Custom Resolution Utility (CRU)

[falkentyne]

(12-09-2015 06:24 AM)abso Wrote:  Hello everyone,

I'm trying to run my 120hz Monitor (LG 2363D) with my old Laptop. Only way to connect it is by HDMI and the AMD HD5650 GPU inside. I was reading that HDMI cant handle the bandwith of 1080p@120hz so I'm trying to use lower resolutions for ingame use. I used CRU to make 1024x768 resolution @ 120hz which is fine for playing Quake. 120hz worked but i have the problem that the picture is strechted instead of black bars left and right. I activated gpu scaling but it doesnt seem to work. Anyone can help me out? Thanks already in advance.

EDIT:

So I just set at custom resolution 1920x1080@120hz and for some reason it seems to work. Monitor UI shows HDMI 1 - 1920x1080 - 120Hz and ingame it feels really smooth as well compared to when I set it to 60hz. How is this possible? Basically everywhere I was checking I was told it is impossible for various reasons. Anyone can explain why it seems to work?

HDMI 1.4 is fully capable of running at 120hz at 1920x1080.
The specifications allow it. The cable (if it's a hdmi 1.4 cable...if that even exists in the first place.....ToastyX?) allows it.

The problem is that many monitor manufacturers don't install HDMI chips that are capable of running at 120hz at 1080p, even though the official specifications allow it. Instead, to cut costs, they use HDMI chips that only run at single link DVI speeds.

Actually callsignvega explained it better.

http://www.overclock.net/t/1323010/can-hdmi-do-120hz/10

Quote:There is a single reason why HDMI 1.4a cannot process a 120 Hz 1080P signal. The specification and cable can handle it. It is that all HDMI pixel clock chips produced have been under the frequency requirement to handle that bandwidth. New HDMI pixel clock chips are coming out in 2013 that will run at 330 MHz and be able to run 1080P @ 120 Hz. The main drive behind that is to get true 120 Hz 1080P projectors for true 60 Hz/Eye 3D. I'd imagine the proper (faster) HDMI chips would find their way into any decent display.

This monitor has also been proven to do 120hz over HDMI at 1080p (1920x1080)
https://www.kogan.com/au/buy/kogan-24-le...g-monitor/

https://assets.kogan.com/files/usermanua...144A-A.pdf

http://forums.blurbusters.com/viewtopic.php?f=2&t=2512