Comparison of INNO3D GeForce GTX 1660 SUPER TWIN X2 video card vs AMD Radeon RX 6400 - Reference Data video card by specifications and benchmarks. INNO3D GeForce GTX 1660 SUPER TWIN X2 runs at 1.530 GHz base clock speed and has 6 GB of GDDR6 memory, while video card AMD Radeon RX 6400 - Reference Data runs at base clock speed and has 4 GB of GDDR6 memory. The TDP of the first video card is 120 W-4 %, and the second is 53 W. Compare the table of benchmark results to find out which graphic card is better.