Comparison of AMD Radeon RX 6900 XT video card vs NVIDIA GeForce RTX 3070 Ti Founders Edition video card by specifications and benchmarks. AMD Radeon RX 6900 XT runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory, while video card NVIDIA GeForce RTX 3070 Ti Founders Edition runs at 1.580 GHz base clock speed and has 8 GB of GDDR6X memory. The TDP of the first video card is 300 W, and the second is 290 W. Compare the table of benchmark results to find out which graphic card is better.