NVIDIA GeForce GTX 1080 's Advantages
Boost Clock has increased by 22% (1733MHz vs 1425MHz)
More VRAM (8GB vs 4GB)
Larger VRAM bandwidth (320.3GB/s vs 80.00GB/s)
2176 additional rendering cores
NVIDIA T400 4 GB 's Advantages
Released 5 years late
Lower TDP (30W vs 180W)