Intel Core i3 8145U's Advantages
Higher base frequency (2.1GHz vs 1.6GHz)
Intel Core i3 1305U's Advantages
Released 4 years and 5 months late
Better graphics card performance
Higher specification of memory (DDR5-5200 vs DDR4-2400)
Larger memory bandwidth (76.8GB/s vs 37.5GB/s)
Newer PCIe version (4.0 vs 3.0)
Larger L3 cache size (10MB vs 4MB)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (12W vs 15W)