AMD Radeon RX 580 's Advantages
More VRAM (8GB vs 4GB)
Larger VRAM bandwidth (256.0GB/s vs 80.00GB/s)
1920 additional rendering cores
NVIDIA T400 4 GB 's Advantages
Released 4 years and 1 months late
Boost Clock has increased by 6% (1425MHz vs 1340MHz)
Lower TDP (30W vs 185W)