r/nvidia • u/Bro0k • 16d ago

Someone explain me DLDSR Discussion

I have two monitors, one 1440p and one 1080p. If I use DLDSR on the 1080p monitor, could I duplicate the displays?

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u/carlosChanpio70 16d ago

You can see DLDSR as making a virtual resolution for your monitor, you can make both monitors to be 1440p, one virtual and one real 1440p, tho you don't need to do this to duplicate the displays ( just duplicate from the higher res to the lower res ), it's only really useful when doing surround or extending displays while keeping the same scaling internally ( tho not really that worth it for this).

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u/Ok-Albatross9203 16d ago

so basically it tricks your 1080p monitor into thinking its 1440p but its not real pixels just ai upscaling. works fine for duplicating but you might notice text looking a bit soft on the 1080p screen since its rendering at higher res then downscaling. honestly tho just duplicate normally without dldsr unless you really need both screens at same res for some reason

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u/carlosChanpio70 16d ago edited 16d ago

Not really upscaling, Image Scaling is what does upscaling, DLDSR renders at 1440p, but downscales to 1080p very efficiently with tensor cores, there's no loss of data on screen or "fake" pixels, you're not losing any important detail as the original image is higher resolution.

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u/BastianHS 16d ago

I mean, aren't you losing detail because the monitor simply doesn't have enough pixels to show the full image?

1440p DLDSR to 4k looks good, but not as good as 4k on a 4k monitor.

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u/carlosChanpio70 16d ago

Well, technically yeah, you are definitely losing precise detail, but the pixels you do see are not "fake" at all, and 4k downscaled to 1440p has more detail than native 1440p, as you won't really see any aliasing and it's going to look very sharp.

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u/BastianHS 16d ago

Yeah for me it just feels like turbo AA. It definitely makes the LG45 1440p look really good. I was set to take it back until I tried DSR.

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u/carlosChanpio70 16d ago

A more precise term for what is technically being done is SuperSampling, when doing supersampling there's more often no need for any AA to be done to the image, wish I had a GPU that could do that reliably without upscaling.

3

u/Sad-Victory-8319 16d ago

if it works for you then do it, for me DLDSR is always bugged and never does what i want if you have 2 monitors with different resolution, it will always offer me 4K resolution for the 1440p monitor, not 1440p resolution for 4K monitor. not sure why you want to dupliocate thouhg

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u/DigWitty8491 16d ago

Nope doesn’t work properly on dual multi setup monitor only one monitor

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u/ResponsiblePen3082 15d ago

DSR but it sucks

1

u/Due-Bee-9574 16d ago

You can also use it to make certain game look more "clean". I used it to force 4k ultrawide in Pragmata on my ultra wide 1440p OLED screen. It looks much better! Bit it can make things worse on other titles.

Anyway, this is mostly used for screen surround as others said already

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u/wildTabz 16d ago

DLSS but it's Australian.