NVIDIA Tesla P4 's Advantages
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (192.3GB/s vs 40.10GB/s)
2304 additional rendering cores
NVIDIA Quadro P500 Mobile 's Advantages
Released 1 years and 4 months late
Boost Clock has increased by 36% (1518MHz vs 1114MHz)
Lower TDP (18W vs 75W)