You just have to make sure you get the right GTX 1070 as they aren't all the same. The MSI GTX 1070 is considered the best version (quality and performance) but it has a few extra bits on the PCB which make it harder to physically install in some laptops. There usually needs to be some modifications made to the chassis, MXM port and heatsink to get it to fit. Because of this, most people go for the standard form factor 1070. This is the MSI card. You'll notice the extra piece sticking out at the top and also the entire left edge is wider that the pin section. Best to stay away from this one if you want an easier time [IMAGE] This is the standard form factor GTX 1070. This will fit in your R4 without any issue [IMAGE] If you have the 120Hz display then you will get the best performance. If you have the 60hz display then you can still run the card but only in SG Mode (Optimus) and it loses some performance using Optimus.  Unfortunately the forum at NotebookReview was shut down a few days ago and that was the best place to discuss these old laptops. A few other forums have popped up from the ashes of NBR so you can check out [URL] and ask some question there if you like.     
Hello!  I would like to ask if the NVIDIA GeForce GTX 1070 Mobile video card would fit in the Alienware M17x R4 laptop?  If it wouldn't, than what would be the best option to upgrade for gaming? 
M17x R4, would a GTX1070 video card fit?