Intel Core i5 6600 's Advantages
Integrated graphics card
Higher base frequency (3.3GHz vs 1.4GHz)
Intel Core Ultra 7 155HL 's Advantages
Released 8 years and 7 months late
Higher specification of memory (5600 vs 2133)
Larger memory bandwidth (89.6GB/s vs 34.1GB/s)
Newer PCIe version (4 vs 3.0)
Larger L3 cache size (24MB vs 6MB)
More modern manufacturing process (7nm vs 14nm)
Lower TDP (45W vs 65W)