Comparison of ASUS ROG Strix Radeon RX Vega 64 Gaming video card vs ZOTAC GAMING GeForce GTX 1660 Twin Fan video card by specifications and benchmarks. ASUS ROG Strix Radeon RX Vega 64 Gaming runs at 1.247 GHz base clock speed and has 8 GB of HBM2 memory, while video card ZOTAC GAMING GeForce GTX 1660 Twin Fan 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.