NVIDIA Tesla M40 24 GB 's Advantages
More VRAM (24GB vs 8GB)
512 additional rendering cores
NVIDIA Quadro RTX 4000 Mobile 's Advantages
Released 3 years and 6 months late
Boost Clock has increased by 40% (1560MHz vs 1112MHz)
Larger VRAM bandwidth (448.0GB/s vs 288.4GB/s)
Lower TDP (110W vs 250W)