The new chip introduces a new premium tier above the current Snapdragon 850 SoC for Windows laptops and wants to compete against the 15 Watt U-Series from Intel but at only 7 Watt TDP and passive cooling.
https://www.notebookcheck.net/Qualcomm-announces-new-Snapdragon-8cx-Compute-Platform-for-Windows-PCs.374821.0.html