Big Sur seems to be slower than Catalina in Geekbench Compute @ Metal
 
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Did you observe similar difference between Catalina and Big Sur with your setup? Poll is created on Nov 26, 2020

  
  
  
Poll results: Did you observe similar difference between Catalina and Big Sur with your setup?
Voter(s): 1
Poll is created on Nov 26, 2020
Yes, Big Sur makes my eGPU slower  -  votes: 0 / 0%
0
0%
No, Big Sur makes my eGPU faster  -  votes: 0 / 0%
0
0%
No, they're about the same  -  votes: 1 / 100%
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100%

Big Sur seems to be slower than Catalina in Geekbench Compute @ Metal  

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oo.viper.oo
(@oo-viper-oo)
Active Member
Joined: 4 months ago
 

I just retested Geekbench with my Blackmagic eGPU Pro and granted, it's different host (Macbook Pro i9 vs Mac Mini i7) and it's slightly different revision of Geekbench, but the difference in performance is staggering:

https://browser.geekbench.com/v5/compute/compare/1626966?baseline=1936965

Canny 80273 in Catalina vs 43073 in Big Sur, wtf?

Did you observe similar difference between Catalina and Big Sur with your setup?

This topic was modified 2 months ago

Mac Mini 2018 + Blackmagic eGPU Pro


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tsakal
(@tsakal)
Reputable Member
Joined: 2 years ago
 

@oo-viper-oo, somebody else in the forum has a thread about Big Sur performance and he said that Big Sur was better than Catalina. 

 

A) 2020 MacBook Pro, i7-1068NG7, 32GB RAM, 1TB, EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, Samsung 49 1440p UltraWide C49RG
Mac OS Catalina 10.15.7, Internal Bootcamp Windows 10 2004 pci.sys swap.
B) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, LG 32UK550
Mac OS Catalina 10.15.2, Ext SSD Windows 10 1903 V1 .295

C) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Gigabyte Gaming Box RX580 8Gb, Mac OS Catalina 10.15.2, Ext SSD Windows 10 1803

D) 3.1 GHz I7, 16Gb, 1TB MBP 13 2015 TB2 , EGPU Gigabyte Gaming Box RX580 8Gb


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ikir
 ikir
(@ikir)
Prominent Member
Joined: 4 years ago
 

My 5700 XT is faster on Big Sur than Catalina with Geekbench Metal.

This post was modified 2 months ago


MacBook Pro 13" 2020 Touch Bar M1 8-core CPU 8-core GPU - 16GB unified memory - 512GB PCIe SSD
MacBook Pro 13" 2020 Touch Bar i7 quad-core 2.3Ghz - 16GB RAM - 1TB PCIe SSD

my awesome Radeon VII eGPU
my Mantiz Venus extreme mod with Sapphire Nitro+ RX Vega 64

 
2018 13" MacBook Pro [8th,4C,U] + Radeon VII @ 32Gbps-TB3 (Mantiz Venus) + macOS 10.15 [build link]  


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oo.viper.oo
(@oo-viper-oo)
Active Member
Joined: 4 months ago
 

Hmm. Ok, then I reshuffle the HW and re-test Blackmagic on the Mac Mini, currently already also on Big Sur, to rule out issue with Macbook. Thx.

Mac Mini 2018 + Blackmagic eGPU Pro


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Mini i5
(@mini-i5)
Honorable Member
Joined: 1 year ago
 

(Unless Geekbench fixed their bug on Mac OS) you will need to attach (2) or more displays to the Mini/eGPU to see a higher score.

https://egpu.io/forums/mac-setup/mac-os-egpu-performance-with-dual-displays/

2018 Mac Mini [8th,6C,B] + RX Vega 56 @ 32Gbps-TB3 (Sonnet Breakaway 650) + macOS 11.1 & Win10 [build link]  

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oo.viper.oo
(@oo-viper-oo)
Active Member
Joined: 4 months ago
 

Ok, so I re-tested it with Mac Mini and I see the same drop as on Macbook Pro. Now it's the Apples to Apples, more less, apart from minor version difference in Geekbench itself, and then, of course, the os version.

https://browser.geekbench.com/v5/compute/compare/1940074?baseline=1626966

I will try the displays trick as pointed out by @mini-i5 above (thank you!). To be frank I do have 5K and 4K monitors plugged into my machine normally, but I'm not really sure whether I had them in back then, when Vega achieved 71102 and I had just one connected to eGPU now, when I re-tested it, as I thought display would cause unnecessary load on the eGPU and lowering the score.

If it's such stupid bug/incompatibility, then I'm fine. I was more worried that maybe Vega drivers in Big Sur were f\@\@ked up.

Mac Mini 2018 + Blackmagic eGPU Pro


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oo.viper.oo
(@oo-viper-oo)
Active Member
Joined: 4 months ago
 

Ok, I have retested it with two monitors (5k and 4k) attached to eGPU, one via thunderbolt, the other via displayport. And the results under Big Sur with last Geekbench stay around 53-54k ( https://browser.geekbench.com/v5/compute/1965136). So I conclude that those 71102 generated previously were artificially inflated by Geekbench.

Mac Mini 2018 + Blackmagic eGPU Pro


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