NVIDIA GeForce GT 745A 's Advantages
Lower TDP (33W vs 100W)
AMD Radeon RX 580 Mobile 's Advantages
Released 3 years and 8 months late
Boost Clock has increased by 18% (1077MHz vs 915MHz)
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (256.0GB/s vs 28.80GB/s)
1920 additional rendering cores