Comparison of MSI Radeon RX 580 Armor 4G OC video card vs MSI GeForce GTX 1660 TI VENTUS XS 6G OC video card by specifications and benchmarks. MSI Radeon RX 580 Armor 4G OC runs at 1.257 GHz base clock speed and has 4 GB of GDDR5 memory, while video card MSI GeForce GTX 1660 TI VENTUS XS 6G OC runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 185 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.