I watched this Eurocom video to understand what's going on with your model: The height of the M.2 slot is just too high compared to the GPU when held in place and so an MSI 1070 would be a bad idea considering you would have to destroy the conflicting M.2 socket and that's bad for resale value. Nor will you be able to add in a slot if you wanted to down the road. I'd rather you keep the M.2 slot. Judging from your responses you're not as savvy with electronics so the idea of desoldering the M.2 slot might not be a good idea. The MSI 1060 is a safer bet in terms of card fit over the MSI 1070. Can't even consider the Gecube 1070s because of their power delivery flaw and with the money you would have paid for an MSI 1070 you can buy an MSI 1060 + an M.2 drive, so that's a better value proposition I think. Here's a quick photoshop render I did of how the MSI 1060 would look in the P775DM1: I am under the assumption that the heatsink is 980DT and 980M compatible and this basic visualization leads me to believe the heatsink should fit just fine without any modification. Worst case: you may need to sand down the bend just below where the 3 power chokes are, much like the image below in the mod job I did for my 1070 upgrade. Overall I think the case for a 1060 upgrade in a P775DM1 is plausible. Honestly I am surprised that no one else, including Eurocom, have tested to confirm this works or not. Sure you may be the first here to do so if you're daring to try and you got the cojones to spend the money on it. EDIT: The only thing you will need to check is if the laptop will function when the 1060 is installed without drivers first. If it does then it's a success already.