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)
Active Member
Joined: 1 year 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: 3 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, i7-1068NG7, 32GB RAM, 1TB, EGPU Razer Core X, Gigabyte OC 3080 10Gb, Samsung 49 1440p UltraWide C49RG
Mac OS Catalina 10.15.7, Internal Bootcamp Windows 10 latest update previously W10 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)
Active Member
Joined: 1 year 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 11 months 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: 3 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, i7-1068NG7, 32GB RAM, 1TB, EGPU Razer Core X, Gigabyte OC 3080 10Gb, Samsung 49 1440p UltraWide C49RG
Mac OS Catalina 10.15.7, Internal Bootcamp Windows 10 latest update previously W10 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: 4 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), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Radeon Pro W5700, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


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Results45
(@results45)
Active Member
Joined: 1 year 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: 4 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.

 

Mac mini (2018), Mac Pro (Early 2008), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Radeon Pro W5700, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


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tsakal
(@tsakal)
Reputable Member
Joined: 3 years ago
 

@results45, correct 

 

A) 2020 MacBook Pro, i7-1068NG7, 32GB RAM, 1TB, EGPU Razer Core X, Gigabyte OC 3080 10Gb, Samsung 49 1440p UltraWide C49RG
Mac OS Catalina 10.15.7, Internal Bootcamp Windows 10 latest update previously W10 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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