General question re: video cards - does Displayport 1.4 drive older Displayport monitors?

Discussion in 'Video Cards' started by peppergomez, Jul 1, 2019.

  1. peppergomez

    peppergomez Gawd

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    I own 2 HP ZR30w monitors and plan to keep them around until they die (which may be never, since they've been going strong for over a decade). They have just duallink-DVI and displayport inputs.

    In the market for a laptop and note that most cards don't have duallink-DVI, but that they do have 1.4 displayport. Will these 1.4 displayport inputs work to drive my ZRs at their native 2560x1600 res?

    Thanks.
     
  2. doubletake

    doubletake Gawd

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    DP 1.4 can drive up to 8k@60Hz.
     
  3. peppergomez

    peppergomez Gawd

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    My bad for not asking clearly. What I meant is are these newer 1.4 displayport inputs compatible with much older displayport cables to drive my old monitors.
     
  4. Grebuloner

    Grebuloner Gawd

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    Yes, DP is fully backwards compatible. I have HP LP2475w's which are the previous generation to your ZR30w and am running DP cables from my 1080ti with no problems whatsoever.
     
  5. Nenu

    Nenu [H]ardened

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  6. mnewxcv

    mnewxcv [H]ardness Supreme

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    Your monitors likely don't run 2560x1600, which I think was the concern. But yes, should work fine!
     
  7. Grebuloner

    Grebuloner Gawd

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    Indeed, they're only 1920x1200, but they are DP1.1 from a DP1.4 source, which is what's at play here. Any IGP/GPU in the last 10 years will support 2560x1600 resolution, as will any DP cable made by a minimally reputable manufacturer shipped in that time.
     
  8. peppergomez

    peppergomez Gawd

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    Thanks folks.

    My monitors are 2560x1600, in case there was any confusion about that.
     
  9. peppergomez

    peppergomez Gawd

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    Alrighty, so the laptop I am looking at is one for sale from an [H] member here, and it's an Alienware M15 laptop: https://www.dell.com/en-us/shop/laptops/15/spd/alienware-m15-laptop

    PORTS & SLOTS
    1. (2x) SuperSpeed USB 3.1 Type A | 2. HDMI 2.0 Output | 3. Mini-Display Port 1.3 Output | 4. Thunderboltâ„¢ 3 Port | 5. Alienware Graphics Amplifier Port | 6. Power/DC-In Port | 7. Noble Lock port (cable and lock sold separately) | 8. Killerâ„¢ Networks E2500 Gigabit Ethernet NIC | 9. USB SuperSpeed 3.1 Type-A with Powershare Technology | 10. Audio Out 1/8" Port (Compatible with inline mic headset)


    It looks like the Thunderbolt 3 port will be compatible with the displayport input on the HP ZR30w. That takes care of 1 HP ZR30w monitor but I need to drive 2 for photo editing.
    My understanding is that mini-displayport will not work with displayport.

    Can anyone weigh in on this, and what my options are re: driving 2 HPZr30ws from this laptop if there's only the 1 compatible port on the laptop? (The HP ZR30ws only have displayport and dual-link DVI).
     
  10. peppergomez

    peppergomez Gawd

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    PS There are male to male Displayport to HDMI adapator cables, which I thought could solve the issue, but they all seem to be uni-directional, connecting a DisplayPort (DP, DP++, DisplayPort++) equipped computer to an HDTV, monitor, or projector with HDMI input, but I need to opposite:-HDMI laptop to Displayport monitor. I need a b-directional cable, not a uni-directional one. Don't appear to be any on Amazon.



    https://www.amazon.com/DisplayPort-...d=1562086906&s=electronics&sr=1-1-spons&psc=1
     
    Last edited: Jul 2, 2019
  11. peppergomez

    peppergomez Gawd

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  12. Brian_B

    Brian_B 2[H]4U

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    Thunderbolt supports video, so if you have 1 TB and 1 miniDP, seems like your in good shape. I run several computers on mDP->DP with no issue.

    Also possible would be a HDMI->DP adapter, and running one from HDMI and one from DP?

    TB3 can support daisy chaining, but I don't think your monitors have built-in MST. External MST hubs exist, but I've never used one to comment on how well it works. They are also pricey, just another option.

    Finally a USB video adapter - it wouldn't be fast (no gaming), but it would be fine for standard desktop stuff.
     
  13. peppergomez

    peppergomez Gawd

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    Thanks Brian. Ahh, so miniDP>DP is indeed possible? That would solve my issue.