Watch the video which demonstrates the benefits of multi-threading using a workflow that loads an assembly containing 149 models; calculates all bounding boxes, facets all models; and computes 100 vertical slices through the assembly.
Window on the right: performs the operations using one thread with standard ACIS.
Window on the left performs the operations concurrently on multi-core hardware using seven threads with Thread-Safe-ACIS.
NOTE: Times reported are for ACIS modeling operations, not rendering.