Comparison of PowerColor Radeon RX Vega 64 video card vs ASUS Dual GeForce GTX 1660 EVO video card by specifications and benchmarks. PowerColor Radeon RX Vega 64 runs at 1.247 GHz base clock speed and has 8 GB of HBM2 memory, while video card ASUS Dual GeForce GTX 1660 EVO runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 295 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.