Custom Resolution Utility (CRU)

[makisman]

Hi to all i am new here, so nice to meet you all.
First of all thanks to ToastyX for the great CRU tool.

I bought the LG 24MP58VQ IPS which is 1920x1080 60hz.

Used the CRU and reached 76hz at LCD reduced and 75hz at LCD standard.

That's the weird thing because at 75hz the pixel clock is 174.57 while at 76hz it is 164.81.

Now if i go 77hz LCD reduced the clock is lower than 174.57 but doesn't let me and get an out of range warning. Is that normal?

My GPU is integrated INTEL HD 530 and connected via HDMI 2.0 cable.
The motherboard graphics output is HDMI 1.4 and the monitor i think supports HDMI 2.0. Should i use DVI-D connection to override the out of range warning and go further?

I shall upgrade my GPU to an AMD RX 480 probably. Will i be able to go further?

Thanks in advance.