NVIDIA GeForce RTX 3070 's Advantages
Boost Clock has increased by 21% (1725MHz vs 1425MHz)
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (448.0GB/s vs 80.00GB/s)
5504 additional rendering cores
NVIDIA T400 's Advantages
Released 8 months late
Lower TDP (30W vs 220W)