Comparison of Biostar Radeon RX Vega 56 8G video card vs GALAX GeForce GTX 1660 SUPER Prodigy video card by specifications and benchmarks. Biostar Radeon RX Vega 56 8G runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory, while video card GALAX GeForce GTX 1660 SUPER Prodigy runs at 1.530 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 210 W, and the second is 125 W. Compare the table of benchmark results to find out which graphic card is better.