Comparison of ASUS TUF Gaming GeForce RTX 3080 12GB video card vs ASUS TUF Gaming GeForce RTX 3090 OC video card by specs and benchmarks. ASUS TUF Gaming GeForce RTX 3080 12GB runs at 1.260 GHz base clock speed and has 12 GB of GDDR6X memory, while video card ASUS TUF Gaming GeForce RTX 3090 OC runs at 1.260 GHz base clock speed and has 24 GB of GDDR6X memory. The weight is different, -- vs --. The TDP of the first video card is 350 W, and the second is 350 W . Compare the benchmark results to find out which video card is better.