NVIDIA GeForce RTX 3090 's Advantages
More VRAM (24GB vs 8GB)
Larger VRAM bandwidth (936.2GB/s vs 448.0GB/s)
4608 additional rendering cores
NVIDIA GeForce RTX 3070 's Advantages
Boost Clock has increased by 2% (1725MHz vs 1695MHz)
Lower TDP (220W vs 350W)