Lightroom/Camera Raw: Please add full eGPU support

  • 2
  • Idea
  • Updated 9 months ago
  • Implemented
  • (Edited)
Please add full eGPU support to Lightroom Classic CC. Editing and export images. It would increase the speed in my workflow dramatically. And would let me stay with Adobe instead of switching to capture One (which does use the eGPU for a full 100%).
Photo of sjors

sjors

  • 9 Posts
  • 0 Reply Likes
  • sad

Posted 11 months ago

  • 2
Photo of Johan Elzenga

Johan Elzenga, Champion

  • 2914 Posts
  • 1251 Reply Likes
I’m sure that knowing that you will otherwise go to Capture One will guarantee that this request will be at the very top of the list now! :)
Photo of Johan Elzenga

Johan Elzenga, Champion

  • 2914 Posts
  • 1251 Reply Likes
I use a MacMini 2018 with the BlackMagic eGPU that Apple sells:

Photo of Johan Elzenga

Johan Elzenga, Champion

  • 2914 Posts
  • 1251 Reply Likes
Photo of sjors

sjors

  • 9 Posts
  • 0 Reply Likes
thanks! I'll take a look at it
Photo of Sven X

Sven X

  • 83 Posts
  • 47 Reply Likes
@Johan: offtopic - but can you recommend the mac mini 2018 + eGPU for latest Lightroom - and do you run LR on a 4-5k display?
Photo of Johan Elzenga

Johan Elzenga, Champion

  • 2914 Posts
  • 1251 Reply Likes
Yes, I can. I run it with two 4K displays and Lightroom runs fine.
Photo of Edmund Gall

Edmund Gall

  • 156 Posts
  • 55 Reply Likes
Hi sjors! Do you mean the new LR Classic CC v8.4 update released earlier this week (which enabled using the GPU for image editing) does not use your eGPU (or only a portion of it)? If yes, have you installed the latest drivers for your eGPU?..
Photo of sjors

sjors

  • 9 Posts
  • 0 Reply Likes
I'm sorry. I think there is a misunderstanding. I do agree that the information from the customer service is wrong. I tested my eGPU (sonnet eGFX breakaway puck AMD Radeon RX570) and I saw the same activities while editing my photo's. Actually; when I'm editing full screen (by pressing "f"). Lightroom starts using my internal GPU even when I'm starting the export of my images.
Photo of Johan Elzenga

Johan Elzenga, Champion

  • 2906 Posts
  • 1249 Reply Likes
I’ll test full screen later to see if I can reproduce that. That would be a bug, of course. I’m not sure if Lightroom is supposed to use the GPU (internal or external) for exporting images. As far as I can see it does not use either of them.

I just remembered something that can perhaps explain why the support rep was confused. Lightroom always uses the GPU that feeds the main monitor. So if you connect an eGPU to an iMac, without hooking up a second screen to that eGPU, then Lightroom will indeed not use it. It may well be that Adobe also has no plans to change that. But if you do connect a second screen and setup the system so that this is the main screen, then Lightroom will use the eGPU for acceleration.
Photo of sjors

sjors

  • 9 Posts
  • 0 Reply Likes
My bad. When I'm exporting images and when I'm editing full screen, Lightroom does use my CPU in stead of GPU. When I'm editing my photo's the regular way it does use my eGPU
Photo of Johan Elzenga

Johan Elzenga, Champion

  • 2906 Posts
  • 1249 Reply Likes
I just tested it. When I edit images in full screen mode, the eGPU is still used. 
Photo of sjors

sjors

  • 9 Posts
  • 0 Reply Likes
hmm, maybe I've to check my settings. Because in my case Lightroom does switch to my CPU. Do you have any clue what's the problem?