Comparison of XFX Radeon RX 590 Fatboy Core Edition 8GB video card vs MSI GeForce GTX 1660 TI GAMING X 6G video card by specifications and benchmarks. XFX Radeon RX 590 Fatboy Core Edition 8GB runs at 1.469 GHz base clock speed and has 8 GB of GDDR5 memory, while video card MSI GeForce GTX 1660 TI GAMING X 6G runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 225 W, and the second is 130 W+ 8 %. Compare the table of benchmark results to find out which graphic card is better.