What to do if PCIe 6 gets hot? Intel submits new driver, eases by controlling bus speed

According to news from this site on May 11, the PCIe version change has brought higher bandwidth, faster transmission speed, and also brought more heat. Intel recently released a Linux driver that uses the open source "PCIe Bandwidth Controller" to curb heat and automatically control link speeds when heat reaches a certain threshold.

Note from this site: PCIe version changes not only increase the transmission speed, but also require better signal integrity and lower signal loss, so higher clocks are often required frequency, more power, and coding optimizations, all of which generate additional heat.

Intel engineer Ilpo Järvinen wrote in the latest patch notes: "This series of patches only adds support for controlling PCIe link speed. Controlling PCIe link width may also be useful, but for now, it seems that There was no mechanism for this before PCIe 6.0 (L0p), so this series did not add link width throttling function. "

The new Linux driver only focuses on link speed throttling to alleviate thermal issues. , is relatively simple and crude. After overheating, the operating system automatically reduces the link rate of each port, providing a method to dynamically optimize heat dissipation under load.

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