Physically, I know both PCIe Slots are a part of the same PCIe root complex - I am able to run two Quadro P2000s in TCC and perform direct (dev-to-dev) cudaMemcpys - confirmed using NSIGHT, yes I had a 3rd GPU for display. I consistently get silky smooth 60fps on all of my games at 4K resolution with all video settings maxed out.Īs a test, I ran a 3DMark benchmark to see how much improvement this setup provides. When I go to NVIDIA Control Panel, the SLI option is not present, only the PhysX sub-menu exists. Now all of your games will just work in SLI mode regardless if SLI native support was not intended. Say bye-bye to spending countless hours in nvidia Profile Inspector looking for the settings to get your SLI profile to work for your game. And voila, I just doubled the in-game performance of my GPUs (when compared to previous SLI results)! What you are doing is here is forcing GPU1 to render the right side of the screen only and GPU2 to render the left side of the screen only.įinally, I enabled Surround Spanning Display in the nvidia control panel and set it up to match how my video outputs are connected to my monitor (GPU1 on the right, GPU2 on the left). Both screens together add up to 3840x2160. It should see each GPU and properly recognize each with no error codes. First double check in Device Manager, to verify that both cards are showing up properly. I then opened up nvidia control panel and changed the resolution for each monitor to 1920x2160 (this means the left half of the screen is 1920x2160 and so is the right side). If you have 2 or more GPUs and there is no 'SLI Configuration' in the Nvidia Control Panel under 'Set SLI and PhysX' configuration, this could be caused by a number of different problems. Next, I accessed monitor's menu enabled PIP and set it up so that GPU1 goes to the right side and GPU2 goes to the left side. Then I connected both HDMI cables to the same 4K monitor. You have to see it to believe it! (Btw, I am still blown away by this simple solution!)Īs a solution, I decided to ditch the display port cable (between GPU and monitor) and instead connect an HDMI cable to each card.
With the method I outline below, you will effectively double the in-game performance of your SLI setup. Your NVIDIA display driver being outdated or damaged may have led to the Control Panel missing. However, this method is not very efficient and it still leaves much untapped potential power. Like most people, I installed two GPUs, an SLI bridge and enabled the SLI mode from within the nvidia control panel. HOW TO GET MORE OUT OF YOUR SLI SETUP (HINT YOU ARE DOING IT ALL WRONG).