Originally Posted by Kpjoslee
Originally Posted by helis4life
Anandtech reviewed an ARM server that outperformed an Intel server by 30%, but with 400% more cores. Unsure of power consumption. The X86 architecture does more per clock cycle than the arm architecture, hence why it uses more power and why the ARM server required far more cores to outperform the intel server.
For Apple to produce a Mac Pro with the same performance as an Intel it will have to have a substantial amount more cores than the Intel counterpart.
Apple's current A13 big core is lot more powerful than Neoverse N1 Arm core (which is found on most recent ARM server chips) which is Cortex A76 based.
The A13 has decent single threaded performance, but poor multithreaded performance. Apple used the A12z in newer iPads and the devkit, which has worse single core performance, but better multi-core performance. An A13 has a 7w TDP. Getting AMD renoir level of performance from the A13 would require a 20-25w TDP, higher than Renoir. The A13 runs HOT. Note that Renoir would have slightly slower single core performance. This is last-gen Apple vs AMD. Apple is moving to 5nm while AMD is staying on 7nm for another year. We will see what things look like EOY.