AMD Radeon RX 580 Mobile 's Advantages
Released 3 years and 1 months late
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (256.0GB/s vs 16.02GB/s)
1920 additional rendering cores
NVIDIA GeForce 840M 's Advantages
Boost Clock has increased by 4% (1124MHz vs 1077MHz)
Lower TDP (33W vs 100W)