Intel Core i5 7640X 's Advantages
Higher specification of memory (2666 vs 2400)
Larger memory bandwidth (42.7GB/s vs 38.4GB/s)
Newer PCIe version (3.0 vs 2.0)
Higher base frequency (4.0GHz vs 2.0GHz)
Intel Celeron J4025 's Advantages
Released 2 years and 6 months late
Integrated graphics card
Lower TDP (10W vs 112W)