2020 27" iMac 5K (RP5500XT) [10th,8C,K] + RX 5700 XT @ 32Gbps-TB3 (Sonnet Breaka...
 
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2020 27" iMac 5K (RP5500XT) [10th,8C,K] + RX 5700 XT @ 32Gbps-TB3 (Sonnet Breakaway 550) + macOS 11.2.3 & Win10 20H2  

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Aquariuslt
(@aquariuslt)
Active Member
Joined: 6 months ago
 

@itsage, thanks and i have tested with bootcampdrivers.com 's blue edition and red edtion drivers from the guide on the top.

 

Both drivers installation seems success (without ! in DeviceManager).

But the performance seems unexepected.

 

I have tested in 3 situtations with playing World of Warcraft in 4k resolution WindowMode (WOW graphics settings to level 7)

 

- internal display , wow using dGPU 5700xt :  about 35 - 50fps

- internal display,  wow using eGPU 6900xt :  about  25- 35fps (lower performance)

- external display(DELL 2718QM), wow using eGPU 6900XT: about 120fps (seems that's right performance from 6900xt)

 

 

From your posts about performance comparison with `loopback mode` and `external display`

I think something wrong with my drivers/any other settings (internal display + wow using eGPU 6900xt perfromance target suppose to be 10%-20% lower than external display mode)

 

(I just dont want to use external display for playing games since iMac's internal display is awesome)

 

 

 

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itsage
(@itsage)
Founder Admin
Joined: 5 years ago
 

@aquariuslt, Definitely something is off with those numbers. Did you go into Windows graphics settings and manually assign the eGPU to handle each game/app you wanted to test?

 

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Aquariuslt
(@aquariuslt)
Active Member
Joined: 6 months ago
 

@itsage, yes. I have tested pre application settings via  windows 10 "Graphics Settings", same performance case 2

 

 

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Bertrand Leboeuf
(@bertrand-leboeuf)
Active Member
Joined: 10 months ago
 

@aquariuslt, What are your 3DMARK results ? just to see the raw values

 

2020 27" iMac 5K (RP5500XT) [10th,8C,K] + RX 5700 XT @ 32Gbps-TB3 (Sonnet Breakaway 550) + macOS 11.2.3 & Win10 20H2 [build link]  

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Aquariuslt
(@aquariuslt)
Active Member
Joined: 6 months ago
 

@bertrand-leboeuf, will post later (weekend).

 

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Aquariuslt
(@aquariuslt)
Active Member
Joined: 6 months ago
 

@bertrand-leboeuf, @itsage

Just post my 3d mark testing raw result 

dgpu 5700xt on internal 5k
egpu on internal 5k 1
egpu on external 4k 1

 

 

 

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