AMD Ryzen 7 7840HS 's Advantages
Integrated graphics card
Higher specification of memory (LPDDR5x-7500 vs LPDDR5X-7467)
Higher base frequency (3.8GHz vs 1.5GHz)
Larger L3 cache size (16MB vs 10MB)
Intel Core Ultra 5 115U 's Advantages
Released 11 months late
Larger memory bandwidth (120GB/s vs 89.6GB/s)
Newer PCIe version (4 vs 4.0)
Lower TDP (15W vs 35W)