Comparison of Sapphire Radeon RX Vega 56 video card vs MSI GeForce GTX 1660 AERO ITX 6G video card by specifications and benchmarks. Sapphire Radeon RX Vega 56 runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory, while video card MSI GeForce GTX 1660 AERO ITX 6G runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 210 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.