Comparison of GIGABYTE Radeon RX 6700 XT 12G video card vs GIGABYTE GeForce GTX 1660 SUPER D6 6G video card by specifications and benchmarks. GIGABYTE Radeon RX 6700 XT 12G runs at 2.321 GHz base clock speed and has 12 GB of GDDR6 memory, while video card GIGABYTE GeForce GTX 1660 SUPER D6 6G runs at 1.530 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 230 W, and the second is 125 W. Compare the table of benchmark results to find out which graphic card is better.