John Kreno on 14 Jan 2019 19:19:42 -0800


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Re: [PLUG] 3 MOnitor Video Hardware


The earlier suggestion about workstation grade cards is probably your best bet. The Matrox card I listed is limited to  2560 x 1600 per display. 

On Mon, Jan 14, 2019 at 6:23 PM MailList <MailList@nerdworld.org> wrote:

Thanks to all for the suggestions.

I have 1 question, which I think I know the anser to but would love confirmation.

The simplest way to connect multiple monitors with DisplayPort is to daisychain them, but this soon runs out of bandwidth if the monitors are UHD.  But, I believe that if there are multiple DisplayPorts on the graphics card, they can all be driven UHD without hitting a bandwidth limit.

So, this Matrox card that John listed could drive 4 UHD monitors.

Is this correct?



TIA!


On 1/14/19 1:56 PM, John Kreno wrote:



On Mon, Jan 14, 2019 at 12:51 PM Soren Harward <stharward@gmail.com> wrote:
On Sun, Jan 13, 2019 at 5:53 PM Casey Bralla <MailList@nerdworld.org> wrote:
Should I go with ?
 - HDMI
 - DVI
 - DisplayPort

DisplayPort.  It's no contest.

"Drives three 4k monitors" as a "must have" makes it pretty easy to answer the rest of the question:

Intel GPUs can drive three displays, but I don't know of a single mobo that has three DP outputs; there aren't even many with two.  Consumer (read: gamer) oriented AMD and nVidia cards typically have one DP output, and very few have two.  So for three DP outputs, you're pretty much limited to professional graphics boards: nVidia's Quadro and NVS lines, AMD's Radeon Pro (or older FirePro) series, or something uncommon like a Matrox C680.  My recommendation is an AMD FirePro W4100 or NVS 510, both of which are about $250.

If your mobo has two 16× PCIe slots, then it might seem like a cheap solution would be to buy two cards, each with dual DP outputs.  But my experience with Xinerama back before cards had multiple (independent) outputs was that this setup was always finicky.  Googling "how to set up three monitors in X" suggests that things haven't improved.
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--
John Kreno

Rightful liberty is unobstructed action according to our will within limits drawn around us by the equal rights of others. I do not add 'within the limits of the law' because law is often but the tyrant's will, and always so when it violates the rights of the individual.
- Thomas Jefferson

I despise people who go to the gutter on either the right or the left and hurl rocks at those in the center.
- Dwight D. Eisenhower

Don't join the book burners. Don't think you're going to conceal faults by concealing evidence that they ever existed. Don't be afraid to go in your library and read every book...
― Dwight D. Eisenhower

With a good conscience our only sure reward, with history the final judge of our deeds, let us go forth to lead the land we love, asking His blessing and His help, but knowing that here on earth God's work must truly be our own.
- John F. Kennedy

___________________________________________________________________________
Philadelphia Linux Users Group         --        http://www.phillylinux.org
Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
General Discussion  --   http://lists.phillylinux.org/mailman/listinfo/plug
___________________________________________________________________________
Philadelphia Linux Users Group         --        http://www.phillylinux.org
Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
General Discussion  --   http://lists.phillylinux.org/mailman/listinfo/plug


--
John Kreno

Rightful liberty is unobstructed action according to our will within limits drawn around us by the equal rights of others. I do not add 'within the limits of the law' because law is often but the tyrant's will, and always so when it violates the rights of the individual.
- Thomas Jefferson

I despise people who go to the gutter on either the right or the left and hurl rocks at those in the center.
- Dwight D. Eisenhower

Don't join the book burners. Don't think you're going to conceal faults by concealing evidence that they ever existed. Don't be afraid to go in your library and read every book...
― Dwight D. Eisenhower

With a good conscience our only sure reward, with history the final judge of our deeds, let us go forth to lead the land we love, asking His blessing and His help, but knowing that here on earth God's work must truly be our own.
- John F. Kennedy
___________________________________________________________________________
Philadelphia Linux Users Group         --        http://www.phillylinux.org
Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
General Discussion  --   http://lists.phillylinux.org/mailman/listinfo/plug