“All 64 cores could hit up to 5GHz in single threaded test.”
The 9575F held about 4.3GHz across all 128 threads in Cinebench and pulled nearly 99% of its 576 GB/s theoretical memory bandwidth. The fine print is in the DIMMs. DDR5-6400 holds only with one DIMM per channel, and two per channel drops it to 4400. Socket-to-socket latency went up over Genoa too. The headline memory speed assumes you leave half the slots empty.