AMD Radeon RX Vega 56 's Advantages
More VRAM (8GB vs 6GB)
Larger VRAM bandwidth (409.6GB/s vs 192.1GB/s)
2176 additional rendering cores
NVIDIA GeForce GTX 1660 's Advantages
Released 1 years and 7 months late
Boost Clock has increased by 21% (1785MHz vs 1471MHz)
Lower TDP (120W vs 210W)