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How far are we from GPUs with USB-C and what will be the impacts?
 

How far are we from GPUs with USB-C and what will be the impacts?  

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motoic
(@tsh3721)
Trusted Member
Joined: 2 years ago
 

I've heard that this is completely going to change things, is that true?

2018 15" MBP w/ Radeon Pro 560x
Nvidia GTX 1070
Akitio Node
32" LG 32UD99-W
macOS Mojave, Bootcamp Windows 10


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chinsteig
(@chinsteig)
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Joined: 2 years ago
 

There are already cards with USB-C

https://www.amazon.com/NVIDIA-GEFORCE-RTX-2080-Founders/dp/B07HWMDDMK
https://www.nvidia.com/en-in/geforce/graphics-cards/rtx-2080-ti/

Mid 2012 15" MacBook Pro > Thunder2 > GTX 1070 > 34" 2560x1080 Ultrawide
Mid 2017 15" MacBook Pro > Thunder2 > GTX 1070 > 34" 2560x1080 Ultrawide


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motoic
(@tsh3721)
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Joined: 2 years ago
 

I know that a few exist but I mean from it becoming actually common and not just on one card.

2018 15" MBP w/ Radeon Pro 560x
Nvidia GTX 1070
Akitio Node
32" LG 32UD99-W
macOS Mojave, Bootcamp Windows 10


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OliverB
(@oliverb)
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Joined: 10 months ago
 

It doesn't have hardly an impact, why should it have one?

2018 15" MBP & 2015 13" MBP connected to RTX2080Ti GTX1080Ti GTX1080 Vega56 RX580 R9-290 GTX680


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motoic
(@tsh3721)
Trusted Member
Joined: 2 years ago
 
Posted by: OliverB

It doesn't have hardly an impact, why should it have one?

I don't think this is correct. I heard rumors that it supports almost 8k, among other things. Also: power delivery. 

This post was modified 5 months ago

2018 15" MBP w/ Radeon Pro 560x
Nvidia GTX 1070
Akitio Node
32" LG 32UD99-W
macOS Mojave, Bootcamp Windows 10


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Eightarmedpet
(@eightarmedpet)
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Joined: 3 years ago

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B Wesley
(@b_wesley)
Eminent Member
Joined: 5 months ago
 

You're wanting USB-C port for a GPU *output* to an 8K display *input* right?

Pardon the silly question, but 90% of the time when someone says "USB" and "eGPU" in the same post it means ... the other thing. The impossible thing. 🙂

Sys1: MITX Desktop in InWin Chopin
i5-4570 + 1060 6GB + PCIe 1x adapter (over USB3.0 copper)
Sys2: Dell 15 Latitude 3542
i3-4030U + 1060 6GB + mPCIe adapter for PCIe 1x (over USB3.0 copper)
Sys3:Dell 14 Inspiron E5450
i7-6500U + 1060 6GB + NGFF M.2 A/E --> mPCIe adapter
+ mPCIe adapter for PCIe 1x (over USB3.0 copper)
Sys4:Pending


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motoic
(@tsh3721)
Trusted Member
Joined: 2 years ago
 
Posted by: Eightarmedpet

I'm still waiting for a card with TB3... 2 years now.

Any particular reason why?

You're wanting USB-C port for a GPU *output* to an 8K display *input* right?

Pardon the silly question, but 90% of the time when someone says "USB" and "eGPU" in the same post it means ... the other thing. The impossible thing. 🙂

 

I'm actually wondering how it will change affect / change eGPU boxes and what the benefits will be.

2018 15" MBP w/ Radeon Pro 560x
Nvidia GTX 1070
Akitio Node
32" LG 32UD99-W
macOS Mojave, Bootcamp Windows 10


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joevt
(@joevt)
Reputable Member
Joined: 2 years ago
 
Posted by: timothyov
Posted by: OliverB

It doesn't have hardly an impact, why should it have one?

I don't think this is correct. I heard rumors that it supports almost 8k, among other things. Also: power delivery. 

8K comes from DisplayPort 1.4 with Display Stream Compression (DSC). That's not new with USB-C.

Power Delivery is part of the USB spec. The power will come from the PCIe slot or PCIe power connectors. The USB port and USB device will negotiate how much power to use so your computer won't blow up.

The graphics card has a USB 3.1 gen 2 controller. It's just another PCIe device like the audio controller that is also on the graphics card. The USB controller taking 10 Gbps from a PCIe 3.0 x16 slot (126 Gbps) is not a problem. It might have an impact in a Thunderbolt 3 enclosure (22 Gbps) but only if you're writing a lot of data to a USB-C device.

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


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motoic
(@tsh3721)
Trusted Member
Joined: 2 years ago
 
Posted by: joevt
Posted by: timothyov
Posted by: OliverB

It doesn't have hardly an impact, why should it have one?

I don't think this is correct. I heard rumors that it supports almost 8k, among other things. Also: power delivery. 

8K comes from DisplayPort 1.4 with Display Stream Compression (DSC). That's not new with USB-C.

Power Delivery is part of the USB spec. The power will come from the PCIe slot or PCIe power connectors. The USB port and USB device will negotiate how much power to use so your computer won't blow up.

The graphics card has a USB 3.1 gen 2 controller. It's just another PCIe device like the audio controller that is also on the graphics card. The USB controller taking 10 Gbps from a PCIe 3.0 x16 slot (126 Gbps) is not a problem. It might have an impact in a Thunderbolt 3 enclosure (22 Gbps) but only if you're writing a lot of data to a USB-C device.

Then what's the point of cards that provide USB-C? Why are so many people saying that it's going to be revolutionary and why did the user above say he's been waiting for it for years?

Just trying to get some answers here.

2018 15" MBP w/ Radeon Pro 560x
Nvidia GTX 1070
Akitio Node
32" LG 32UD99-W
macOS Mojave, Bootcamp Windows 10


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OliverB
(@oliverb)
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Joined: 10 months ago
 
Posted by: timothyov

Then what's the point of cards that provide USB-C? Why are so many people saying that it's going to be revolutionary and why did the user above say he's been waiting for it for years?

I haven't heard that before. There is nothing revolutionary about it.

2018 15" MBP & 2015 13" MBP connected to RTX2080Ti GTX1080Ti GTX1080 Vega56 RX580 R9-290 GTX680


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itsage
(@itsage)
Famed Member Admin
Joined: 3 years ago
 

@timothyov Don't get confused between USB-C and Thunderbolt 3 port. No PCIe graphics card has a Thunderbolt 3 port. Some RTX series graphics cards have a USB-C port. VirtualLink VR Headsets is the intended use for this port but it can be used for many different scenarios. The significant of this port is that it can be both a monitor output and data input connection. For example when you have a single I/O eGPU enclosure, you can connect a USB-C hub to the USB-C port of the graphics card all the while connecting the monitor through DisplayPort. If you use a USB-C portable monitor, you only need a USB-C cable to provide power and monitor output.

Best ultrabooks for eGPU use

eGPU enclosure buying guide


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