I have recently (a few days ago), upgraded to the MSI X299 Raider motherboard. I did an "in-place" upgrade; I changed only the necessary components: motherboard, RAM, and CPU. Overall the process went well. But, when I started playing non-Sli games, I noticed Afterburner was showing my second GPU doing all the primary rendering. This prompted me to open Nvidia control panel, and to my surprise, it was showing my monitor connected to the 2nd GPU - of course it isn't - it is connected to my 1st GPU (the one nearest to the CPU and the top most PCI-e slot). Since I have never seen or heard of this issue, I hoped there would be an easy tweak to correct it. However after submitting a support ticket to MSI, I was told the following: "Ok after doing some checking, it turns out that this is normal for our X series Intel chipset..." There you have it then, the chipset has oriented my 2 Sli graphics cards in reverse order. Let me be quick to add, the overall performance of my new X299 setup is truly great! I gained a five thousand point increase in the Fire Strike benchmark, and almost a three thousand point increase in Time Spy - and that with the lowly i7 7800X CPU. Also, (thankfully) Windows 10 is running stable too. So looking at the big picture, I really have no complaints about my upgrade - maybe a future BIOS update will correct the graphics card location issue.