System specs (model inc screen size, CPU, iGPU, dGPU, operating system which eGPU is being used)
2022 16" HP Elitebook 865 G9 (a.k.a. HP ZHAN X 2022 Ryzen Version)
* CPU: AMD Ryzen 7 PRO 6850HS with Radeon Graphics
* iGPU: AMD Radeon™ 680M (gfx1035)
* Memory: 16GB DDR5-4800
* OS: Windows 11 Home Edition (pre-installed) / Ubuntu 22.04 (manually installed, with kernel 5.17)
eGPU hardware (eGPU enclosure, video card, any third-party TB3 cable, any custom mods)
Enclosure: (Second hand) Razer Core V2
eGPU: AMD Radeon VII (gfx906)
Hardware pictures (note: require 5+ posts for "attach files" button to appear. Or can link from say http://imgur.com BUT post the .jpg/.png image file rather than a link to it)
Installation steps (what did you do to get it all going?)
* Boot the laptop and set up the pre-installed Win 11
* Install eGPU into the enclosure
* Connect the enclosure to the USB4 port of the laptop, check the device list, the eGPU shows (something like "Microsoft Basic Display Adapter")
* I don't know why the pre-installed AMD display driver cannot identify the eGPU, so download the driver from amd.com, version 22.5.2 or later
* also tried 22.5.1 (which was marked "Recommended") but it doesn't support the iGPU
* Install the driver (I tried with reset settings option ticked, maybe unnecessary)
* After rebooting it works in Win11.
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* As to Ubuntu 22.04, install package linux-oem-22.04 for newer kernel (refer to this phoronix's article)
* ( If played with vfio PCIe pass-through before, check settings like vfio-pci.ids=1002:66af,1002:ab20 and disable them )
* Shutdown, connect the cable and boot
* It should work now.
* NOTICE: for unknown reason, cltests reports CPU->GPU copy bandwidth is only ~0.9 GB/s
Benchmarks (Include a CUDA-Z or AIDA64 bandwidth pic. Optional: Valley, 3dmark, noting if it's on internal/external LCD )
Comments (eg: how has the eGPU improved your workflow or gaming)
I'm learning scientific computing on GPU. With Radeon VII, a ROCm development environment can be set up.
Although this build isn't intended for gaming, I also tried some on interal LCD without problem:
* R.U.S.E. on Win 11
* Simcity 2013 on wine 7.x on Ubuntu 22.04
Finally, eGPU on AMD laptops can be built easily thanks to USB4.