Comparison of Sapphire Pulse Radeon RX 590 8G G5 video card vs MSI GeForce GTX 1660 GAMING X 6G 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 MSI GeForce GTX 1660 GAMING X 6G runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 225 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.