AMD Radeon R9 390X 's Advantages
More VRAM (8GB vs 6GB)
Larger VRAM bandwidth (384.0GB/s vs 336.0GB/s)
1408 additional rendering cores
NVIDIA GeForce GTX 1660 SUPER 's Advantages
Released 4 years and 4 months late
Boost Clock1785MHz
Lower TDP (125W vs 275W)