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  1. Post
    #1

    Gaming laptop - external 1440p 144hz monitor

    Hi guys.

    So I'm trying to connect a 1440p 144hz monitor to my gaming laptop that has the horse power.

    The laptop has the following connectors :
    USB type 3.1
    Hdmi 2.0
    Mini display port

    I am trying to find a way for the dedicated gpu to power the screen but before I spend money on the options, what are your thoughts on the way to get at least 120hz output?

    The hdmi does not seem to be working so I thought mini dp - display port cable however I can't find details if this will push the resolution and refresh rate.

    Alternatively I go with a usb3.1 cable or dock that has display port compatability. Has anyone on here tried this as yet?

    Update :
    Alienware 17r4 is running mini display port 1.2.
    The laptop has a thunderbolt 3 port as well.

    Sent from my iPhone using Tapatalk
    Last edited by VOID_NZ; 26th August 2019 at 10:51 am.

  2. Post
    #2
    The gaming laptop I had had the HDMI hooked up to the IGP only and the mDP hooked up to discrete (GTX 970m).

    Meant I couldn't run 4K60p on my second display.

    1440p120 (3.7MP x 2) is fewer pixels per second than 4Kp60 (8.3MP) so it should in theory be able to drive it fine but you'll need to make sure you get a cable that can handle the bandwidth. My first mDP to DP cable from PBTech couldn't (no version number) but my second mDP to DP 1.4 cable from Ali could. I think it needs to be a cable of at least version 1.2.

  3. Post
    #3
    DP should do that, HDMI port would need to be 2.0 and then yea it would depend what is it is wired too, my work laptop has a dGPU but the HDMI port will only do 4K30 have to use USB-C to DP adaptor to get 4K60

    Everything is full of stupid case by case limitations.

  4. Post
    #4
    I would have thought DP would work well. I'd look up the laptop model to see what is connected to what.

    I wouldn't expect a USB 3 dock to deliver that. I actually have one right here and a 1440p 144hz monitor so I could actually test it for you if you decide you want to try that. I'm 90% sure it won't work though - well won't work for high refresh/low latency etc.

    I'd just try DP.

    edit: Just has a look - it looks to me like either DP or HDMI should be connected to the discreet GPU - all of the references to the ports don't differentiate between the ports at all.

  5. Post
    #5
    Hey guys,

    I want to buy a Lenovo laptop and the variant I want (S940) has two options and I don't know which one to pick.

    It is a 14 inch laptop and it can have a 1920x1080 display or a 4k one, nothing in between. So I wanted to see if you guys could help me out. The 4k one is 160€ more expensive, the 1080 has a better battery life but 1920x1080 coming from a macbook pro seems like a downgrade. Many consider 4k overkill in a laptop, so any opinions?uc browser shareit appvn


    I'll leave some specs below: -Intel I7-1065G7 -16GB RAM -400 Nits(1920x1080)/500 Nits(4k) -52Wh battery -1TB SSD

    Thanks in advance!
    Last edited by JonathanFernas; 1st December 2019 at 2:37 am.

  6. Post
    #6
    I think I'd be happy at 1080 in 14".