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4 PROJECTORS OUTPUT



  • @jhoepffner 

    Okay. I have been reading a bit about the Alienware amplifier and I am aware that the internal gpu of the laptop gets completely taken over by the one in the amp and its a bit of work to achieve a sync between the internal screen and the external outputs.

    Besides I dont know much about refresh rates and lags. I will have to read about all that :)

    I will be getting my card in a day or so, its a zotac gtx 1080 blower edition. Hopefully, I am expecting at least 3 displays, if not 4, without overloading the system or bottlenecking the cpu. 

    Thank you for the input. I shall approach with care..

    Regards

    Saif


  • Tech Staff

    @saif

    You need to remember that the laptop display counts as one of the 4 total displays that a nVidia gtx interface allows.
    If you are looking to run the laptop screen plus 4 external displays, you will need an extender like a Matrox, so that the system still only sees a total of 4 displays.

    What video card is in the Laptop? You may get nearly the same (or better) performance using the internal card.



  • @DusX 

    Hi, the internal gpu is a gtx 970M 3gb. It has 1 hdmi and 1 mini display port. No thunderbolt.

    As for the amplifier, the connectivity cable carries data at x4 PCIe Gen 3 data rates, 4gb per sec. Thundebolt is 2.5gb per sec.

    So in a way, the external gpu is sort of integrated with the laptop although at a lower bandwidth as compared to 4 lanes. This allows a major leap in performance when it comes to gaming. So I was hoping, only running high res videos should not be so intensive. I can settle for a total of 4 displays including the internal screen for now. And will have to invest in a matrox if the number goes up. 

    I  thought nVidia would support those many displays, since the 10 series cards actually have 5 outputs in total. Thanks for the advice. Much appreciated.

    Regards

    Saif



  • @saif

    You can get three extra outputs from a Dell D3100 docking station. As well as from an MST hub from your MiniDisplay Port. If you're just going to be outputting 3 x 1900 x 1080 displays in addition to the laptop display, this is all you need. And a lot cheaper than the external GTX1080.

    The show in my signature outputs to three HD projectors using the Dell D 3100docking station. My laptop only has a Quadro K1100M, just 2GB of memory.

    Just pointing this out for future consideration of others.



  • @mark_m 

    Hey never looked into those options at all. Had looked at the TH2go and then moved onto the amplifier as it looked promising with my laptop.

    This sure is good information as I may have been going for an overkill. Although I was intrigued by the idea whether I will be able to run 3 displays of 4k videos with the amp and the 1080. Ambitious though, maybe for a future prospect.. Now that I already have spent on the dock and the card is on its way :) 

    Thanks and Regards 

    Saif



  • @saif

    We'll all be interested to know your experience of the amplifier and the GTX1080! For sure, the solutions I suggested won't support UHD/4K!

    Cheers

    Mark



  • @mark_m 

    Just checked the video on your site! So awesome! Hope to work on something like this soon...Am just collecting hardware and learning software so far.

    Cheers

    Saif


  • Tech Staff

    as Mark outlined, I think you can work with your laptop  (gtx970 is very capable ) and a mst hub.

    With the mst hub it's important to realize it does not extend like a Matrox, it only supplies more connections, so you still have the max 4 limit. This means on a laptop you only need the 3 output mst hub. A 4 port mst will leave you with an unusable port, since the laptop screen uses 1 of the 4.



  • @DusX 

    I see. That means as and when I do need to have more than 3 external displays, I will definitely need a matrox.

    Btw how many displays can one achieve with an nvidia card with 4 ports coupled with a matrox. Is there a limit to how many TH2go can be connected to these ports? Just curious about how crazy it can get :) 

    Technically each of the ports on the card can have a matrox attached. Does that mean one can get 3*3 = 9 simultaneous ext displays? Or am i getting ahead of myself..

    Regards

    Saif



  • @saif

    There is some limitations to have 3X3 displays. First is, with 3X(1920x1080), Matrox can deliver only 50hz. Your internal display is quite all the time in 60hz (or 144hz) and its not good to have different frequency between screens. So you can choose to use 3X(1280x720), 3X(1280x800) or 3X(1280x800) @60hz or (my preferred) 2X(1920x1080)@60hz or 2X(1920x1200)@60hz

    I have tried to use 2 TH2Go, and I obtained 5 external HD displays @60hz (2 via TH2Go on the mini-DP, 2 via TH2Go on the mini-DP via TB3 hub and 1 on HDMI) but it was experimental, not in production, I never have occasion to test with 3 Matrox. Its important, when you use Matrox, not to take power from USB. When you have set it, take power from an external USB, you can have more cable length and you avoid to blow your motherboard!

    Reasonably, for more displays, I would build a computer with quadro cards, using nVidia mosaic. There is a good reason why media servers are build with that, its made for.

    Pushing too far the use of card mainly made for gamer (as geForce) can be a risk, I prefer to sleep well!



  • @jhoepffner 

    Oh okay! I ll keep that in mind as and when I do get into that big a game. As of now I ll play on a smaller scale.

    Thank you all for such great responses.

    Cheers

    Saif



  • Hi David,

    I am looking for the same setup with a Macbook Pro and think to go for a Razor Core X with an external eGPU. It will power up the macbook with 100watt and can run an super heavy card with 4 dedicated outputs as well. Now Radeon is the first choice, but just read about a script that also allows NVIDIA cards and that is also very interesting. A 9100 got 6 DisplayPort outputs... In time you can scale up the graphic cards just by swapping them. My first choice was the Datapath FX4 SDI, but now I think more in this direction and go from DisplayPort to SDI with Black Magic converters.