Comparison of Sapphire Pulse Radeon RX 590 8G G5 video card vs ZOTAC GeForce GTX 1080 Ti AMP Edition video card by specifications and benchmarks. Sapphire Pulse Radeon RX 590 8G G5 runs at 1.469 GHz base clock speed and has 8 GB of GDDR5 memory, while video card ZOTAC GeForce GTX 1080 Ti AMP Edition runs at 1.569 GHz+ 6 % base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 225 W, and the second is 270 W+ 8 %. Compare the table of benchmark results to find out which graphic card is better.