Quad head graphic card.

Alex Deucher alexdeucher at gmail.com
Thu Jan 23 16:30:10 PST 2014

On Thu, Jan 23, 2014 at 5:48 PM, Grzegorz Sójka <gs at sojka.co> wrote:
> On 01/23/14 23:26, Alex Deucher wrote:
>> On Thu, Jan 23, 2014 at 4:57 PM, Grzegorz Sójka <gs at sojka.co> wrote:
>>> Hi there,
>>> I have 4 identical monitors. So I decided to buy (not to expensive,
>>> around 100USD) quad head graphics card. I do not need anything
>>> particular. Only office applications, no gaming. The crucial thing is
>>> that I would like to be able to span a single window across all 4
>>> monitors. I found following cards:
>>> Gigabyte Radeon HD7770 OC
> [...]
>> Any recent radeon hardware supports multiple monitors just fine with
>> the caveat that if you are using more than 2 non-displayport monitors,
>> they have to all use the same clock (you are limited to two
>> independent clocks), or you need active dp adapters.  If all of the
>> monitors are identical, it shouldn't be a problem.
> I mentioned the following radeon graphics adapter:
> http://www.gigabyte.com/products/product-page.aspx?pid=4278
> So definitely it is capable of driving for monitors. The question is if it
> is possible to configure X server in such a way that all 4 monitors
> connected to this particular adapter are in one logical DISPLAY.
> At the moment I use two dual head ATI FirePro 2270 graphics cards. As a
> consequence I have two logical (dual-monitors) DISPLAYS and I'm not able to
> span a single window across more than 2 monitors.

Yes, you can drive 4 displays off a single gpu and use them all as a
single desktop.


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