Boykodev

21 hours ago, Dazmat said:

 

I'm using the Zodiac 970

I remember reading somewhere you need a card made by EVGA for maximum compatibility with eGPU.

6 hours ago, Dazmat said:

I have windows 10 on boot camp and can't get the video card to work with laptop screen. Works fine if I hook up an external monitor. Anyway to get it to work without one?

What graphics card do you have?

I have EVGA GeForce GTX 750Ti and the only thing I did to get it working with internal screen, is just installed the latest drivers from the EVGA website.

7 hours ago, H658tu said:

 

Apart from the restart, you could also remove the magnet from behind the display bezel. This triggers the reed-switch that tells the system 'display = closed'. Of course, the backlight would remain on (and draw a little power), but at least there'll be no more shenanigans with any software, regardless os, as to what 'consumer-friendly' power saving features to use when there's no internal screen in a view-able position.
 

 

I am not so hardcore to tear apart my MacBook..))

I guess there's no software way to disable it?

Perhaps I do have this "Optimus" activated already.

Just tried to connect eGPU without external display and it worked!

But what about "Sleep" mode?

Is it possible to put MacBook to sleep when eGPU is connected?

24 minutes ago, devild said:

No, just install nvidia drivers for your gtx750ti and then switch to "Show desktop only on 1 display" in settings.

I wish it would be so easy.

- switching to "Show only display 1" results in lagging of all system animations.

The same effect I have when I close the lid and eGPU becomes the only active display.

I have already created a discussion trying to resolve it:

Another thing is that I don't have "Sleep" option when eGPU is connected, which is pretty inconvenient.

I don't think I have this "Optimus" activated already...

12 minutes ago, devild said:

Hey man,

Is your mbp late 2013 or mid 2014?

If it's late 2013, Optimus (output from eGPU to internal display) should work OOB in windows 8.1/10.

If it's mid 2014, Optimus will work OOB if you install windows with BootCamp 5.1.5640.

I am pretty sure it's late 2013. Don't have it at hand right now to double check though.

So what should I do to make it work? Can I use the guide on the first page of this topic?

@ssamydla

Thanks for the explanation!

Is your set up running on Windows 8.1?

On the first page of this topic I saw a good guide for making "Optimus" work with Windows 8.1

Is there a similar guide for Windows 10?

12 hours ago, bcw448 said:

I think this lagging issue also happened to my eGPU setup before.

 

Try to "Restart" your laptop when the lid is closed and let the video driver load completely and now you should be good to go.

 

This restarting method works for me and hope it also works for your eGPU setup.  

Your "Restart" method actually worked for me the next time.

Device manager had both of adapters listed.

Not very convenient to do an additional restart tbh, but it works. Thanks!

Can somebody with experience in this area please explain me what is "Optimus"?

As far as I understood it will allow going to Sleep mode with eGPU connected?

Correct me if I am wrong, "Optimus" is used if you need to use internal display with eGPU.

Will "Optimus" provide any performance benefits?

My configuration is:

- MacBook Retina 13" Intel Iris 5100

- EVGA GeForce GTX 750Ti

- Windows 10

Can I set up "Optimus" with this configuration and if yes, then how?

10 hours ago, bcw448 said:

I think this lagging issue also happened to my eGPU setup before.

 

Try to "Restart" your laptop when the lid is closed and let the video driver load completely and now you should be good to go.

 

This restarting method works for me and hope it also works for your eGPU setup.  

If I restart it with a lid closed, animation goes smoothly for a few minutes, but then its all lagging again.

But sometimes when system loads, for some unknown reason eGPU becomes the only visible "Display adapter" in the Device manager.

Then it never lags, neither with closed lid or opened lid. The downside is that because internal card wasn't detected, I can't see anything on the Macbook's screen itself.

18 hours ago, bootleg2580 said:

You can try changing what function happens when the lid is closed, (i.e) do nothing, sleep, hibernate etc) or there should be an option on your display itself on your comouter like 1 1&2 or 2 just use 2 not 1&2

"what function happens when the lid is closed " is already on "do nothing".

If I choose "Show only on 2" the effect is identical if I close the lid - eGPU becoming the only display, but lagging badly.

Is there a way to use eGPU on external display with lid closed in Windows 10?

Because if I close the lid now, the system starts lagging badly.

Even simple animations like opening a folder or making a selection with a mouse are dramatically slow.

How to eliminate this performance drop, when closing a lid?

5 hours ago, simon753 said:

I've been thinking about that kind of power supply as well, could you tell me about how did you manage the 6pin and 8pin cable with that? I think you can only use one power sources to prevent GND loop right? Otherwise I can just simply switch my Molex to barrel plug to this 12V only power supply and use my original 850W power supply to power the gpu on the other side by 6pin and 8pin plug, sould I ?

In my case the GPU I used (EVGA GeForce GTX 750Ti) doesn't require additional power. So I only needed to supply 12V to barrel plug.

I don't really know how can you use the 6pin and 8pin cable with this power supply. But if they all use 12V - I think its possible.

Yeah, you can only use one power source, I don't know the true reason why, but everyone keep saying that, so it must be true! 

On 7/28/2016 at 4:45 PM, simon753 said:

But actually I have a 850W power supply, and the problem is still there, I would try to do the tricks you told me, fingers crossed

Got myself a 400W power supply that outputs 12V only. It looks something like this:

https://www.amazon.com/TOOGOO-Switching-Switch-Supply-Driver/dp/B00L316X7E

Works fine. No more freezes. The only problem is that its fan is pretty loud and distracting.

47 minutes ago, simon753 said:

I have the same problem, you can try underclock your cpu a bit and do benchmark again to see if it would freeze or not, if it does just underclock a bit more. 

I will tell you what I figured so far. This is definitely a power problem.

I tested the voltage that goes to the eGPU. The moment I launch a 3D app - it drops from 12v to 11.2v

Probably the reason that 450W power supply can't handle the load, is this:

https://brazenartifice.wordpress.com/2011/12/26/atx-power-supply-5v-load-resistor-for-better-12v-regulation/

Let me know if you managed to do this "5V resistor" trick.

I myself don't want to bother by this and be getting a new power supply tomorrow, that doesn't require these manipulations.

1. GPU doesn't have a 6 pin on it. Actually this particular card does not require additional power.

2. Yes, I applied the paperclip trick. Fan on PSU is working.

3. To power both Akitio and GPU I took power from Molex connector (4 pin) directly to Akitio's barrel plug slot.

I have a setup almost identical to this build:

1. AKiTiO Thunder2 PCIe Box
2. EVGA GeForce GTX 750Ti with G-SYNC Support 2GB GDDR5 128bit, Dual-Link
3. GameMax GM450 OEM (GM-450) - 450W power supply
4. Macbook Pro Retina 13 (2013)

I installed the latest drivers from the EVGA website. I connected external display via HDMI and can see my card in Device Manager.

The problem is under a smallest load (starting a game or Unigine Heaven test), the whole system freezes, picture from the external display disappears, although fan on graphic card is still going.

Any ideas how this can be fixed? I took power from the Molex connector. Could that be the problem?