bourbon

I found this video and thought the comments about the high latency and PCIe encoding overheads of TB3 are very interesting. I haven't heard anyone else complain about this before.

Apparently they are using a proprietary solution with two USB type-C cables for a "direct PCIe connection" to get around this.

I have a MBP11,3 and a fresh Windows 10 (EFI) installation. Would really like to test the script to finally disable the dGPU in Windows. From there on my eGPU options should be the same as for those who own a iGPU-only model, correct?

8 hours ago, TYRTlive said:

 

 

 

I just found an actual solution.

 

https://www.reddit.com/r/apple/comments/354vw8/howto_enabling_the_intel_iris_in_bootcamp_650m750m/

 

It works, here is a screenshot from my device http://i.hizliresim.com/yoaA80.png The thing is, you have to flash the EFI everytime you boot via rEFInd. And I'm having some issues with resolution, but I guess it's managable with Intel app.

Interesting! Does this also enable using the internal display with an eGPU after disabling the 650m/750m? in the system manager?

Very exciting news.

Is there any definitive information on whether the TB3 eGPU solution will work on the laptop's internal screen?

The demos in the video only show accelerated applications running on external screens. I'm afraid they might have circumvented the tricky hot-plugging issue by allowing the eGPUs to only output to external monitors. Hope I am wrong!

A thin 15" rMBP with Skylake (which I expect to have iGPU performance on the level of current midrange discrete cards) and a high-end video card docked to it via TB3 for gaming would be absolutely perfect.

Please confirm you can get the iGPU enabled using the process at http://forum.techinferno.com/implementation-guides-apple/8717-%5Bguide%5D-enabling-intel-iris-pro-hd5200-win8-1-15-macbook-pro-gt750m.html . A working iGPU being a requirement for Optimus internal LCD mode to be able to engage.

Yes, 13" MBP can have Optimus accelerated internal LCD since it only have an iGPU. Some users needing to following the following instructions to get 100% success with it: http://forum.techinferno.com/implementation-guides-apple/8558-%5Bguide%5D-macbook-enabling-optimus-internal-lcd-mode.html

Hi Tech Inferno Fan, thank you for being so helpful - I just checked my previous posting on this topic in 2013 and it was also you who responded.

Interesting to see that there's still progress being made regarding the Iris Pro under Windows. From the looks of this thread it is clearly possible to to run Windows 8.1 with the Iris Pro despite having a GT750M machine but the way this was achieved is too complicated for me. I’m positive I could get it to run but the rMBP is my "production" machine and I'd rather not format the entire SSD a few times to make it work.

I might just buy the new 13" or wait for a Skylake 15" model in late summer, this time opting for the iGPU-only model for easier eGPU usage, assuming Apple hasn't locked down the eGPU functionality entirely by then...

Hi, I have a Late 2013 rMBP 15" with a 750m. Is it still impossible to use the internal screen with an eGPU due to the built in dedicated GPU? That was the case the last time I checked but I couldn't find a definitive answer if anything changed.

I am considering switching to a newer Broadwell 13" rMBP, that would allow me to use the eGPU with the internal screen, right?

So to recap, the likely best rMBP candidate for eGPU purposes would be the 15" with the built in 5200m crystalwell iGPU and no built in GT 750m?

I’m very new to all of the eGPU business. I get to buy any "reasonably" specced (< $3000) Macbook Pro and my company will pay for it, so I have a 2.3/16GB/512GB machine with the built in 750m preordered at the moment. I do enjoy gaming at home from time to time, so I’m looking into an eGPU.

The way I see it form the benchmarks, the 750m is not that much faster than the built in Intel 5200m iGPU.

The performance difference between the two is 15% at best, but at the cost of having an additional chip in the machine that adds another 30-ish watts of TDP, with all the additional heat and battery life penalty added.

If I could use a eGPU to boost the graphics performance significantly, I would consider ordering the same machine without the 750m.

The price would end up being the same, but I would (a) have more battery life and less heat under Windows and ( gain the ability to run an eGPU on the beautiful internal screen.

Is that correct?

(please don’t advise me to buy a non-Apple machine… I’d like to but they won’t let me)