Intel Core i7 6500U 's Advantages
Higher base frequency (2.5GHz vs 2.3GHz)
Lower TDP (15W vs 28W)
Intel Core i5 8259U 's Advantages
Released 2 years and 7 months late
Higher specification of memory (2400 vs 2133)
Larger memory bandwidth (37.5GB/s vs 34.1GB/s)
Larger L3 cache size (6MB vs 4MB)