Using a TB3-compatible DisplayPort 1.2 to USB-C cable instead of standard Thunde...
 
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Using a TB3-compatible DisplayPort 1.2 to USB-C cable instead of standard Thunderbolt.  

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Results45
(@results45)
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Joined: 2 months ago
 

I was rummaging around Amazon yesterday and stumbled upon this: a TB3-compatible DisplayPort 1.2 to USB-C cable!

Has anyone every used this along with a power supply as an alternative to Thunderbolt and M.2?

If so, would this only be suitable for use with a graphics card that performs no better than a 1650 Super or 5500XT since the bandwidth caps out at 21.6 Gbps (aka just under three PCIe Gen3 lanes)?

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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tsakal
(@tsakal)
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Joined: 2 years ago
 

@results45, Have used the cable matters version with a 2080ti and VR and it works . Also with a MacBook Pro but that was to be expected. 

 

A) 2020 MacBook Pro, i7-1038NG7, 32GB RAM, 1TB, EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, Samsung 65 Q70R
Mac OS Catalina 10.15.5, Internal Bootcamp Windows 10 2004 pci.sys swap.
B) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, LG 32UK550
Mac OS Catalina 10.15.2, Ext SSD Windows 10 1903 V1 .295

C) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Gigabyte Gaming Box RX580 8Gb, Mac OS Catalina 10.15.2, Ext SSD Windows 10 1803

D) 3.1 GHz I7, 16Gb, 1TB MBP 13 2015 TB2 , EGPU Gigabyte Gaming Box RX580 8Gb


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Results45
(@results45)
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Joined: 2 months ago
 

@tsakal, This DisplayPort 1.4 cable? https://www.amazon.com/Cable-Matters-DisplayPort-USB-C-Supporting/dp/B06XTZZYKX/

That's even better and at more affordable price too! How does if fair in terms of framerates and frametimes (ms) against plugging-in your GPU via Thunderbolt 3 cable or directly into a PCIe x16 slot on a motherboard?

This is considering the "All-in-One" protocol nature of the Thunderbolt 3 & 4 standard:

I'll probably be pairing the eGPU with a Sub-3 pound Core i7-8550U ultrabook.

This post was modified 6 days ago

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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tsakal
(@tsakal)
Reputable Member
Joined: 2 years ago
 

@results45

No idea for the use you are thinking of . 

I used it with a vr headset out of a 2080ti and it works at around 100 fps . 

I had it confirmed by the company in writing before I bought it. 

You better ask them with your specific use 

 

 

A) 2020 MacBook Pro, i7-1038NG7, 32GB RAM, 1TB, EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, Samsung 65 Q70R
Mac OS Catalina 10.15.5, Internal Bootcamp Windows 10 2004 pci.sys swap.
B) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, LG 32UK550
Mac OS Catalina 10.15.2, Ext SSD Windows 10 1903 V1 .295

C) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Gigabyte Gaming Box RX580 8Gb, Mac OS Catalina 10.15.2, Ext SSD Windows 10 1803

D) 3.1 GHz I7, 16Gb, 1TB MBP 13 2015 TB2 , EGPU Gigabyte Gaming Box RX580 8Gb


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joevt
(@joevt)
Noble Member
Joined: 3 years ago
 

@results45, It's a DisplayPort cable. You cannot use it to connect an eGPU to a computer. It is not an alternative to Thunderbolt or M.2 because it does not do PCIe.

 

Mac mini (2018), Mac Pro (Early 2008), MacBook Pro (Retina, 15-inch, Mid 2015), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


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Results45
(@results45)
Active Member
Joined: 2 months ago
 

@joevt, @tsakal, Oh that makes sense. So for VR I'll need 2 connections: one with Thunderbolt/USB4/M.2/OcuLink from the card to the ultrabook and another from the card to the VR headset via the aforementioned USB-C to DisplayPort cable?

 

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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joevt
(@joevt)
Noble Member
Joined: 3 years ago
 

@results45, yes.

Also mPCIe, ExpressCard, SATA Express, and U.2 are options - basically anything with PCIe in it. USB4 is not out yet. Thunderbolt 4 is soon (starting with Tiger Lake laptops). I don't think I've seen anyone try SATA Express or U.2.

 

This post was modified 2 days ago

Mac mini (2018), Mac Pro (Early 2008), MacBook Pro (Retina, 15-inch, Mid 2015), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


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tsakal
(@tsakal)
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Joined: 2 years ago
 

@results45, correct 

 

A) 2020 MacBook Pro, i7-1038NG7, 32GB RAM, 1TB, EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, Samsung 65 Q70R
Mac OS Catalina 10.15.5, Internal Bootcamp Windows 10 2004 pci.sys swap.
B) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, LG 32UK550
Mac OS Catalina 10.15.2, Ext SSD Windows 10 1903 V1 .295

C) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Gigabyte Gaming Box RX580 8Gb, Mac OS Catalina 10.15.2, Ext SSD Windows 10 1803

D) 3.1 GHz I7, 16Gb, 1TB MBP 13 2015 TB2 , EGPU Gigabyte Gaming Box RX580 8Gb


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