Comparison of ASUS ROG Strix GeForce RTX 4090 OC Edition video card vs Gainward GeForce RTX 3090 Ti Phantom video card by specs and benchmarks. ASUS ROG Strix GeForce RTX 4090 OC Edition runs at 2.235 GHz base clock speed and has 24 GB of GDDR6X memory, while video card Gainward GeForce RTX 3090 Ti Phantom runs at 2.235 GHz base clock speed and has 24 GB of GDDR6X memory. The weight is different, -- vs --. The TDP of the first video card is 450 W, and the second is 450 W . Compare the benchmark results to find out which video card is better.