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Using Active USB-C 3.1 Gen 2 Cable on Thunderbolt 3 eGPU
 

Using Active USB-C 3.1 Gen 2 Cable on Thunderbolt 3 eGPU  

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VisViva
(@visviva)
Eminent Member
Joined: 3 years ago
 

I happened to purchased few generic USB 3.1 Gen 2 Type-C active cables (1 meter) (it has chip and shielding in connectors ), and it surprised me when I connected it with the Akitio Node and found it works.

Speed test suggests it is slower than the default cable from akitio. (Akitio: 2.487/2.529;  Generic: 1.704/1.728)

I just want to share this information. 

 

 

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


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DanKnight
(@danknight)
AKiTiO Tech
Joined: 3 years ago
 

Interesting find. Can you PM me the link to the cable?

Alias: KnightZero
AKiTiO Employee - Technical Specialist


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ddqp
 ddqp
(@ddqp)
Eminent Member
Joined: 3 years ago
 

can you share the cable link here, it's interesting.

Late Macbook Pro 2016 13' touch bar + AKITIO node + GTX 1050TI 4G Windows


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DanKnight
(@danknight)
AKiTiO Tech
Joined: 3 years ago
 

I've confirmed with engineers that USB 3.1 Gen2 Type-C cables will work if it has the e-Mark. However, you will only get up to 20 GBps. We don't recommend using these cables.

Alias: KnightZero
AKiTiO Employee - Technical Specialist


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VisViva
(@visviva)
Eminent Member
Joined: 3 years ago
 
Posted by: DanKnight

 

I've confirmed with engineers that USB 3.1 Gen2 Type-C cables will work if it has the e-Mark. However, you will only get up to 20 GBps. We don't recommend using these cables.

   

Thanks a lot for confirming!

The 20 Gbps does make sense, as I see an obvious drop in speed.

Just out of curiosity, Is there a software tool for examining thunderbolt 3 link speed (i.e. how to tell 20Gbps from 40Gbps without benchmark) ?

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


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VisViva
(@visviva)
Eminent Member
Joined: 3 years ago
 
Posted by: ddqp

 

can you share the cable link here, it's interesting.

   

The page I brought it from was kinda sketchy, and I am not comfortable promoting it here. (The cable came in plastic film without retail package, and it has no branding or marked certification at all. Plus you will most likely need google translate and freight forwarding)

Since DanKnight has confirmed that it will work with any cable with E-Mark, I would suggest finding one from a confrontable retailer. 

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


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DanKnight
(@danknight)
AKiTiO Tech
Joined: 3 years ago
 
Posted by: VisViva

...

Just out of curiosity, Is there a software tool for examining thunderbolt 3 link speed (i.e. how to tell 20Gbps from 40Gbps without benchmark) ?

   

I'm not aware of any public tools.

Again, I highly recommend to stay away from these generic USB 3.1 Type-C cables with the Node and even other devices. It could result in serious damage to your device and even kill your computer.

 

e-Marked cables are safer, but research if it's actually e-Mark'd before buying. The e-Mark is there to let the computer know if it's a legit certified cable. There were issues in the past before e-Marks where generic cables were poorly made and completely destroyed the computer when connected. (sort of like a USB killer)

Alias: KnightZero
AKiTiO Employee - Technical Specialist


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