2016 Macbook Pros and eGPUs in Apple eGPU discussion Posted November 20, 2016 8 hours ago, RB.mac said: Thought I'd give an update on my findings... My original testing was with non-touchbar base MBP13, a razer core, and gt670 and 980ti. My interest is only with gaming in bootcamp at this point, so all that follows is in windows. I had success with the gtx670 by installing all the standard stuff (win updates, synapse, razer gpu switcher) before connecting the core. Then shutdown, connect core (which had external monitor), install nvidia drivers. I could only get acceleration by launching on external monitor and dragging to internal display. I could never get this to work without the extgernal display being connected. Doing the same install process with my 980ti resulted in the error 12, which it seems may have had a fix based on recent posts. Since then, I ended up returning that base MBP13 and getting a maxed MBP13 with touchbar. I followed the same approach as described above and and had no error 12 but I also am now able to use the internal display only. I don't know why it's behaving differently but this is working consistently through internal display, which is what I needed. I do have an "Unknown USB Device (Device descriptor request failed) item in device manager with "Windows has stopped this device because it has reported problems. (Code 43)" but I don't know what this is. USB ports on the core work fine but haven't tested ethernet. Only downside is that I can't get audio through my internal speakers or headphones when razer core is connected. I have the internal or headphones set as default and the windows sound config is illuminating the sound meter next to the internal speakers but nothing is coming through at all. It also doesn't even detect that headphones have been plugged in. THe only way I can get audio back through internal speakers is to shutdown and disconnect core before restarting, which isn't much of a fix... Any thoughts on the audio issue? Exact steps for my latest install procedure attached in case helpful to others. I initially installed without nvidia HD audio drivers because didn't need audio through external display but I later did a clean install and added them due to the audio issues I had, which didn't help. Try disable and then enable sound card: "Cirrus Logic CS8409 (AB 54)" under "Sound, video and game controllers".