Comparison of ZOTAC GeForce GTX 980 Ti video card vs PowerColor Red Devil Radeon RX 6750 XT 12GB video card by specifications and benchmarks. ZOTAC GeForce GTX 980 Ti runs at 1.000 GHz base clock speed and has 6 GB of GDDR5 memory, while video card PowerColor Red Devil Radeon RX 6750 XT 12GB runs at 2.200 GHz base clock speed and has 12 GB of GDDR6 memory. The TDP of the first video card is 250 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.