Get the latest tech news
Impact of PCIe 5.0 Bandwidth on GPU Content Creation and LLM Performance
Installing add-in cards—like capture cards—can limit PCIe bandwidth to the GPU. Does the reduction of PCIe bandwidth harm performance in content-creation?
Instead of maximizing add-in card support, they are typically dedicating many of the available PCIe lanes (from the CPU or chipset) to additional features like M.2 slots, USB ports, and Ethernet/WiFi. Given that add-in cards (GPUs or otherwise) may need to run at lower-than-maximum bandwidth due to PCIe lane availability concerns, it is reasonable to ask what the cost is. We recommend caution when configuring a system for video editing applications with multiple add-in cards, as reducing the number of lanes available to the GPU can have a measurable impact on performance.
Or read this on Hacker News