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Adding DP1.2 for multiple monitors using a dock

A

Andyk5

[H]ard|Gawd
Joined
Jul 27, 2011
Messages
1,154
So my DellM4800 has one DP1.2 port on it. The laptop is currently connected to a Dell port replicator, which has 2 DP1.2 ports on it. I am running a 4k 60hz monitor on one of them already, and I am wondering if the second one can also drive a 4K monitor.
I guess I want to make sure that the ports that are added by the docking station are have their own busses, instead of a shared one. I don't think a single DP 1.2 can drive 2 4k monitors daisy chained.
 
According to displayport.org, you are correct about Displayport's limits: 1.2 daisy chaining can't do more than one 4K display, while it can do two 2560x1600, four 1920x1200 or 1920x1080, or five 1680x1050:

http://www.displayport.org/cables/driving-multiple-displays-from-a-single-displayport-output/

(These are limits on Displayport. Video card limits may be lower - do your homework before you commit to pushing these limits.)

The port replicators I looked at on Dell's site were not informative about 4K capability, so you should probably just call them to find out if they have even tested them with 4K. With 4K being such a new thing, I wouldn't want to guess.
 
evilsofa said:
According to displayport.org, you are correct about Displayport's limits: 1.2 daisy chaining can't do more than one 4K display, while it can do two 2560x1600, four 1920x1200 or 1920x1080, or five 1680x1050:

http://www.displayport.org/cables/driving-multiple-displays-from-a-single-displayport-output/

(These are limits on Displayport. Video card limits may be lower - do your homework before you commit to pushing these limits.)

The port replicators I looked at on Dell's site were not informative about 4K capability, so you should probably just call them to find out if they have even tested them with 4K. With 4K being such a new thing, I wouldn't want to guess.
Click to expand...

Yes, I have seen that page. As far as the capabilities of the video card, K2100m supports up to 4 active displays, and a 4k screen I think would take up 2 of them since they are currently being produced as 2x 1920x2160 panels stitched in to one 3840x2160.
 
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