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eGPU and external SSD (Windows 10 Boot C...
 

eGPU and external SSD (Windows 10 Boot Camp)  

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FustyFred
(@fustyfred)
Active Member
Joined: 6 months ago
Posts: 10
Jan 9, 2019 9:51 pm  

What are the limitations -- if any -- to running both an eGPU and external Windows Boot Camp on a MacBook Pro? Windows 10 Boot Camp is on a fast external SSD (G-Drive external SSD USB 3.1 Gen 2) and is plenty fast enough. What I'm wondering is, will I bottleneck the Thunderbolt controller by running both the eGPU and Windows 10 SSD? I know you have to disable the one side of the MacBook Pro so Windows can allocate enough resources to the eGPU... so I'm wondering how that affects an external SSD running Windows.

There's not enough room on the internal drive for Windows 10 and Games, so external SSD is my only option.

Thanks for your expertise guys!

This topic was modified 5 months ago

Apple 2016 15" MacBook Pro | LG 27UK600-W 27" 4k IPS Monitor | Logitech G512 Mechanical Keyboard | Logitech G600 Mouse | G-Drive USB 4TB 7,200 RPM External Drive | G-Drive mobile SSD 500 GB External Drive | Focusrite 2i4 2nd gen USB Audio Interface | Alesis M1 Active Mk2 Studio Monitors


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theitsage
(@itsage)
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Posts: 4020
Jan 10, 2019 1:33 am  

@fustyfred Which MacBook Pro do you use? Depending on the model and eGPU, you may not have to disable PCI controller/root port.

Best ultrabooks for eGPU use

eGPU enclosure buying guide

94 external GPU build guides


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FustyFred
(@fustyfred)
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Joined: 6 months ago
Posts: 10
Jan 10, 2019 1:34 am  

It's the 2016 15" which I've unfortunately read requires you to.

***edit*** regarding overwhelming the bandwidth of the ports... can anyone answer my original question?

This post was modified 5 months ago

Apple 2016 15" MacBook Pro | LG 27UK600-W 27" 4k IPS Monitor | Logitech G512 Mechanical Keyboard | Logitech G600 Mouse | G-Drive USB 4TB 7,200 RPM External Drive | G-Drive mobile SSD 500 GB External Drive | Focusrite 2i4 2nd gen USB Audio Interface | Alesis M1 Active Mk2 Studio Monitors


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theitsage
(@itsage)
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Jan 10, 2019 1:38 am  

Each Thunderbolt 3 controller hosts two TB3 ports and can handle up to 40Gbps. Intel caps TB3 enclosure bandwidth at 22Gbps so there's room for an external 10Gbps SSD on the second port.

Best ultrabooks for eGPU use

eGPU enclosure buying guide

94 external GPU build guides


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FustyFred
(@fustyfred)
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Posts: 10
Jan 10, 2019 1:43 am  

Ok, that's good to hear. My G-Drive mobile SSD is only capable transfer rates up to 560 MB/s so 10 Gb/s should be more than enough. Thanks for the info!

Apple 2016 15" MacBook Pro | LG 27UK600-W 27" 4k IPS Monitor | Logitech G512 Mechanical Keyboard | Logitech G600 Mouse | G-Drive USB 4TB 7,200 RPM External Drive | G-Drive mobile SSD 500 GB External Drive | Focusrite 2i4 2nd gen USB Audio Interface | Alesis M1 Active Mk2 Studio Monitors


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mac_editor
(@mac_editor)
Noble Member Moderator
Joined: 2 years ago
Posts: 2089
Jan 10, 2019 3:56 am  

@fustyfred you could keep only your game library on the external SSD - this is how I do it. IIRC Windows on external SSDs have trouble updating, etc. (though I suppose that’s a good thing haha).

This post was modified 5 months ago

purge-wrangler.shpurge-nvda.shset-eGPU.shautomate-eGPU EFI Installer
----
Troubleshooting eGPUs on macOS
Command Line Swiss Knife
eGPU Hardware Chart
Multiple Build Guides
----
Current: MacBook Pro RP560X + 480/R9 Fury/Vega 64 | GTX 780/1070
Previous: 2014 MacBook Pro 750M + 480/R9 Fury | GTX 780/980 Ti/1070


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theitsage
(@itsage)
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Jan 11, 2019 8:51 pm  

I'd second what @mac_editor recommended. I have always partitioned 50GB for Windows in Boot Camp Assistant then connect an external SSD that contains my Steam game library. This external SSD works with different Windows 10 machines too. It's more reliable this way in my observation.

Best ultrabooks for eGPU use

eGPU enclosure buying guide

94 external GPU build guides


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FustyFred
(@fustyfred)
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Joined: 6 months ago
Posts: 10
Jan 11, 2019 11:52 pm  
Posted by: theitsage

I'd second what @mac_editor recommended. I have always partitioned 50GB for Windows in Boot Camp Assistant then connect an external SSD that contains my Steam game library. This external SSD works with different Windows 10 machines too. It's more reliable this way in my observation.

Thanks, I'm going to stick with it the way it is and see how things go. I don't really have the space to spare, it's a 256GB internal.

Apple 2016 15" MacBook Pro | LG 27UK600-W 27" 4k IPS Monitor | Logitech G512 Mechanical Keyboard | Logitech G600 Mouse | G-Drive USB 4TB 7,200 RPM External Drive | G-Drive mobile SSD 500 GB External Drive | Focusrite 2i4 2nd gen USB Audio Interface | Alesis M1 Active Mk2 Studio Monitors


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(@keith_walls)
Eminent Member
Joined: 2 years ago
Posts: 34
Jan 28, 2019 9:57 pm  

I have successfully installed the latest Windows 10 version on an external SSD, and the nVidia 1080 Ti eGPU just works. Works perfectly. Now if Apple would get their act together on doing this with Mojave...

Computer is iMac Pro.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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(@chris_hanisch)
New Member
Joined: 5 months ago
Posts: 1
Jan 30, 2019 2:41 pm  

Hi 🙂

i have a about my MacBook Pro 15“ 2018. I have already run windowstogo in my external ssd. Now i Want to Connect the eGPU . Can i connect my eGPU without deactivating PCI Controller ? And if I had to desctivate pci Controller which Slot Can i use to connect the eGPU with my MacBook ? Sorry for my english 🙂

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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