please answer. are game settings affect psu watt? you lie i know. because i saw r9 270 i5 3570k cx430 stable 60fps ultra on youtube. but i dont know what is your aim? so. tell me i can play with r9 270 on ultra
I saw a UFO on youtube... go figure.
Yes settings will affect power usage, if you are running a game requiring little GPU power then you'll pull little power from the wall, turning the settings down will affect it in this way, but it will use approximately all of the power all of the time on BF4.
On 'ULTRA' bf4 will get less than 42fps: http://www.anandtech.com/bench/GPU14/931