2020 15" Lenovo ThinkPad P1 Gen 3 [10th,6C,H] + RX 580 @ 32Gbps-TB3 (Razer Core X) + Win10 20H2  

System specs

ThinkPad P1 Gen 3:

• CPU: i7 10850H
• RAM: 16GB DDR4 2933MHz
• GPU: Intel UHD Graphics 630 (no dGPU)

eGPU Hardware:

• Razer Core X
• Sapphire Nitro+ Radeon RX 580 8GB
• Thunderbolt 3 0.5m cable from Razer Core X

Installation

1. Mount RX 580 in PCIe slot of Razer Core X.
2. Connect Razer Core X to ThinkPad P1 using Thunderbolt 3 cable from Razer Core X box.
3. Install Radeon 20.4.2 drivers

Drivers

At first I had some serious issues - FPS in some (not all) games was very poor and the sound was stuttering in a very irritating way. With time also the displays was starting stutter. See this thread for details. To fix that I had to downgrade Radeon drivers to 20.4.2. Since then everything has been working fine.

Benchmarks

Unigine Heaven

Preset 1:

• FPS: 48.1
• Score: 1212
• Resolution: 1920x1080
• Quality: Ultra
• Tessellation: Extreme
• Anti-aliasing: x8

Preset 2:

• FPS: 85.8
• Score: 2162
• Resolution: 1920x1080
• Quality: Ultra
• Tessellation: Disabled
• Anti-aliasing: off

3D Mark Fire Strike

• Fire Strike Score: 10 441
• Graphics score: 12 452
• Physics score: 14 480
• Combined score: 3 971

3D Mark Time Spy

• Time Spy Score: 4 196
• Graphics score: 3 963
• CPU score: 6 297