ARM Cortex-X1 Mega-core Evolution
Last year, ARM officially released its Cortex-A78 and Cortex-X1 architecture, the former position as a large core, the latter is a mega-core. Cortex-X series is ARM’s new high-performance core architecture, the first product is Cortex-X1, whose performance is 30% higher than the A77, 22% higher than the A78, and 100% improve machine learning capabilities.
Cortex-X1 also allows customers to customize and build more different features, but this requires customer involvement in the early development stage. Today, Xiaomi brought some detailed highlights of mega-core Cortex-X1 used in Snapdragon 888 SoC on Xiaomi 11.
Xiaomi phones have always been the first to carry the Snapdragon 8 series flagship mobile platform, and this time, Xiaomi 11 is the world’s first Snapdragon 888 flagship processor, bringing the most cutting-edge mobile technology innovation to the majority of consumers.
The most significant enhancement of Snapdragon 888 is the introduction of the ARM Cortex-X1 mega-core architecture, which is the ultimate architecture in the pure pursuit of performance. X1 is about 2.3 times larger than the A78 mega-core, and its giant size brings giant energy, and its peak performance is increased by 30% compared to the previous generation A77, which is an unprecedented performance leap and truly opens up the mega-core in the Android camp. That is an unprecedented performance jump, truly opening up the era of mega-core in the Android camp.
The increase of parking area, toll window, number of lanes, and destination unloading area/processing area greatly enhances the capacity of this whole high-speed transportation system.
Besides, Cortex-X1 has 1.5 times the BTB (branch target cache) capacity, 1.33 times the dynamic access unit, and more than 10 key module performance enhancements to ensure that the execution unit can access the required instructions and data on demand. 2.3 times the large area of Cortex-A78 is a visual demonstration of this series of comprehensive improvements to the X1 core.