AMD Radeon R9 390 X2 's Advantages
More VRAM (8GB vs 6GB)
Larger VRAM bandwidth (345.6GB/s vs 336.0GB/s)
640 additional rendering cores
NVIDIA GeForce RTX 2060 TU104 's Advantages
Released 4 years and 4 months late
Boost Clock1680MHz
Lower TDP (160W vs 580W)