Intel Pentium Gold 5405U 's Advantages
Lower TDP (15W vs 28W)
Intel Core i5 8279U 's Advantages
Better graphics card performance
Higher specification of memory (DDR4-2400 vs DDR4-2133)
Newer PCIe version (3.0 vs 2.0)
Higher base frequency (2.4GHz vs 2.3GHz)
Larger L3 cache size (6MB vs 2MB)