Comparison of ASUS ROG Strix Radeon RX Vega 56 OC Gaming video card vs GIGABYTE GeForce GTX 1660 OC 6G video card by specifications and benchmarks. ASUS ROG Strix Radeon RX Vega 56 OC Gaming runs at 1.297 GHz+ 12 % base clock speed and has 8 GB of HBM2 memory, while video card GIGABYTE GeForce GTX 1660 OC 6G runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 300 W+ 43 %, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.