Comparison of GIGABYTE Radeon RX 6900 XT Gaming OC 16G video card vs GALAX GeForce GTX 1660 Prodigy video card by specifications and benchmarks. GIGABYTE Radeon RX 6900 XT Gaming OC 16G runs at 1.875 GHz+ 3 % base clock speed and has 16 GB of GDDR6 memory, while video card GALAX GeForce GTX 1660 Prodigy runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 340 W+ 13 %, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.