Intel Core i9 9980HK 's Advantages
Lower TDP (45W vs 55W)
Intel Core Ultra 9 275HX 's Advantages
Released 5 years and 9 months late
Higher specification of memory (6400 vs 2666)
Larger memory bandwidth (102.4GB/s vs 41.8GB/s)
Newer PCIe version (5 vs 3.0)
Higher base frequency (2.7GHz vs 2.4GHz)
Larger L3 cache size (24MB vs 16MB)
More modern manufacturing process (3nm vs 14nm)