[GUIDE] accelerated internal LCD on non-Optimus systems in Windows
 
Notifications
Clear all

[GUIDE] accelerated internal LCD on non-Optimus systems in Windows  

 of  5
  RSS

nando4
(@nando4)
Noble Member Admin
Joined: 4 years ago
 

April-2018: Win10 Spring Creator's Edition (1803) can now provide an eGPU accelerated internal LCD mode without requiring an Intel iGPU or needing a ghost adapter. It allows assigning an app to run with a specified eGPU. More details here & real-life example build on a GT640M 2012 iMac with no iGPU here.



Introduction

Systems without an Intel HD iGPU do not get Optimus accelerated internal LCD mode in Windows. They however do allow *windowed* apps to be started on an external LCD and then dragged to the internal LCD.

The same solution can be applied if using an AMD eGPU, whose Optimus equivalent X-Connect requires even more stringent requirements (TB2/TB3 link, very new AMD cards, Intel iGPU).

Below we show a solution of how to do that without using of a physical external LCD. Instead, a fake external LCD is used to start your app along with management software to drop the window onto your internal LCD.

 

Hardware required - fake external LCD

US$19 Headless Ghost or similar products. A display emulator for digital video interfaces that fits discreetly into your computer.

http://headlessghost.com
http://www.newertech.com/products/hdmi_headless_video_adapter.php

Or DIY one using a 80-100ohm resistor. From here and implemented using 'duplicate displays' here.

PICTURES:

  • How to build you DVI dummy display using a 80-100 ohm resistor on C2/C5 pins of the DVI connector!

 

 

Internal display working (no need for external display - Windows)

Posted by: enjoy

So the deal with this is, any program started on the 'external screen' (being powered by the eGPU) will use the eGPU. So what you'll want to do is set the fake display as your main display. Then anything started on that display will be running from the eGPU. Now there is a little limitation here; only games that run in windowed mode will work (which is most). You'll want to start the game on the fake screen in windowed mode and then drag it over to your internal display.
So how do you grab from a display you can't see?

Well, I found this free program called Dual Monitor Tools (it's free right here: Dual Monitor Tools - Home ) and what you can do in this program is set a keyboard shortcut to move the selected window over to the other display. So you click on the game in the task bar, and hit the shortcut you assigned and it'll pop over to the internal screen, but because it was launched on the fake screen, it'll be powered by the eGPU.

Simple as that.

A good tip is to have the internal display set as default first, launch the game, go to options and set the game to windowed mode now, then quit and relaunch after you've changed the fake screen as your primary. Otherwise you might not be able to switch it with the shortcut while it's in full screen.

 

Use the Borderless-Gaming app to make Windows apps appear like full screen ones:
https://github.com/Codeusa/Borderless-Gaming

 

macOS: using accelerated internal LCD (by goalque)

See How to: eGPU-Accelerated Internal Display in macOS at:

https://egpu.io/how-to-egpu-accelerated-internal-display-macos/

 

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table

 
2015 15" Dell Precision 7510 (Q M1000M) [6th,4C,H] + GTX 1080 Ti @32Gbps-M2 (ADT-Link R43SG) + Win10 1803 [build link]  


MýnÆnglishTáwk, ariksaja, itsage and 1 people liked
ReplyQuote
survfate
(@survfate)
Eminent Member
Joined: 4 years ago
 

AMD gpu internal mode can be done with this method too am I correct?

EDIT: I have to add: nearly every game nowaday can be play with window mode thanks too stuff like dxwnd / D3DWindower

2012 15" ASUS K55VJ (GT635M) [3rd,2C,M] + GTX 1050 Ti @ 4Gbps-mPCIe2 (EXP GDC 8.4) + Win10 [build link]  

ReplyQuote
nando4
(@nando4)
Noble Member Admin
Joined: 4 years ago
 

Yes, AMD eGPUs with no equivalent Optimus mode (eg: X-Connect) can use this Windowed program shuffling idea too.

Posted by: survfate

 

AMD gpu internal mode can be done with this method too am I correct?

