The only time I notice framerate drops is games like Dark Souls when I go into the poison swamp.
Which drops from 30 to around 15 or less.
15 is unplayable, 30 is not and it is almost no different from 60.
Anyone that's bullstuffting about how 30 is unplayable is no different from people who buy the new iphone every year thinking the hardware is better than before when in reality it's just a slight increase on the camera and other stuff. Not worth the 800 dollars.