NVIDIA Quadro K6000 's Advantages
More VRAM (12GB vs 8GB)
320 additional rendering cores
NVIDIA Quadro RTX 4000 Mobile 's Advantages
Released 5 years and 10 months late
Boost Clock has increased by 73% (1560MHz vs 902MHz)
Larger VRAM bandwidth (448.0GB/s vs 288.4GB/s)
Lower TDP (110W vs 225W)