EDIT: I have to add: nearly every game nowaday can be play with window mode thanks too stuff like dxwnd / D3DWindower

   

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table

 
2015 15" Dell Precision 7510 (Q M1000M) [6th,4C,H] + GTX 1080 Ti @32Gbps-M2 (ADT-Link R43SG) + Win10 1803 [build link]  


ReplyQuote
dream3
(@dream3)
Estimable Member
Joined: 4 years ago
 

Nando can you make a guide for that to work in macOS with mbps with iGPU only?

MacOS: 15" Retina Macbook Pro 2015 Iris Pro only
Windows 10: Tornado F5 laptop with discrete GTX 1060
eGPU: GIGABYTE RX 580


ReplyQuote
nando4
(@nando4)
Noble Member Admin
Joined: 4 years ago
 
Posted by: dream3

 

Nando can you make a guide for that to work in macOS with mbps with iGPU only?

   

I've asked some Macbook equipped colleagues to have a look at it. The sticking point being how to launch your app on your fake LCD and then snap it to to appear on your internal LCD.

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table

 
2015 15" Dell Precision 7510 (Q M1000M) [6th,4C,H] + GTX 1080 Ti @32Gbps-M2 (ADT-Link R43SG) + Win10 1803 [build link]  


ReplyQuote
survfate
(@survfate)
Eminent Member
Joined: 4 years ago
 

It seem like EXP GDC already having something like the Headless Ghost for a while now, but only for DVI:

https://world.taobao.com/item/42235880540.htm#detail

2012 15" ASUS K55VJ (GT635M) [3rd,2C,M] + GTX 1050 Ti @ 4Gbps-mPCIe2 (EXP GDC 8.4) + Win10 [build link]  

nando4 liked
ReplyQuote
Rayhan96
(@rayhan96)
Active Member
Joined: 3 years ago
 

pls help, i am a little confused. Does this mean i can receive 90% of the GPU power for the internal display? (like it would if i plug in an external monitor)

I have an xps 13 and been holding out on an akitio egpu because of my limited experience. I plan to use a 1050ti inside to make life easier, and i think what you have here could help me.

I hear from your previous articles that this laptop has 2 lane and that would restrict the internal display to use 50% of the GPU only, so if i could get it to use 90% you can see how it would really help out

The thing is all other tutorials seem to do it for Mac and not the laptop i have. Are there any links i could follow to help me out.

If this doesn't work, would playing on the xps internal display with 1050ti be worth it and competitive enough despite the 50% drop?

2016 13" Dell XPS 13 9360 [7th,2C,U] + GTX 1050 Ti @ 16Gbps-TB3 (AKiTiO Thunder3) + Win10 [build link]  

ReplyQuote
vava726
(@vava726)
Estimable Member
Joined: 3 years ago
 

I am a skull nuc owner and I am able to benefit of nvidia acceleration on skull video output even if there is nothing connected to the video ports of my gtx 980 connected with an akitio thunder 3. ( it was an experiment to evaluate the gap of performance between this configuration and the direct connection to the gtx980).

I think my situation is similar to the laptops' one.

Let me know what do you think about it.

How 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

ReplyQuote
ybodhanya
(@ybodhanya)
Eminent Member
Joined: 4 years ago
 

@nando4 Is the performance drop found when using the internal LCD with Optimus also present with this method?

Thanks

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

ReplyQuote
rmvz3
(@rmvz3)
Trusted Member
Joined: 3 years ago
 

In fact, I'm using the ghost adapter trick (with a hdmi to vga adapter and 3 resistors) without need of any extra software. Just setting the displays to clone mode. The games need to be running on window mode (if you change to full screen they simply won't update their view but you can change them back to window mode and they will not crash)

Even better, Windows seems to remember the settings and it changes the layout to extended when I use my cinema display (display port) as external monitor and duplicate screen when I use the fake hdmi adapter.

If only I could boot windows without having to try dozens of times it would be great  8_(

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

ReplyQuote
 of  5