NVIDIA GeForce GTX 970 's Advantages
Lower TDP (148W vs 150W)
NVIDIA GeForce GTX 1070 GDDR5X 's Advantages
Released 4 years and 3 months late
Boost Clock has increased by 43% (1683MHz vs 1178MHz)
More VRAM (8GB vs 4GB)
Larger VRAM bandwidth (256.3GB/s vs 224.4GB/s)
256 additional rendering cores