Comparison of NVIDIA GeForce GTX 980 Ti video card vs XFX Radeon RX 6800 video card by specs and benchmarks. NVIDIA GeForce GTX 980 Ti runs at 1.002 GHz base clock speed and has 6 GB of GDDR5 memory, while video card XFX Radeon RX 6800 runs at 1.002 GHz base clock speed and has 16 GB of GDDR6 memory. The weight is different, -- vs --. The TDP of the first video card is 250 W, and the second is 250 W . Compare the benchmark results to find out which video card is better.