Comparison of XFX Radeon RX 590 Fatboy 8GB video card vs ZOTAC GeForce GTX 1080 IceStorm 2X video card by specifications and benchmarks. XFX Radeon RX 590 Fatboy 8GB runs at 1.469 GHz base clock speed and has 8 GB of GDDR5 memory, while video card ZOTAC GeForce GTX 1080 IceStorm 2X runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory. The TDP of the first video card is 225 W, and the second is 230 W+ 28 %. Compare the table of benchmark results to find out which graphic card is better.