Have you noticed an actual improvement? I couldn't pinpoint what was the bottleneck in the last Rust program compilation step at all. I have two machines with extremely fast NVMe SSDs and an incremental compilation improvement from i7-8565U (laptop, 24s) to Xeon W-2150B (iMac Pro, 12s) was extremely disappointing.

I'm pondering a Threadripper workstation but I'm very worried if I'll gain any actual incremental compilation speed at all.

Do you have any observations?