2019 16" MacBook Pro (RP5300M) [9th, 6C,H] + RTX 3070 @ 32Gbps-TB3 (Razer Core X) + Win10 [VoliCrank]  

System specs (model inc screen size, CPU, iGPU, dGPU, operating system which eGPU is being used)

MacBook Pro 16" (2019)

LG Ultrafine 23.7 inch 4K (2nd gen I think) from Apple

Intel 9th gen i7

Radeon 5300M

Win10

eGPU hardware (eGPU enclosure, video card, any third-party TB3 cable , any custom mods)

Razer Core X

Nvidia RTX 3070

Moshi Display Port to USB-C

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)

later..

Installation steps (what did you do to get it all going?)

Seeing that there weren't many posts with LG Ultrafine, I decided to contribute my build (completed today!)

I naively thought I could plug and play with Ultrafine -> MBP <- EGPU, but I was very wrong. I tried to make it work by activating iGPU (with efi sth sth but never really succeeded so I gave up). The solution was pretty nice; I only needed to buy a bidirectional display port to usb-c cable (Moshi works from Apple's website but I think bidirectional cables should generally work).  So now my setup is as follows Ultrafine -> EGPU (via Moshi) -> MBP (via thunderbolt 3 cable from Razer Core X).

The only caveat is I have to unplug everything from my LG Ultrafine (ie keyboard, mouse and SSD) and connect them directly to my MacBook because the moshi cable cannot do it apparently. I thought of connecting my Macbook to the LG UltraFine and use it as a USB Hub, but it doesn't work either. The setup took a lot of digging because not many people use LG Ultrafine from Apple here (which is good! I regret so much buying that overpriced screen; it's only nice if you use it the way Apple intended you to ie not in Windows). So I hope this build helps those of you with LG Ultrafine from Apple.

As for installing the EGPU, it's just plug and play. I usually try to hot-plug it (during Windows loading screen) or just boot with EGPU on. Both ways work consistently and I didn't have to uninstall dGPU which was nice. In essence the dGPU and EGPU work nicely together and I never really encountered error 12. 

Benchmarks (Include a CUDA-Z or AIDA64 bandwidth pic. Optional: Valley, 3dmark, noting if it's on internal/external LCD )

Didn't do any, but I played Overwatch with highest settings with ~210 FPS.

Comments (eg: how has the eGPU improved your workflow or gaming)