Can you edit footage from the external drives connected through eGPU USB ports? Is the bandwidth high enough?
I have macbook pro that I use for video editing (premiere, resolve). I want to improve timeline performance. My footage is on the external USB drives. If I connect them through blackmagic eGPU, can I still benefit from gpu acceleration, or does data transfer of footage eats up the whole bandwidth?
1 Answer from the Community
If the USB drives support 10 Gbps (USB 3.1 gen 2) then they should be connected directly to a Thunderbolt 3 port of the MacBook Pro or to the Thunderbolt 3 port of the Blackmagic eGPU or any other port that supports USB 3.1 gen 2. If the USB drives support only 5 Gbps (USB 3.0 or USB 3.1 gen 1) then you can connect them anywhere you like (but connecting them directly to the MacBook Pro may be slightly faster). USB can only take 5 or 10 Gbps of the 22 Gbps bandwidth of PCIe traffic over Thunderbolt 3 and Thunderbolt 3 has separate channels for sending and receiving data so if you are only reading from USB then you should be able to send 22 Gbps to the eGPU. That means performance shouldn't get really bad.
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