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Razor Core Chroma X and Strix Vega 56 under-performing?
 

Razor Core Chroma X and Strix Vega 56 under-performing?  

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(@drew_curran)
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Joined: 2 weeks ago
Posts: 6
Jun 11, 2019 8:29 pm  

Hi folks, I'm new to the eGPU game and just built a Razor Core X Chroma with a Strix Redeon Vega 56 to use with my 2018 MacBook Pro 15" FCPx editing machine running 10.14.5 and FCPx 10.4.6. MacBook spec: 2.2Ghz i7 32GB ram, Radeon Pro 560x 4GB.

Many people use the Strix Vega 64 version of this card so I thought the 56 was the one to go for on my budget.

At present I have nothing plugged into the Razor Core except the supplied TB3 cable.

The activity monitor seems to be only show 50% usage when rendering with the Vega 56 with the processor maxing out between 600-700mhz according to iStat. Interestingly the internal Pro 560x maxes out at 100% during the same render.  Is this normal or should the graph be filing the chart?

Render speeds are only marginally faster with the Vega 56.

Should I be concerned? Is the GPU not receiving enough power from the Razor Core Chroma X?

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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OliverB
(@oliverb)
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Joined: 8 months ago
Posts: 1297
Jun 11, 2019 8:58 pm  

Radeon Pro 560X is a decent card with good drivers and no issues at all for both MacOSX and Windows. 
It's almost a counterargument against eGPUs at all. eGPUs become "nice-to-haves".

2018 15" MBP & 2015 13" MBP connected to RTX2080Ti GTX1080Ti GTX1080 Vega56 RX580 R9-290 GTX680


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(@drew_curran)
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Joined: 2 weeks ago
Posts: 6
Jun 11, 2019 9:22 pm  

Yeah the more i research this the more my MacBook looks like it doesn’t need much help in the GPU department! 

At least the Core Chroma X is useful hub and gives me a cooler quieter laptop with less screaming fans.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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OliverB
(@oliverb)
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Joined: 8 months ago
Posts: 1297
Jun 11, 2019 10:55 pm  
Posted by: Drew Curran

Yeah the more i research this the more my MacBook looks like it doesn’t need much help in the GPU department! 

At least the Core Chroma X is useful hub and gives me a cooler quieter laptop with less screaming fans.

@drew_curran
Very precise! This was the main argument for me, too, to use an eGPU: The notebook stays much cooler and quieter! Moreover it's useful as a HUB, as you mentioned.

2018 15" MBP & 2015 13" MBP connected to RTX2080Ti GTX1080Ti GTX1080 Vega56 RX580 R9-290 GTX680


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mac_editor
(@mac_editor)
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Joined: 2 years ago
Posts: 2094
Jun 12, 2019 12:47 am  
Posted by: Drew Curran

Yeah the more i research this the more my MacBook looks like it doesn’t need much help in the GPU department! 

At least the Core Chroma X is useful hub and gives me a cooler quieter laptop with less screaming fans.

FCP + using an external display over eGPU helps massively for timeline performance as they become complex (speaking from experience), and render times are faster as well (external display not a factor here). I am using a Vega 64, but the performance gains should be similar for you. Apple's support document on the same: https://support.apple.com/en-us/HT209134

This post was modified 2 weeks ago

purge-wrangler.shpurge-nvda.shset-eGPU.shautomate-eGPU EFI Installer
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Troubleshooting eGPUs on macOS
Command Line Swiss Knife
eGPU Hardware Chart
Multiple Build Guides
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Current: MacBook Pro RP560X + 480/R9 Fury/Vega 64 | GTX 780/1070
Previous: 2014 MacBook Pro 750M + 480/R9 Fury | GTX 780/980 Ti/1070


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(@drew_curran)
Active Member
Joined: 2 weeks ago
Posts: 6
Jun 12, 2019 6:16 am  

I ran the BruceX test this morning and as you say the eGPU shows its strength in complex scenes averaging 19 seconds compared to 38 seconds for the internal GPU. The activity monitor showed a 100% usage during every test.

I guess my initial tests with my own FCPx timelines didn't really stress the eGPU as they didn't have much complexity other than LUTs and colour wheels applied in most cases.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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