Yeah, my personal Skylake Xeon (W-2140B) iMac Pro is by no means bad, but it's not amazing either. The company M1 Pro MBP is notably faster in both single-threaded and multithreaded tasks while sipping a fraction of the power. If the iMac Pro weren't mostly silent (which I would guess, most used Xeon workstations are very much not) thanks to an oversized heatsink I would've traded it in for something better already.