AMD Ryzen 7 PRO 8840HS 's Advantages
Released 4 years and 3 months late
Higher specification of memory (DDR5-5600 vs DDR4-2400)
Newer PCIe version (4 vs 3.0)
Higher base frequency (3.3GHz vs 2.1GHz)
Larger L3 cache size (16MB vs 4MB)
More modern manufacturing process (4nm vs 12nm)
AMD Ryzen 5 3450U 's Advantages
Integrated graphics card
Lower TDP (12W vs 28W)