AMD Radeon RX 580 Mobile 's Advantages
Released 5 years and 1 months late
Boost Clock1077MHz
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (256.0GB/s vs 28.80GB/s)
1920 additional rendering cores
NVIDIA GeForce GT 640M 's Advantages
Lower TDP (32W vs 100W)