Comparison of ASUS ROG Strix Radeon RX 580 OC video card vs MANLI GeForce GTX 1660Ti (M1432+N537-00) video card by specifications and benchmarks. ASUS ROG Strix Radeon RX 580 OC runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory, while video card MANLI GeForce GTX 1660Ti (M1432+N537-00) 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.