NVIDIA Quadro K5100M 's Advantages
More VRAM (8GB vs 6GB)
256 additional rendering cores
NVIDIA Quadro P3000 Mobile 's Advantages
Released 3 years and 6 months late
Boost Clock has increased by 58% (1215MHz vs 771MHz)
Larger VRAM bandwidth (168.3GB/s vs 115.2GB/s)
Lower TDP (75W vs 100W)