Question regarding eGPU enclosure purchase
 
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svnryn
(@svnryn)
New Member
Joined: 2 years ago
 

Hi,

I recently stumbled across your community and managed to get a hold of a Lenovo Yoga 730 pretty cheap from Best Buy.

Before I purchase an eGPU enclosure, I wanted to understand a few things.

  • I’m considering the Sonnet Breakaway 350 for $200, but I see the PD is only 15w and the Lenovo brick is 65w. Am I able to have the laptop power supply and eGPU plugged in at the same time or can only one at a time? If only one or the other, should I opt for an enclosure that provides the laptops required wattage or more?

Also any additional pointers or tips would be greatly appreciated.

Thanks!

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

.

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itsage
(@itsage)
Illustrious Member Admin
Joined: 4 years ago
 

You can plug the charger into one port and eGPU into the other concurrently. A better option is to use a USB-C hub with power passthrough. That way you can have the eGPU in one TB3 port while Power Delivery & USB peripherals on another.

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2020 13" MacBook Pro [10th,4C,G] + RTX 2080 Ti @ 32Gbps-TB3 (AORUS Gaming Box) + Win10 2004 [build link]  


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svnryn
(@svnryn)
New Member
Joined: 2 years ago
 

Thank you for the reply! I actually just found a 6 in 1 hub with 100w PD on a lightning deal today and will go ahead with my purchase of the Sonnet 350 enclosure. 

I’ll report back on how it goes. Thanks again.

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

.

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svnryn
(@svnryn)
New Member
Joined: 2 years ago
 
Posted by: itsage

You can plug the charger into one port and eGPU into the other concurrently. A better option is to use a USB-C hub with power passthrough. That way you can have the eGPU in one TB3 port while Power Delivery & USB peripherals on another.

Alright so everything arrived and it's all plugged in. 

1. installed my RX 570 4GB into the Sonnet 350 egpu enclosure 
2. connected the egpu to my 2x BENQ displays and attached the thunder bolt 3 cable to the Yoga 730
3. AMD xconnect loaded and it took a minute for the external displays to come on, but eventually they did
4. downloaded the latest AMD drivers (crimson 18.7.1)

Here's where I'm encountering issues: upon installing the crimson drivers, I'm noticing slight stutter/lag on the desktop while typing, moving the mouse and while watching youtube videos. Any idea why that is?

Also any way for me to test the TB3 bandwidth with an AMD setup? I see that Nvidia builds have been using CUDA-Z. I downloaded and tested a game from my steam library (Dying Light) and the mouse movement was smooth with frame rates around 60-80 on 1080p high. Previous frame rates on my desktop (intel G4560 RX 570) were a bit higher (90+).

Any tips on how to properly test the eGPU setup and how to address the stuttering would be much appreciated.

Thank you!

UPDATE: uninstalled the Crimson 18.7.1 drivers and downgraded to the 18.5.1 drivers. Everything is running smooth now - no more stuttering. I sent an e-mail to Sonnet's support to see if that's a common issue. Will report back my findings. Gonna continue to run various other games I have and benchmarks.  😎

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

.

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