2017 15" Dell Latitude 5580 (940MX) [7th,4C,H] + RX 5700 XT @32Gbps-TB3 (Razer C...
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2017 15" Dell Latitude 5580 (940MX) [7th,4C,H] + RX 5700 XT @32Gbps-TB3 (Razer Core X) + Win10  


New Member
Joined: 2 years ago


System specs

CPU: Intel Core i5-7440HQ 
iGPU: Intel HD Graphics 630
dGPU: NVIDIA GeForce 940MX 2GB
SSD: Micron 1100 SATA 512GB 
RAM: 8GB Hynix (2x4GB DDR4-2400)
MBD: Dell Latitude 5580

Xiaomi Mi Surface Display 34" (3440x1440@144Hz, AMD FreeSync On - connected via Display Port)
Windows 10 build 1903


eGPU hardware

Razer Core X (use power delivery)
Gigabyte GV-R57XT-8GD-B installed (reference card, AMD drivers ver. 20.2.2)
0.5m Razer TB3 cable


Hardware pictures

(will update later)


Installation steps

Nothing special, just follow the instruction, then download drivers from amd.com, 3-4 system reboots total - and that's it. Magic!






The idea of building this setup is to jump into UWQHD gaming. I use my laptop both for work and gaming. But its impossible to enjoyall the good of UWQHD 144hz monitor without GPU boost. I thought about changing laptop or buying gaming PC, but eGPU is simply cheaper and more flexible solution. And its cooler and smarter 😉 Now I'm happy! I can play Witcher 3 on Ultra (just turn off NvidiaHair)  with comfortable 45-50fps avg on 3440x1440. I can play Dota 2 with 90-110 fps. Or I can lower graphics settings and add  more smoothness. The bottleneck here is not a TB3 bandwdith, but CPU. If I go for silent profile, wich limits CPU freq on 2.0Ghz, the system suffer 30% fps loss! And gets 100% CPU load. So keep it in mind. The build is rather noisy if you use it effectively. And I cant blame eGPU or laptop only. 

2017 15" Dell Latitude 5580 (940MX) [7th,4C,H] + RX 5700 XT @32Gbps-TB3 (Razer Core X) + Win10 [build link]  

New Member
Joined: 2 years ago

Hi! Very nice setup!


I have two questions, is your laptop marked as USB 3.0 or as Thunderbolt? At Dell's website, it says that Thunderbolt is optional.  I'm asking you because I found one at a reasonable price used, but the owner does not know if it is only USB 3.0 or thunderbolt. 


Second question, I see that you have a cooling base for the laptop, did it actually made it work cooler and thus, quietly? 

Thanks in advance.

This post was modified 2 years ago

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.