Here you can enable, or disable CrossFire. To double check it, open the Catalyst Control Center, select the Gaming tab and select AMD CrossFire. Here you can check that SLI is enabled, adjust Nvidia Surround if you’re using multiple monitors, or assign one of the GPUs as a PhysX processor.ĬrossFire – CrossFire should also automatically enable once the driver has been installed. You can double check this though by entering the Nvidia Control panel and selecting the Configure SLi, Surround, PhysX tab. SLI – SLI should automatically enable if the setup is correct. With the hardware in place, it’s time to head into Windows and install the latest Nvidia or AMD driver. You may want to grab the latest beta driver, as these will often have the most recent SLI or CrossFire profiles included. You can force these slots to use PCI-E 3.0 (Gen 3) here if you wish, as this can sometimes improve stability. You should see a screen which matches that below, with both the top PCI-E slots running at 8x. Navigate to the Advanced tab, and select System Agent Configuration, followed by the NB PCIe Configuration. Head into the Maximus V Formula’s UEFI BIOS - you should be in Advanced Mode by default. With the cards fitted into the right slots, powered up and connected via the required SLI/CrossFire bridge, there’s still a couple of things left to check. If you plan to use three monitors, be aware that AMD requires you to connect the third monitor via DisplayPort, whereas Nvidia’s model favors three DVI connections.įor Nvidia configurations, refer to this guide. However, be advised that certain outputs will be disabled when using multi-GPU setups refer to Nvidia or AMD’s requirements pages to make sure your setup will work. If you’re using a single display, connect it to the output of the top-most card. The second connector is used when more than two cards are added in 3-way and 4-way multi-GPU. Just pop on the bridge between the two cards as follows. The SLI and CrossFire connectors do not match, so you can’t accidentally fit the wrong bridge.ĬrossFire cables are provided in AMD graphics card boxes, whereas SLI cables are provided with the motherboard instead. On both AMD and Nvidia graphics cards you can plug in the cable to either set of pins, with the cable aligning in a straight line from top to bottom. With both graphics cards fitted and powered, it’s time to fit the SLI or CrossFire bridge cable (depending on whether you’re using Nvidia or AMD GPUs respectively).This will result in the top slot with 8x lanes of bandwidth, however the bottom slot only offers 4x bandwidth, limiting performance. While the added space between the two cards might seem helpful for cooling, DO NOT fit the second card into the third (lowest) PCI-E slot.The board is laid out to allow a clear gap between the top and bottom GPU even if you’re using a graphics card with a triple slot cooler, such as some ASUS DirectCU II models. Fitting a second graphics card to the Maximus V Formula is easy just slot it into place in the second (middle) PCI-E 3.0 slot.
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