AMD X399 Threadripper 1950X + GC-Titan-Ridge + Radeon VII & RTX 2080 [email protected] (Mantiz Venus) + Win10 1809 [theitsage]
I had planned to redo dGPU vs. eGPU using newer and more powerful graphics cards. Last time I did it was nearly two years ago using GTX 980 Ti and RX 580. Intel certified Thunderbolt 3 platform such as my X99 build was actually not reliable at all for TB3 eGPU usage. After two different X99 motherboards and different BIOS versions, I have not been able to get Thunderbolt 3 running consistently. Fortunately the GC-Titan-Ridge AIC allows Thunderbolt 3 connectivity on many platforms (unofficially). Therefore I'm using my AMD X399 build for this test. You can read more details on my Thunderbolt 3 + Ryzen Threadripper build.
ASRock X399M/Ryzen Threadripper 1950x/Radeon VII/32GB RAM/1TB SSD/GC-Titan-Ridge AIC
Mantiz Venus + Radeon VII + 2m Thunderbolt 3 cable
There's no Thunderbolt header on the ASRock X399M motherboard so I shorted pin 3 & 5 on one end of the TB3 header cable. This forces the GC-Titan-Ridge to stay activated from a cold boot. Hot-plugging allows expansion ports to work but not the eGPU. A warm boot is required to get the eGPU going. Another crucial piece is Intel Thunderbolt Software version [220.127.116.110]. In AIDA64 other than bandwidth throughput, look at how closely matched the rest of the numbers are.
In order to test the Radeon VII in eGPU mode, I used an RX Vega 56 as dGPU. Adrenalin driver version was 19.3.1.
|Radeon VII dGPU||Radeon VII eGPU|
|dGPU Mode||eGPU External Monitor||eGPU Loopback|
Thunderbolt 3 has its limits. Computing tasks are the most appropriate use for TB3 eGPU technology. Gaming would depend on many factors. Of the four games I chose, three are not Thunderbolt 3 friendly. I will be testing the RTX 2080 Ti on this X399 next. Results would likely be similar in terms of dGPU vs. eGPU performance.