Comparison of XFX Radeon RX 5700 Double Dissipation video card vs GALAX GeForce GTX 1660 Ti Prodigy video card by specifications and benchmarks. XFX Radeon RX 5700 Double Dissipation runs at 1.565 GHz+ 7 % base clock speed and has 8 GB of GDDR6 memory, while video card GALAX GeForce GTX 1660 Ti Prodigy runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 180 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.