#Looking to use 3 monitors but I'm stuck using 2 due to monitor limitations

1 messages · Page 1 of 1 (latest)

toxic galleon
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Good afternoon / evening / morning and thank you guys in advance for some help. As the title suggests I'm looking for help on monitors to buy or tech to buy to allow for a three monitor setup.
I currently have 2x Alienware aw2725df monitors.
PNY 4090 (3x display port 1.4s, and 1x HDMI 2.1)
My current motherboard if it matters is the MSI Pro Z790-A

I love the high refresh rate of 360hz @1440p resolution. However, when I bought a third monitor (same one as the other two) I can only use two of them, the third one is blank. No matter what combination of ports / cables I use. After a painstaking amount of research I found that alienware monitors or at least the ones I have are not able to disable DSC so my 4090 appears to be using all 4 slots instead of just 2 when using 2 monitors.

This leads me to my question. Do any of you know of a monitor (oled preferred) / gpu setup that will allow me to have 1440p across 3-4 monitors with a somewhat high refresh rate? Price isn't a problem, I just really would prefer to have more than 2 monitors
Thanks again everyone,
-Zach

abstract tendon
toxic galleon
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Both monitors via DP. And yes, I very much prefer the HDR setting

wet temple
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I don't think you are hitting a monitor limit. The monitor shouldn't care at all.

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I think you are hitting the pixel limit of the GPU

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Have you tried setting the monitors to 60Hz and seeing if they are discovered then?

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(And by pixel limit I mean pixels per second. So for each monitor it's 2560x1440x360)

toxic galleon
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I’ll try that after work and report back

toxic galleon
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Now that I"m home from work, is there an easy way to see which gpu head is active? I'll screenshot that for some clarity in this thread for those that are helping. Trying to figure out how to do that to show the information the easiest

toxic galleon
# wet temple I don't think you are hitting a monitor limit. The monitor shouldn't care at all...

Changing the monitors to 60hz still isn't working. The third gpu isn't discovered.

Trying to figure out a way to see which gpu heads are active. (I used to know how to see this but I have a feeling that each one of the monitors are using multiple heads, even at 60hz)

I haven't even thought about pixel limits. I should probably research what the pixel limit for the 4090 is for shopping purposes so that this problem I have doesn't happen again.

Thank you for the response by the way

wet temple
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I haven't even thought about pixel limits. I should probably research what the pixel limit for the 4090 is for shopping purposes so that this problem I have doesn't happen again.

Looking online, I don't see anything like this posted for any GPU released recently. On 10xx series you would see it with three high resolution/high refresh rate displays. HDMI was much more susceptible because of how the clock unit operates (And that ports shared the same clock chip which also limited Nvidia cards to two monitors for a long time if you used HDMI/DVI only, 10 series being the first to allow three monitors using just HDMI/DVI).

On 4000 series, it should practically not be a thing, but it's really hard finding proper info.

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And I found that it's not called the pixel clock/limit anymore as that was how the old tech worked, replaced even before 10xx series.

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It's now just bandwidth

toxic galleon
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I don't think it's a GPU problem. I think it is 100% my monitors that are creating the problem.

EIther way, I guess the question I know have is how do you calculate bandwidth on a gpu? I am shopping for new monitors now and want to just do the math prior to buying so that this doesn't happen again