Intel Core i3 1315U's Advantages
Released 11 months late
Higher specification of memory (LPDDR5x-6400 vs LPDDR5-5200)
Lower TDP (15W vs 20W)
Intel Core i3 1220P's Advantages
Higher base frequency (1.5GHz vs 1.2GHz)
Larger L3 cache size (12MB vs 10MB)