Intel Core i5 8259U 's Advantages
Higher base frequency (2.3GHz vs 1.2GHz)
Intel Core i3 1315U 's Advantages
Released 4 years and 9 months late
Better graphics card performance
Higher specification of memory (LPDDR5x-6400 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 6MB)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (15W vs 28W)