Comparison of Gainward GeForce GTX 980 Ti Phoenix GS video card vs ASRock Radeon RX 6800 Challenger Pro 16G OC video card by specs and benchmarks. Gainward GeForce GTX 980 Ti Phoenix GS runs at 1.241 GHz+ 24 % base clock speed and has 6 GB of GDDR5 memory, while video card ASRock Radeon RX 6800 Challenger Pro 16G OC runs at 1.241 GHz+ 24 % base clock speed and has 16 GB of GDDR6 memory. The weight is different, -- vs 1250 g. 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.