I've had both also, and the blower noise between the two is exaggerated. A blower card sounds like a blower card. If you prefer the tone of the blower on the 1080 vs the Vega 64, then buy the damn 1080. You can very easily modify the fan curve using Wattman on the Vega 64 which is built into the driver. You can't do that with the Nvidia card without a 3rd party app.