Intel Core 5 220U 's Advantages
Higher specification of memory (5200 vs 3733)
Larger memory bandwidth (83.2GB/s vs 51.2GB/s)
Newer PCIe version (4 vs 3.0)
Larger L3 cache size (12MB vs 4MB)
Intel Celeron 6305 's Advantages
Released 119 years and 8 months late
Integrated graphics card
Higher base frequency (1.8GHz vs 1.5GHz)