Comparison of Sapphire Radeon RX 6800 video card vs ASUS ROG Poseidon GeForce GTX 980 Ti Platinum video card by specs and benchmarks. Sapphire Radeon RX 6800 runs at 1.800 GHz+ 6 % base clock speed and has 16 GB of GDDR6 memory, while video card ASUS ROG Poseidon GeForce GTX 980 Ti Platinum runs at 1.800 GHz+ 6 % base clock speed and has 6 GB of GDDR5 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.