Intel Celeron J4005 's Advantages
Lower TDP (10W vs 95W)
Intel Core i9 9900K 's Advantages
Released 10 months late
Better graphics card performance
Higher specification of memory (2666 vs 2400)
Larger memory bandwidth (41.6GB/s vs 35.76GB/s)
Newer PCIe version (3.0 vs 2.0)
Higher base frequency (3.6GHz vs 2.0GHz)