From Noctua Press Release: Following the resounding success of the ASUS GeForce RTX 3070 Noctua Edition, ASUS and Noctua have presented another graphics card that runs exceptionally quiet thanks to a jointly-developed cooling solution: Like the GeForce RTX 3070 model, the new ASUS GeForce RTX 3080 Noctua Edition employs two Noctua NF-A12x25 fans and a tailored heatsink, which enables it to run quieter than any other card in its class.
At typical auto-speed fan settings, the Noctua Edition runs 4.5 dB(A) quieter than the ASUS TUF Gaming GeForce RTX 3080 while achieving 3°C lower GPU temperatures and 14°C lower VRAM temperatures. In sum, the Noctua Edition provides lower noise levels across the entire speed range with the most prominent improvement of almost 9dB(A) at maximum fan speed and 2-5dB(A) at lower speeds. The reduced noise levels go hand in hand with lower GPU temperatures as well as substantial reductions in memory temperature of up to 22°C.