NVIDIA GeForce GTX 970 's Advantages
More VRAM (4GB vs 3GB)
Larger VRAM bandwidth (224.4GB/s vs 192.2GB/s)
896 additional rendering cores
NVIDIA P106 090 's Advantages
Released 2 years and 10 months late
Boost Clock has increased by 30% (1531MHz vs 1178MHz)
Lower TDP (75W vs 148W)