Intel Core i7 6820HQ 's Advantages
Newer PCIe version (3.0 vs 2.0)
Higher base frequency (2.7GHz vs 1.8GHz)
Larger L3 cache size (8MB vs 2MB)
Intel Celeron 4205U 's Advantages
Released 3 years and 4 months late
Higher specification of memory (2133 vs 2133)
Larger memory bandwidth (37.5GB/s vs 34.1GB/s)
Lower TDP (15W vs 45W)