which data can be read from or stored into a semiconductor memory by the processor (in GB/s).

The theoretical maximum memory bandwidth for Intel Core X-Series Processors can be calculated by multiplying the memory frequency (one half since double data rate x 2), multiplied by the number of the bytes of width, and multiplied by the number of the channels supported for the processor.

For example:
For DDR4 2933 the memory supported in some core-x -series is (1466.67 X 2) X 8 (# of bytes of width) X 4 (# of channels) = 93,866.88 MB/s bandwidth, or 94 GB/s.

A lower-than-expected memory bandwidth may be seen due to many system variables, such as software workloads and system power states.

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