Intel Core i7 12800HX 's Advantages
Newer PCIe version (5.0 vs 4.0)
Higher base frequency (2.0GHz vs 1.2GHz)
Larger L3 cache size (25MB vs 8MB)
Intel Processor U300 's Advantages
Released 8 months late
Higher specification of memory (DDR5-5200 vs DDR5-4800)
Lower TDP (12W vs 45W)