Adapt DVI to HDMI @ 2560x1440 resolution

thebadmachine on 25/12/2020 - 19:43
Last edited 25/12/2020 - 21:52

Read a bit online about this just now.
Basically says all DVI to HDMI cable only work up to maximum 1920x1080.
(2560x1440 needs “dual link” DVI & all adapter cables use fake “dual link” pins so they are only “single link” - means monitor goes black at any resolution above 1920x1080)

One post linked to a chinese blog saying they can customise software to make it work, but in the same post they said their graphics card heats up a lot more so this is bad.
(Another option says you need to buy 3 different adapters and one uses extra power supply)

Computer is old so only has DVI output. Many new monitor has HDMI or DisplayPort input only.

Would like just single cable / adapter to connect DVI output to HDMI input on monitor @ 2560x1440 resolution.

Maybe should just give up before buying anything, this is just becomes a big headache.

If anyone has tried this / or been in same position please share any information thanks.

Computing

Comments

  • Brotality on 25/12/2020 - 20:12

    I've tried some brandless cables before (they did have the dual link pins), they can normally do 1440@60hz, I'm guessing its not a popular enough resolution to list.

    These days I just buy these DVI to HDMI adapters and use normal HDMI cables.

    • thebadmachine on 25/12/2020 - 21:39

      I've tried some brandless cables before (they did have the dual link pins), they can normally do 1440@60hz

      Ok thanks that helps. So maybe worth trying…
      A lot of posts on other forums says they have the pins, but they are fake (so they just look like they can do 1440).
      Also some saying “DVI is old” so companies are only making new HDMI cables, and that is how come most DVI to HDMI cable maximum is 1080.

      Looking at Amazonbasics DVI to HDMI cable and some reviews saying 1440 works some saying it lies (and Amazon description should remove information saying 1440 to 4K compatible etc).
      And now Amazon shows zero info about compatible resolution.

  • Switchblade88 on 25/12/2020 - 20:42

    You didn't ask a question, we don't know what you want.

    Adapters & cables are cheap, buy one and try.

    But if your computer is so old it doesn't even have HDMI, then maybe it doesn't support higher resolutions anyway - get a new PC instead.

    • thebadmachine on 25/12/2020 - 21:41

      Just wondering if it is even worth effort.
      Trying is also expensive if it is failure, since you need to buy different monitor which actually has DVI input etc.

      Maybe you are right, should just use “normal” cable (HDMI to HDMI etc) like everyone else, just graphics card are so expensive compared to cable.

      • Screamingeagle on 25/12/2020 - 21:53

        If your computer has an spare PCIe 16x slot (or you can change your existing video card) you can purchase a GT710 which can do up 4096x2160 @24 Hz through the HDMI port for $55 from Umart or MWave.
        Depending on your what your using the computer for as to whether or not that would be a suitable card though.

        • thebadmachine on 25/12/2020 - 22:00

          Thanks. Another option.
          Just checked it does 2560x1440 @ 60hz.

          It is cheap (for graphics), but expensive at the same time.
          Amazonbasics DVI to HDMI cable costs $8, so maybe worth trying first.
          Just basic computer use (like office use), downloaded free game recently but pretty sure it will run on any newer graphics (current graphics is extremely old).

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