So - 56 cores instead of 64
The EPYC Rome processors go up to 64 cores (128 threads) unlike the 56 cores which will be available in one SKU only (the 9282) or the 48 cores available in another SKU (the 9242) - all the other processors have the same or fewer cores than the current first generation EPYC which reaches 32 cores.
As the previous commentator mentioned - a 400W Intel power consumption rating implies a much higher peak power draw. A PSU with over 1200W output is needed for each 9282 chip (an 8 socket system would need over 10kW of power supply - BEFORE peripherals !!!)
Icon for the heat dissipation ->