Intel Core i3 6100 's Advantages
Higher base frequency (3.7GHz vs 3.1GHz)
Larger L3 cache size (3MB vs 2MB)
Lower TDP (51W vs 54W)
Intel Celeron G4900 's Advantages
Released 2 years and 7 months late
Higher specification of memory (DDR4-2400 vs DDR4-2133)
Larger memory bandwidth (37.5GB/s vs 34.1GB/s)