Question Radeon RX 460 240hz (HDMI)

[pcnoobplshelp]

so I don't really know whats going on but I've been trying to get my Sony 3D Display to output 240hz to use as my monitor. The problem is, is that I have an HDMI 2.0 and a Radeon RX 460, but when I go into my adapter settings, it doesn't show me hz over 60.

 

[rgd1101]

exact model of the sony monitor?

 

[pcnoobplshelp]

exact model of the sony monitor?

CECH-ZED1U

 

[rgd1101]

https://www.newegg.com/sony-cech-zed1u-pb-r-24/p/N82E16824006288
from the review 240 is internal. 60 is the real refresh rate