Intel Core i3 8145U 's Advantages
Lower TDP (15W vs 45W)
Intel Core i9 12950HX 's Advantages
Released 3 years and 9 months late
Better graphics card performance
Higher specification of memory (DDR5-4800 vs DDR4-2400)
Larger memory bandwidth (76.8GB/s vs 37.5GB/s)
Newer PCIe version (5.0 vs 3.0)
Higher base frequency (2.3GHz vs 2.1GHz)
Larger L3 cache size (30MB vs 4MB)
More modern manufacturing process (10nm vs 14nm)