While I did test Metal for speed with the 980Ti, the product of the transcode is unusable and thus the Metal results should be ignored. These corrupt looking colour shifts not only display while transcoding in Resolve but they also come through in the exported file. When you transcode ARRIRAW through DaVinci Resolve using the Metal GPU Mode with a Nvidia GPU you will get corrupt looking images as explained in a previous blog post. This is a comparison of the Transcode Time in minutes between different GPU Modes and GPUs:

This is a comparison of the Transcode FPS between different GPU Modes and GPUs: Settings can be tweaked in Resolve's Preferences and will come into effect once you reboot the software. The only settings changed were GPU Processing Mode and which GPU was being used. ARRIRAW was chosen for these tests as it frequently requires transcoding and is heavily influenced by the performance of a Graphics Card.īoth source footage and exported footage was reading/writing from the MacBook Pro's Internal PCIe SSD which delivers speeds of over 2000MB/s thus negating hard disk speed as a limiting factor in the transcode pipeline.Īll tests were conducted in identical conditions. These clips were duplicated 3 Times in the Resolve Timeline to create a total length of source material to be processed of 2:14:09 24fps, aka 2 Mins 14 Secs 9 Frames. The exact clips used from the collection were B002C006 and B003C001. Output Format: HD 1920x1080 ProRes 422 HQ with a LogC to REC709 LUT Appliedįootage was courtesy of ARRI from their sample footage collection. Source Format: 4K UHD 3840x2160 ARRIRAW from an Alexa LF Transcodes were working with these input/output formats: Transcodes were conducted with DaVinci Resolve 15 Beta 6 for Single GPU Tests and DaVinci Resolve Studio 15 Beta 7 for Dual GPU Tests. To make the 980Ti compatible with macOS I used the macOS-eGPU.sh script. The eGPU was an Akitio Node Pro fitted with a Gigabyte GeForce GTX 980Ti connected via Thunderbolt 3 to the MacBook Pro. GPU: AMD Radeon Pro 560X / Intel UHD Graphics 630 The plan would be to use the Internal GPU for transcoding when you didn't have Mains Power, if you did have Mains Power you'd be able to use both the Internal GPU and eGPU to power through the transcodes at record speed.įor this test I used a top of the line 2018 MacBook Pro with the following specs: You'd have a laptop which would produce modest transcode results, then you could easily plug up your eGPU to take those speeds to the next level. If possible, it would allow for a really portable transcoding solution on-set. What I am gunning for with these tests is to see if it's viable to use the Internal GPU which is an AMD Radeon Pro 560X and the eGPU Nvidia 980Ti simultaneously in Resolve Studio to get faster transcode speeds from the 2018 MacBook Pro.

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