Comparison of Palit GeForce GTX 1660 Dual video card vs AMD Radeon RX 6400 - Reference Data video card by specifications and benchmarks. Palit GeForce GTX 1660 Dual runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 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, and the second is 53 W. Compare the table of benchmark results to find out which graphic card is better.