2k isnt a specified res, say 1440p instead

what gpu?

hdmi or hdmi adapter cable will limit to 1204hz
dp 1.4 cable will be able to use 240-260hz

check its osd menu to see what its max refresh rate is set to

Originally posted by _I_:

2k isnt a specified res, say 1440p instead

what gpu?

hdmi or hdmi adapter cable will limit to 1204hz
dp 1.4 cable will be able to use 240-260hz

check its osd menu to see what its max refresh rate is set to

i have rtx4070

Have you tried switching HDR off?

I know that my monitor (not the same as yours) limits the refresh rate if I switch HDR on.

I think you can select a lower bit-rate to compensate. In other words 8-bit HDR should be fine.

Originally posted by Pocahawtness:

Have you tried switching HDR off?

I know that my monitor (not the same as yours) limits the refresh rate if I switch HDR on.

I think you can select a lower bit-rate to compensate. In other words 8-bit HDR should be fine.

its off

Originally posted by Shadowsシ:

I can't set 240Hz on a 2K monitor. The AOC Q27G4ZR monitor allows 240Hz in 2K, but when connected via DP, it only sees 165Hz in 2K. I don't want to use a full HD monitor.

It can happen if a cable has not enough bandwidth.
Did your cable come with the monitor? If not, then try a new, faster cable.

Originally posted by C1REX:

Originally posted by Shadowsシ:

I can't set 240Hz on a 2K monitor. The AOC Q27G4ZR monitor allows 240Hz in 2K, but when connected via DP, it only sees 165Hz in 2K. I don't want to use a full HD monitor.

It can happen if a cable has not enough bandwidth.
Did your cable come with the monitor? If not, then try a new, faster cable.

yes DP 1.4 come with the monitor,what the fasted cable?

Nvidia control panel, change resolution tab and make sure it's at 8 bpc and output dynamic range to limited.

It's should work though at 240Hz with 10bit using DSC, could for sure be the cable isn't up for the job.

Originally posted by wing0zero:

Nvidia control panel, change resolution tab and make sure it's at 8 bpc and output dynamic range to limited.

It's should work though at 240Hz with 10bit using DSC, could for sure be the cable isn't up for the job.

nah

sounds like a dual mode monitor that will only run 240 in 1080p and 165hz at 1440p......many monitors are like this.....

to all the people talking about HDMI he would not even hit 165 without being on display port already

Originally posted by Shadowsシ:

Originally posted by C1REX:

It can happen if a cable has not enough bandwidth.
Did your cable come with the monitor? If not, then try a new, faster cable.

yes DP 1.4 come with the monitor,what the fasted cable?

If it came with your monitor then it should be fast enough. Unless it’s faulty.
I’ve checked the specs and your monitor should be able to do 1440p/240Hz.
Sorry, but I don’t know why you have this problem and what to advise you.

Maybe try different cables and if possible a different PC.

That monitor is very confusing.

If we go to the official specifications page on the website, it very clearly does say it's capable of 240 hz here: https://aoc.com/us/gaming/products/monitors/q27g4zr/specification

But then if we look in the manual here: https://mmd-aoc2.oss-cn-hongkong.aliyuncs.com/Products/Monitors/G%20Line/G4/Q27G4/Q27G4_manual.pdf and go to the resolution specifications on page 26 it says it only supports up to 180 Hz and only over displayport.

I'm not sure why it doesn't work up to 240 hz. Perhaps you need to set it to 180 then create a custom driver profile to set it the last bit to 240 hz.

Originally posted by Ontrix_Kitsune:

That monitor is very confusing.

If we go to the official specifications page on the website, it very clearly does say it's capable of 240 hz here: https://aoc.com/us/gaming/products/monitors/q27g4zr/specification

But then if we look in the manual here: https://mmd-aoc2.oss-cn-hongkong.aliyuncs.com/Products/Monitors/G%20Line/G4/Q27G4/Q27G4_manual.pdf and go to the resolution specifications on page 26 it says it only supports up to 180 Hz and only over displayport.

I'm not sure why it doesn't work up to 240 hz. Perhaps you need to set it to 180 then create a custom driver profile to set it the last bit to 240 hz.

no

if the monitor and connection and gpu support the res, refresh it will be on the edid list
to get 260hz, oc needs to be enabled on the display osd menu
but if its not even showing 240hz, the cable or port is limiting it

you dont need to make a custom res/refresh in gpu control panel for it

it says it only supports 1440p upto 120hz with hdmi (consoles)
op is using dp, but if its a dp-hdmi cable, then it will be 1440p 120hz max

I know that some cheap HDMI cables showing 4K, 120Hz, HDR capability trick people by not saying it’s not at the same time.

So it’s either 4K60fps or 1080p120fps.

The specs of the monitor seem to be genuine but maybe it’s the same trick?

Use a program called custom resolution utility (CRU) to reset the windows monitor profile. First run reset, the restart64. When that's done, set your screen to 2k and your desired refresh rate.

Originally posted by Ontrix_Kitsune:

That monitor is very confusing.

If we go to the official specifications page on the website, it very clearly does say it's capable of 240 hz here: https://aoc.com/us/gaming/products/monitors/q27g4zr/specification

But then if we look in the manual here: https://mmd-aoc2.oss-cn-hongkong.aliyuncs.com/Products/Monitors/G%20Line/G4/Q27G4/Q27G4_manual.pdf and go to the resolution specifications on page 26 it says it only supports up to 180 Hz and only over displayport.

I'm not sure why it doesn't work up to 240 hz. Perhaps you need to set it to 180 then create a custom driver profile to set it the last bit to 240 hz.

You are looking at the wrong manual for the Q27G4; the OP stated they have the AOC Q27G4ZR. That is not the same product.

The manual is available for download on their support site

https://aoc.com/us/gaming/products/monitors/q27g4zr/downloads

@OP, read the manual.

The default "Optimal Configuration" that is factory set is for 1440p@60Hz for HDR content. You'll need to use the OSD on the monitor to change the settings to set HDR mode to OFF and HDR to OFF. Then you will need to enable DCR (dynamic contrast ratio) and set the color space to "Panel Native" instead of DCI-P3 or sRGB. Then under Game Setting in the OSD ensure Adaptive Sync is enabled and Overdrive is set to Fast or Faster. Then at the bottom of that menu item set OverClock to enabled.

Then make sure your input source is DisplayPort (1). On your computer in the Nvidia App and/or Nvidia Control Panel enable G-sync and set the display resolution to 2560x1440p@240Hz.

Also as others have said, it could still also be the cable they shipped with it being less than stellar and not being stable for the bandwidth needed to run the display at 2560x1440p@240Hz. But first make sure you've configured both the display side and your computer side to support the higher refresh rate.

Also you'll want to make sure you've installed the display drivers. Which Windows OS version and build are you using? If you are on an earlier build of Windows 10 their driver does not support the full range of refresh rates according to the manual.

EDIT: It's also not listed as G-Sync compatible and is only listed as Adaptive Sync and all of the supported cards listed in the manual are Radeon GPUs. So G-Sync may not work properly and you may need to disable it and not use VRR.