NVIDIA GeForce RTX 2080 's Advantages
Boost Clock has increased by 20% (1710MHz vs 1425MHz)
More VRAM (8GB vs 4GB)
Larger VRAM bandwidth (448.0GB/s vs 80.00GB/s)
2560 additional rendering cores
NVIDIA T400 4 GB 's Advantages
Released 2 years and 8 months late
Lower TDP (30W vs 215W)