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Which GPU would be optimal?  

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boof.fo
(@boof-fo)
New Member
Joined: 1 week ago
 

Hi guys, I'm interested in buying an eGPU. I watched a lot of videos about eGPUs and I read a lot of stuff about them and I think that I'm ready to buy one. I found an R43SG-TB3 for only 75 euros and I want to pair it with my 16" MBP. I already have a 550W PSU and a RX 480 4GB but I think that I should upgrade the GPU since it's getting pretty old and It would run bad as an eGPU. I would like to play the newest games like Red Dead Redemption 2 on high 60 fps (I would love to play @ 1440p but I would need a very expensive GPU). Which GPU would be enough? I can't wait for the 3060 to be announced.

This topic was modified 1 week ago

Macbook Pro 16" 2019
i7-9750H, 16GB, AMD 5300M


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Boltoway
(@boltoway)
Eminent Member
Joined: 2 years ago
 

The answer to this question will largely depend on your budget and if you are willing to purchase second hand.

The first thing to look at is whether you want to use the eGPU in MacOS or in Windows through Bootcamp. You will need to get an AMD GPU if you wanted to use it natively with MacOS. In this case I would suggest getting a 5700 XT such as the Sapphire Pulse. 

If you only want to play games through Windows, you could look into getting an RTX 2070 Super on sale before they are phased out. If you are willing to purchase second hand, a GTX 1080 or 1080 Ti offer great performance. 

If you are running in 1080p, I wouldn't suggest going above or beyond a 5700 XT / 2070 Super because of the increased CPU / TB3 bottleneck. You would be paying for performance you wouldn't really be experiencing at that resolution. 

 

Dell XPS 13 9380 (i7-8565U, 16GB RAM, 1TB Samung 970 Evo Plus) + Razer Core X + AMD RX VEGA 64 Limited Edition + Acer Nitro 27" VG271UP

 
2019 13" Dell XPS 13 9380 [8th,4C,U] + RX Vega 64 @ 32Gbps-TB3 (Razer Core X) + Win10 [build link]  


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Matthew Kwong
(@matthew_kwong)
Active Member
Joined: 3 weeks ago
 
Posted by: @boltoway

If you are running in 1080p, I wouldn't suggest going above or beyond a 5700 XT / 2070 Super because of the increased CPU / TB3 bottleneck. You would be paying for performance you wouldn't really be experiencing at that resolution. 

 

Similar question, but in my case, I'm using a 1440p ultrawide monitor, so kind of between 1080p and 4k. I'm wondering whether a 6800 will be worth it.

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

.

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Boltoway
(@boltoway)
Eminent Member
Joined: 2 years ago
 

@matthew_kwong, Sure, especially if you are playing very graphically demanding games.

As a general rule, higher resolution gaming increases the load on the GPU more than the CPU, RAM and in our case the TB3 connection. When running in a lower resolution, the GPU is not working nearly as hard, and the framerate begins to be limited by other hardware.

This why you see less of a difference in the performance margin between an eGPU system and a desktop system in 4K, because the GPU is working to its maximum potential.

 

 

Dell XPS 13 9380 (i7-8565U, 16GB RAM, 1TB Samung 970 Evo Plus) + Razer Core X + AMD RX VEGA 64 Limited Edition + Acer Nitro 27" VG271UP

 
2019 13" Dell XPS 13 9380 [8th,4C,U] + RX Vega 64 @ 32Gbps-TB3 (Razer Core X) + Win10 [build link]  


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