Comparison of PNY GeForce GTX 1660 6GB XLR8 Gaming OC Dual Fan video card vs AMD Radeon RX 6400 - Reference Data video card by specifications and benchmarks. PNY GeForce GTX 1660 6GB XLR8 Gaming OC Dual Fan 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 130 W+ 8 %, and the second is 53 W. Compare the table of benchmark results to find out which graphic card is better.