https://forum.phaseone.com/En/viewtopic.php?f=52&t=26478
So everyone could use this information to build/buy a good computer for CO workflow.
I suggest to improve this bench with fixed set of RAW files, so the collected bench data would be more accurate: it will depend mostly on computer specification (CPU and GPU first), but not on RAW files type (Canon, Nikon, Sony and all other RAW types affect export speed).
So here is the benchmark algorithm:
- 1. Download the following zip with RAW files and unpack them to some folder
https://drive.google.com/open?id=1sqW34MAafXvRHsBmZmynGcjTVN-LDpyz
50 photos made with Canon 5D mk3, size about 1.3GB.
Theese photos were made by myself so no property rights are violated

- 2. Start CO and ensure that GPU acceleration is enabled: menu Edit - Preferences - General tab - Hardware acceleration - Processing set to Auto (if it was set to "Never" before, you need to restart CO so changes are applied)
- 3. Open RAW files that were downloaded on step 1 and wait until they are fully imported (previews are built by CO).
- 4. Set up the following export parameters:
Format: JPEG
Quality: 100%
ICC Profile: sRGB IEC61966-2.1
Resolution: 300 px/in
Scale: Fixed 100%
Open with: None


- 5. Make the first export (GPU accelerated) noting the duration of this process.
At least one export process is needed. However it would be great if you'll be able to make it 2 or 3 times, because results may vary depending on HDD caching, computer backround processes and others. Take the shortest time duration - it is the first bench result.
- 6. Disable GPU acceleration: menu Edit - Preferences - General tab - Hardware acceleration - Processing set to Never. Restart the CO.
- 7. Make the second export (no GPU acceleration) in a similar way as in step 5.
That will be the second bench result.
- 8. Make a post in this thread with the following format:
Computer type (PC/Mac) and model (if any) and OS version
CPU+GPU - benchmark time 1
CPU only - benchmark time 2
CPU model
GPU model
CO version

. . .
Here is a myself-written Windows utility that will help to easily calculate benchmark results: it analyzes all files in selected folder and automatically calculates time span between opening of first file for writing and last file modifying.
https://drive.google.com/file/d/1mcT6CIaBOraPBCFGLH7s4I_B8By3WP9R/view?usp=sharing
. . .
It is also very welcomed to add your bench values via this form
https://phodograf.com/capture-one-batch-export-benchmarks/
Here you can see all collected benches in user-friendly spreadsheet format (thanks to WPNL) .
. . .
Suggestions for benchmark improvements are very welcomed!
Hope my post doesn't look to rigorous

The only goal of this thread is to help each other with selecting hardware components for best CO workflow experience.