Skip to main content
lostlogic
New Participant
April 9, 2013

How to configure when using 2 SLI cards?

I run 4 monitors (2x2) on 2 SLI cards currently. I unplugged the top-right one and plugged the DVI cable into the Rift control Box. The question is, how do I configure Windows where I can still use my 3 other monitors and use the Rift for 3D Stereo testing?

I have tried doing the "Duplicate" option listed in the manual but Windows forces me to duplicate the main display to BOTH monitors 3 (LED) & 4 (RIFT). It leaves monitor 2 alone but messes up 3. It also causes problems with the display sending windows pop-ups to the RIFT where they are about impossible to see or manipulate.

Thoughts?

    12 replies

    cybereality
    Inspiring
    April 9, 2013
    Probably your best bet is to use an HDMI splitter to mirror one of your existing monitors.

    See this post: viewtopic.php?f=26&t=69&p=2282#p2259
    AMD Ryzen 7 1800X | MSI X370 Titanium | G.Skill 16GB DDR4 3200 | EVGA SuperNOVA 1000 | Corsair Hydro H110i Gigabyte RX Vega 64 x2 | Samsung 960 Evo M.2 500GB | Seagate FireCuda SSHD 2TB | Phanteks ENTHOO EVOLV
    lostlogicAuthor
    New Participant
    April 9, 2013
    Ok, so would I split the signal to my top-right monitor and just drag the game window to it for testing?

    I just ordered a DVI splitter.
    Xenovoid - Conquer the universe with thousands of others from your mobile phone or the PC. Currently under development. Rift support planned.
    cybereality
    Inspiring
    April 9, 2013
    You probably want to mirror your primary display. That way full-screen applications will open on it (though depending on the software you use, you may be able to target secondary displays in full-screen).
    AMD Ryzen 7 1800X | MSI X370 Titanium | G.Skill 16GB DDR4 3200 | EVGA SuperNOVA 1000 | Corsair Hydro H110i Gigabyte RX Vega 64 x2 | Samsung 960 Evo M.2 500GB | Seagate FireCuda SSHD 2TB | Phanteks ENTHOO EVOLV
    lordvtp
    Participant
    April 9, 2013
    Indeed, though using mirroring with Sli has some penalties...

    Splitter hooked to primary/Sli focus display and.....I currently recommend this configuration when possible.


    With Sli enbled, set the game specific properties to single-gpu and enable Sli-AA modes, v-sync disabled and triple buffering forced. This allows you to leverage your Sli capability while minimizing input latency.





    I plan to drop a line to some contacts I have with the nvidia driver team to see if they are interested in making HMD specific tweaks to the 3dvision system...In addition to checking viability about a new 2 gpu side by side split frame sli rendering mode specific to low latency VR usage. :D
    lostlogicAuthor
    New Participant
    April 9, 2013
    BTW, I am not running in SLI. The card support SLI; hence, the reason I have 4 DVI outputs and have 4 monitors. You cannot run 4 monitors in SLI (only 2) unless you have 4 video cards (and I only have 2.) At least this is the case for my setup.

    I develop on 4 screens at once and can't get the Rift to play nice with the setup. I am hoping the DVI splitter helps. It works fine when I run it on 2 monitors but not 4.
    Xenovoid - Conquer the universe with thousands of others from your mobile phone or the PC. Currently under development. Rift support planned.
    lordvtp
    Participant
    April 9, 2013
    Using Sli with lots of monitors is pretty tricky indeed! It's definitely a plus though as UDK makes heavy use of your GPU's and the rift is my 5th display! I run 2x 590's so there are your 4 GPUs... the 6x0 cards are supposed to support 3 screens natively per GPU though(only 2 per GPU 5x0 and lower on avg).
    kojack
    kojack
    Honored Contributor
    April 10, 2013
    "lordvtp" wrote:
    the 6x0 cards are supposed to support 3 screens natively per GPU though(only 2 per GPU 5x0 and lower on avg).

    4 screens. I've got a 680 and have 3 monitors (two with dvi, one with display port to dvi adapter) and a plasma tv (hdmi) running from it at the same time.
    (My previous radeon 5870 had the same 4 outputs, but could only run three at a time)
    Author: Oculus Monitor , Auto Oculus Touch , Forum Dark Mode , Phantom Touch Remover , X-Plane Fixer Hardware: Threadripper 1950x, MSI Gaming Trio 2080TI, Asrock X399 Taich Headsets: Wrap 1200VR, DK1, DK2, CV1, Rift-S, GearVR, Go, Quest, Quest 2, Reverb G2, Quest 3
    Anonymous
    April 11, 2013
    "lordvtp" wrote:
    Indeed, though using mirroring with Sli has some penalties...

    Splitter hooked to primary/Sli focus display and.....I currently recommend this configuration when possible.


    With Sli enbled, set the game specific properties to single-gpu and enable Sli-AA modes, v-sync disabled and triple buffering forced. This allows you to leverage your Sli capability while minimizing input latency.

    I plan to drop a line to some contacts I have with the nvidia driver team to see if they are interested in making HMD specific tweaks to the 3dvision system...In addition to checking viability about a new 2 gpu side by side split frame sli rendering mode specific to low latency VR usage. :D


    Thanks for the info on how to set up best for sli, also it will be awesome if you do manage to get NVidia to do the side by side split frame sli rendering, it would be a massive + to having a Sli/NVidia setup, I'm pretty sure it would help there sales even
    Anonymous
    May 1, 2013
    "lordvtp" wrote:
    Indeed, though using mirroring with Sli has some penalties...

    Splitter hooked to primary/Sli focus display and.....I currently recommend this configuration when possible.


    With Sli enbled, set the game specific properties to single-gpu and enable Sli-AA modes, v-sync disabled and triple buffering forced. This allows you to leverage your Sli capability while minimizing input latency.





    I plan to drop a line to some contacts I have with the nvidia driver team to see if they are interested in making HMD specific tweaks to the 3dvision system...In addition to checking viability about a new 2 gpu side by side split frame sli rendering mode specific to low latency VR usage. :D


    any update on if you managed to get in touch with NVidia about doing the 2 gpu side by side split frame sli rendering mode?

    thanks
    ToxicAdam
    Up and Coming
    March 20, 2014
    "lordvtp" wrote:
    Indeed, though using mirroring with Sli has some penalties...


    I plan to drop a line to some contacts I have with the nvidia driver team to see if they are interested in making HMD specific tweaks to the 3dvision system...In addition to checking viability about a new 2 gpu side by side split frame sli rendering mode specific to low latency VR usage. :D


    lordvtp, heard anything from your contacts?
    Show more replies
    Terms & ConditionsAccessibility statement