USB ports and eGPU off of the same TB3 port (IE Core X Chroma)?
 
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USB ports and eGPU off of the same TB3 port (IE Core X Chroma)?  

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DankRaft
(@dankraft)
New Member
Joined: 3 months ago
 

I've been researching eGPU enclosures lately and initially one of the things I wanted in my eGPU is to have external USB A ports so I could connect my mouse and keyboard to one (ie Razer Core X Chroma). However, it seems a lot of people are having bandwidth issues with those kinds of enclosures, to the point of even mice and keyboards jittering (and not just with the Core X Chroma... although mostly with the Core X Chroma). Are those issues commonplace? Should I invest in a setup like this or get a separate USB hub?

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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sunzoo888
(@sunzoo888)
New Member
Joined: 1 month ago
 

@dankraft

I thought you might be interested in my thoughts. Systems spec below:-

Razer Blade Stealth 13 2019 i7 1065G7 16gb 512GB GeForce GTX 1650 Ti Max-Q
Razer Core X Chroma with Asus ROG Strix, rtx 2080ti O11G gaming
Huntsman Elite Keyboard
Mamba Elite Mouse
Razer Laptop Stand Chroma

Razer Nommo Chroma

MSI Optix G27C2 gaming monitor

1) I originally bought a MSI 2080ti Gaming x Trio but because it has 3 pci cable requirement, even with a splitter, it did not work and I had to return and eventually went with Asus ROG Strix with 2080ti which has so far not given any problems (don't mess too much with nvidia display settings, maxing out on performance on certain settings resulted in power issues). The T3 connection clearly has some bottlenecks for power requirements and if too much goes through connection, clearly something is giving in order to allow GPU to work unhindered.

2) Originally I plugged in my Chroma stand into the eGPU usb ports and there were Keyboard and mouse freezing and laggy issues. I solved this by plugging the Chroma stand directly into one of my laptop usb. The Core X Chroma does not seem to like hubs. However, I did note that even if I plugged my mouse directly into egPU it still had problems. So it's not just hubs. It seems like anything with active connection (although for some reason SSD works fine) is not good when directly connected to eGPU.

3) With experimentation, I discovered the eGPU USB ports do work but only with certain devices. My SSD hard drive was fine and so were my Nommo speakers when plugged directly into eGPU. It does not seem to like any kind of hub plugged into it, including my monitor which also has a couple of USB ports.

4) You need to use external monitor. However, I do use an extended display but this can cause some stability issues, especially with games requiring full screen not windowed. You can improve the performance of the GPU by using only external monitor, as a result, not requiring data from eGPU to need to be channeled back to the laptop.

To summarise, you need to be somewhat careful in terms of what you connect to eGPU, however certain things still require direct connection to the laptop USB in order to bypass some of these issues, such as hubs, mouse, keyboard. The eGPU doesn't like Laptop stand, even though it is a razer (you would have thought they should have sorted the issues here)

 

 

 

 

Razer Blade Stealth 13 2019 i7 1065G7 16gb 512GB GeForce GTX 1650 Ti Max-Q
Razer Core X Chroma with Asus ROG Strix, rtx 2080ti O11G gaming
Huntsman Elite Keyboard
Mamba Elite Mouse
Razer Laptop Stand Chroma
Razer Nommo Chroma
MSI OPTIX G27C2 27" VA 144Hz Gaming Monitor connnected to Razer Core X Chroma with Display Port


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