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18 Posts

11-27-2017

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Will the ThinkPad Workstation Dock 230W power 2 x 2560x1440 Monitors @ 60Hz

2017-11-27, 9:29 AM

Hi,

 

Can somebody please confim if the ThinkPad Workstation Dock 230W will power 2 x 2560x1440 monitors @ 60Hz? When I look at this link ThinkPad Workstation Dock 230W it onlyy talks about 3840x2160 and 1920x1200. I suspect if it is purely passing through 1 x 1.2 DisplayPort that it will indeed work but I see nothing to confirm this anywhere.

 

Thank you in advance!

 

Jonathan.

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551 Posts

10-03-2011

CA

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Re: Will the ThinkPad Workstation Dock 230W power 2 x 2560x1440 Monitors @ 60Hz

2017-11-27, 14:07 PM

The dock has a built-in MST hub, and considering that 2* 2560x1400 is fewer pixels than 1x4K, it should work fine with 2 monitors.

 

Adding 3rd monitor will require Thunderbolt 3 -> DisplayPort adapter, plugged into the laptop itself.

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18 Posts

11-27-2017

GB

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Re: Will the ThinkPad Workstation Dock 230W power 2 x 2560x1440 Monitors @ 60Hz

2017-11-27, 14:30 PM

Thanks for your reply. I notice you mention I would require a Thunderbold 3 adapter. Could I not used a USB 3 to DisplayPort adapter for this? Something like this https://www.startech.com/uk/AV/USB-Video-Adapters/USB-3-to-Displayport-Video-Card-Multi-Monitor-Adapter-2560x1600~USB32DPPRO?

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551 Posts

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Re: Will the ThinkPad Workstation Dock 230W power 2 x 2560x1440 Monitors @ 60Hz

2017-11-27, 16:46 PM

As far as I understand, all these USB->HDMI/DisplayPort/... adapters are effectively an external underpowered GPU, that require separate drivers, and seen as a separate display adapter. For displaying relatively infrequently updated text (such as MS Office, most of software development etc) it's totally fine, but for these purposes 30Hz screen update rate is also fine. 

 

Thunderbolt3->DisplayPort adapter is different, and lets the already existing GPU work. If you really need 60Hz refresh rate (video, gaming), you'd want something like https://www.startech.com/uk/AV/Converters/Video/thunderbolt-3-to-dual-displayport~TB32DP2 (haven't used this particular one). 

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18 Posts

11-27-2017

GB

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Re: Will the ThinkPad Workstation Dock 230W power 2 x 2560x1440 Monitors @ 60Hz

2017-11-27, 17:15 PM

Appreciate your help - thank you!

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