Intel Core i3 1215U 's Advantages
Released 3 years and 1 months late
Better graphics card performance
Higher specification of memory (LPDDR5-5200 vs DDR4-2133)
Larger memory bandwidth (76.8GB/s vs 34.1GB/s)
Newer PCIe version (4.0 vs 3.0)
Larger L3 cache size (10MB vs 2MB)
More modern manufacturing process (10nm vs 14nm)
Intel Celeron 3867U 's Advantages
Higher base frequency (1.8GHz vs 1.2GHz)