Recommended:

• Ryzen 7 / i7 (16 Threads+)
• 32GB RAM
• GTX 1070

Interesting discussion: https://www.reddit.com/r/photogrammetry/comments/lcywo8/computer_build_for_rendering_of/

• Limited improvement with more cores, but multitasking
• fast storage + storage for old projects
• 128GB enough for 5k images
• RTX3070

Meshroom can multi-thread on some nodes but not on all. So more cores != faster! https://github.com/alicevision/meshroom/issues/175

Multiple GPUs can be used if they are older to make Meshroom run faster. Although on newer GPUs there isn't much of a difference. https://github.com/alicevision/meshroom/issues/644