Intel Core i7 8700K Advantages
Higher specification of memory (2666 vs 2400)
Larger memory bandwidth (41.6GB/s vs 29.9GB/s)
Newer PCIe version (3.0 vs 2.0)
Higher base frequency (3.7GHz vs 1.5GHz)
Intel Celeron J3455E Advantages
Released 1 years and 9 months late
Lower TDP (10W vs 95W)