Intel Core i5 8400H 's Advantages
Higher base frequency (2.5GHz vs 1.1GHz)
Intel Celeron 7305 's Advantages
Released 3 years and 9 months late
Higher specification of memory (LPDDR5-5200 vs DDR4-2666)
Larger memory bandwidth (76.8GB/s vs 41.8GB/s)
Newer PCIe version (4.0 vs 3.0)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (12W vs 45W)