AMD Radeon RX 570 X2 's Advantages
Boost Clock has increased by 23% (1206MHz vs 980MHz)
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (268.8GB/s vs 192.3GB/s)
704 additional rendering cores
NVIDIA GeForce GTX 670 's Advantages
Lower TDP (170W vs 180W)