Comparison of Sapphire Pulse Radeon RX 580 8G G5 OC Lite video card vs MSI GeForce GTX 1660 GAMING 6G video card by specifications and benchmarks. Sapphire Pulse Radeon RX 580 8G G5 OC Lite runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory, while video card MSI GeForce GTX 1660 GAMING 6G runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 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.