Comparison of Sapphire Nitro+ Radeon RX Vega 56 video card vs GALAX GeForce GTX 1660 EX (1-Click OC) video card by specifications and benchmarks. Sapphire Nitro+ Radeon RX Vega 56 runs at 1.266 GHz+ 10 % base clock speed and has 8 GB of HBM2 memory, while video card GALAX GeForce GTX 1660 EX (1-Click OC) runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 325 W+ 55 %, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.