https://blazetrends.com/your-motherboard-is-silently-throttling-your-pcie-expansion-cards-how-to-check-your-bios-settings/?fsp_sid=33663

Your motherboard is silently throttling your PCIe expansion cards: How to check your BIOS settings
You buy a premium graphics card or high-speed storage drive, plug it into the biggest physical connection on your system board, and assume you are getting maximum performance. According to a new hardware guide by XDA Developers, many PC motherboards are silently throttling these PCIe expansion cards through hidden BIOS settings and physical wiring limitations.






