The ARM Cortex-X4 is a high-performance CPU core from Arm, released in 2023 as part of Arm's "total compute solution". It serves as the successor of ARM Cortex-X3. From Wikipedia
Samsung’s yield struggles prompted Google to turn to TSMC’s N3E process for its next-generation Tensor G5 chip powering the Pixel 10 series through the Pixel 14 era.