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Member Since: ‎03-20-2017
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Elitebook 840 G3 Display Port maximum resolution applies to single monitor or both of them in total?

Product Name: Elitebook 840 G3
Operating System: Microsoft Windows 7 (64-bit)

Hi,

 

its documentation states that

DisplayPort - Supports resolutions up to 4096 x 2160 at 60 Hz
 
Does it mean that both DisplayPorts in UltraSlim Docking Station can use this resolution so I can have two panels each up to this resolution (eg two 2560x1440 or two 4096 x 2160 etc)  or is it limit of sum of both monitors resolution and it wont work because
2560 + 2560 = 5120 is higher than  4096
and 1440 +1440 = 2800 which is higher than 2160?
 
Thanks for advice.
 
 
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Re: Elitebook 840 G3 Display Port maximum resolution applies to single monitor or both of them in to

It's a matter of bandwidth. The spec I saw for the Ultra Slim Docking Station shows that it uses the Display Port 1.2 standard which supports a maximum bandwidth of 17.28 Gbits/sec. Most docks and display port hubs share bandwidth so you need to determine the bandwidth the two monitors combined will use. Here is a bandwidth calculator.

 

In the example you gave each 2560x1440 @ 60hz monitor will use 6.6 Gbps.  x2 = 13.2 Gbps which is lower than the 17 Gbps max of the Display Port 1.2 standard.

 

So it should work but I hesitate to guarantee that it will work. 

There may be some other parameter I haven't thought of. Smiley Frustrated

 

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Associate Professor
Posts: 1,269
Member Since: ‎01-23-2009
Message 2 of 2 (213 Views)

Re: Elitebook 840 G3 Display Port maximum resolution applies to single monitor or both of them in to

[ Edited ]

It's a matter of bandwidth. The spec I saw for the Ultra Slim Docking Station shows that it uses the Display Port 1.2 standard which supports a maximum bandwidth of 17.28 Gbits/sec. Most docks and display port hubs share bandwidth so you need to determine the bandwidth the two monitors combined will use. Here is a bandwidth calculator.

 

In the example you gave each 2560x1440 @ 60hz monitor will use 6.6 Gbps.  x2 = 13.2 Gbps which is lower than the 17 Gbps max of the Display Port 1.2 standard.

 

So it should work but I hesitate to guarantee that it will work. 

There may be some other parameter I haven't thought of. Smiley Frustrated

 

Smiley Wink If you found my answer helpful please say thanks by clicking on the Thumb's Up icon.
        If my answer solved your problem please mark it as the Accepted Solution. Thanks!

 

 

 

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