Comparison of MSI Radeon RX 580 Mech 2 8G OC video card vs PNY GeForce GTX 1660 SUPER 6GB XLR8 Gaming OC Dual Fan video card by specifications and benchmarks. MSI Radeon RX 580 Mech 2 8G OC runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory, while video card PNY GeForce GTX 1660 SUPER 6GB XLR8 Gaming OC Dual Fan runs at 1.530 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 125 W. Compare the table of benchmark results to find out which graphic card is better.