Comparison of ASUS ROG Poseidon GeForce GTX 980 Ti video card vs ASUS Dual GeForce RTX 2080 Ti video card by specs and benchmarks. ASUS ROG Poseidon GeForce GTX 980 Ti runs at 1.000 GHz base clock speed and has 6 GB of GDDR5 memory, while video card ASUS Dual GeForce RTX 2080 Ti runs at 1.000 GHz base clock speed and has 11 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.