Intel Core i3 4170 's Advantages
Higher base frequency (3.7GHz vs 3.4GHz)
Larger L3 cache size (3MB vs 2MB)
Lower TDP (54W vs 58W)
Intel Celeron G5900 's Advantages
Released 5 years and 2 months late
Higher specification of memory (DDR4-2666 vs DDR3-1600)
Larger memory bandwidth (42.7GB/s vs 25.6GB/s)
More modern manufacturing process (14nm vs 22nm)