AMD has engineered the X670E and X870E chipsets by combining two Promontory 21 FCH chips, resulting in a powerful platform with 12 PCIe 4.0 lanes and up to eight SATA 6 Gbps ports. Recently, a company innovatively placed one of these FCH chips on an add-on card, allowing users to upgrade their single-FCH platforms, such as B650, B850, or X870, with additional PCIe lanes and SATA ports.

PC enthusiasts in China experimented by installing this card on Intel motherboards, leading to a humorous mix-up. Utilities like AIDA64 mistook the Promontory 21 chips for the main chipset, creating the illusion of an Intel processor on an AMD chipset motherboard. This confusion highlights the flexibility and compatibility of modern hardware components, though it also underscores the potential for misidentification in system diagnostics.

The card itself boasts an impressive array of four M.2 slots and four SATA 6 Gbps ports, with at least two of the M.2 slots supporting Gen 4 x4 speeds. This setup allows for versatile storage configurations, though details on availability remain scarce. The experiment showcases the ingenuity of enthusiasts in pushing the boundaries of hardware compatibility, even if it leads to occasional software confusion.

This development offers a glimpse into the evolving landscape of PC hardware, where the lines between different manufacturers' technologies continue to blur. As both AMD and Intel push the limits of performance, such creative applications of hardware components are likely to become more common, driving innovation and user customization.