Comparison of PowerColor Red Devil Radeon RX 6900 XT Ultimate video card vs PNY GeForce RTX 3090 24GB XLR8 Gaming UPRISING EPIC-X RGB video card by specifications and benchmarks. PowerColor Red Devil Radeon RX 6900 XT Ultimate runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory, while video card PNY GeForce RTX 3090 24GB XLR8 Gaming UPRISING EPIC-X RGB runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 300 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.