HIS R9 390 IceQ X OC 8GB Graphics Card H390QM8GD The card is equipped with improved power design which is great for OC! HIS cards utilize Dynamic Phase Control PWM IC to save power for better use. Along with improved power design, digital power design HIS cards make the best out of power, carrying better OC capability and pushing clock speeds to the full potential! The card is below 28dB when watching movies, surfing Facebook, working. The card remains quiet whether you are gaming, online socializing, entertaining or working.