What technology replaced the 64-bit Front Side Bus and has 16 lanes for data packets?

The technology that replaced the 64-bit Front Side Bus (FSB) is Intel's QuickPath Interconnect (QPI). QPI utilizes a point-to-point connection and supports multiple data lanes, with configurations typically offering 16 lanes for high-speed data transfer. This allows for improved bandwidth and reduced latency compared to the traditional FSB architecture. QPI is primarily used in Intel's multi-core processors, enhancing communication between the CPU and other components.