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

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(@drew_curran)
Active Member
Joined: 12 months ago
 

Hi folks, I'm new to the eGPU game and just built a Razer 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 Razer 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 Razer Core Chroma X?

2018 MacBook Pro 15" & Razer Core X Chroma Vega 64


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OliverB
(@oliverb)
Noble Member
Joined: 2 years ago
 

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

 
2018 15" MacBook Pro (RP560X) [8th,6C,H] + RX 5700 XT @ 32Gbps-TB3 (ASUS XG Station Pro) + Win10 & macOS 10.15.4 [build link]  


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(@drew_curran)
Active Member
Joined: 12 months ago
 

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.

2018 MacBook Pro 15" & Razer Core X Chroma Vega 64


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OliverB
(@oliverb)
Noble Member
Joined: 2 years ago
 
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

 
2018 15" MacBook Pro (RP560X) [8th,6C,H] + RX 5700 XT @ 32Gbps-TB3 (ASUS XG Station Pro) + Win10 & macOS 10.15.4 [build link]  


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mac_editor
(@mac_editor)
Famed Member Moderator
Joined: 3 years ago
 
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

purge-wranglertbt-flashpurge-nvdaset-eGPU
Insights Into macOS Video Editing Performance

Master Threads:
2014 15-inch MacBook Pro 750M
2018 15-inch MacBook Pro

 
2019 13" MacBook Pro [8th,4C,U] + RX Vega 64 @ 32Gbps-TB3 (Mantiz Venus) + macOS 10.14.6 & Win10 [build link]  


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(@drew_curran)
Active Member
Joined: 12 months ago
 

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.

2018 MacBook Pro 15" & Razer Core X Chroma Vega 64


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