This is a professional, highly detailed 3d model mostly for architectural visualizations. Therefore it's quite heavy, uses Blender's hair particle systems.
Average render times for me was around 6 min, only CPU 10 threads 128 samples. The preview images are raw renders, no post processing was done.
Simple render scene included in .blend file.
Dimensions are:X: 2.68m Y: 2.00m Z: 4.31mm