Comparison of PowerColor Liquid Devil Radeon RX 6900 XT Ultimate video card vs ZOTAC GeForce GTX 1070 Founders Edition video card by specifications and benchmarks. PowerColor Liquid Devil Radeon RX 6900 XT Ultimate runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory, while video card ZOTAC GeForce GTX 1070 Founders Edition runs at 1.506 GHz base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 300 W, and the second is 150 W. Compare the table of benchmark results to find out which graphic card is better.