TheMaxXHD

Unfortunately I gave up with trying to make it work. The issue is drivers not playing nicely. Through various of ways including safe mode, I was able to install both intel and nvidia drivers, and have both be recognized by the system as two gpus. The nvidia control panel recognized them as two gpus, giving an option for optimus. However, I could only boot when both devices were disabled through device manager. Enabling the nvidia gpu only led to a black screen, enabling the intel gpu only led to BSOD, and enabling both led to BSOD as well. It is possible that there is a way, I just did not have the time to continue tinkering with it any further. I may continue this "project" soon to see if I can make further progress.

I am extremely close I can just feel it. In my situation the internal display uses intel hd graphics "wired" when I disable NVidia via device manager and reboot, however it only is able to be used as a windows graphics adapter because every time I try to install the drivers for it, it goes to a black screen and the computer reboots, with no evidence of the driver installing at all. That driver is the only thing I believe at this point keeping me from having NVidia optimus. It shows the Microsoft display adapter as the one used for the lcd and not the 650m of which I have the drivers installed for so it would say 650m under display adapter settings if it was driving it. I am a newbie on forums so I messed up attaching the photo yes I know.....

Why hasn't it been achieved before, has nobody attempted the iris pro procedure with Intel hd 4000 MacBook Pro models or has it not worked with Intel hd 4000 models with nvidia gt 650m so far?

Ok, so in theory, if you get Intel hd graphics to activate and accelerate the internal lcd with the nvidia gt 650m disabled via device manager, you basically activated nvidia optimus, therefore when you have a egpu, it will be able to accelerate the internal display as I understand it? If that's so, then I will try the same process used to activate the iris pro graphics used in the thread you listed when I have time this week.

That's what I was afraid of....I wonder if by dragging the windowed application to the internal lcd then going full screen will work (I want to use this egpu for gaming) or if windowed border less for games that support that (very few). Otherwise it seems that in order to truly test the said workarounds that you suggested, i would need to buy the hardware and test it. Just a shame that if I buy $400 worth of hardware to find out that it won't work to my liking is stupid. I will have to think about it some more.

Hello everyone, I'm new to this forum so my apologizes if I screw something up with this post . I'm planning to start my first EGPU project on my MacBook Pro. As I understand firstly, egpu support is more or less plug and play on Windows in efi mode. So, I started by installing Windows 10 in efi on my MacBook Pro. The problems are that since my model was one of the last macs to use bios via boot camp and not properly support efi, I obviously ran into issues. I did finally get it installed but with Intel hd graphics drivers not wanting to install (I will try to get it to install when I have more time this week), and the notorious sound not working issue which up to this point, I don't believe there has been a workaround found by anybody. These issues are fine because I have two drives that I can swap in and out where one is bios and the other is efi. The reason why I'm stating all of this is because I want to have a egpu using the Akito and a gtx 950, and I want it to accelerate my internal lcd display. Is that possible, and if so, does it work on both bios and efi based Windows based installs? Thanks! Note: I haven't bought any of the hardware yet as I want to make sure the egpu will be able to accelerate my internal display. Edit: So Windows 10 Optimus is broken? If that is the case I can put Windows 8.1 on the drives if that's the case Macbook pro specs: MacBook Pro 15" Mid 2012 Non Retina (Model: 9,1) Intel i7 3720qm 16GB ddr3 Intel hd 4000 Nvidia gt 650m 1gb gddr5 Samsung 850 Pro 1TB (Mac OSX and Windows bootcamp bios) OCZ vertex 4 256GB (Windows EFI)