Intel Core i3 7100 Advantages
Integrated graphics card
Higher specification of memory (DDR4-400 vs DDR4-2666)
Lower TDP (51W vs 112W)
Intel Core i7 7740X Advantages
Larger memory bandwidth (42.7GB/s vs 35.76GB/s)
Higher base frequency (4.3GHz vs 3.9GHz)
Larger L3 cache size (8MB vs 3MB)