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Neoverse is a mobile chip based on putting massive amounts of aggregate power vs die area. It's not a flagchip architecture because it's very conservative as fa
by Veliladon 4y ago
Neoverse is a mobile chip based on putting massive amounts of aggregate power vs die area. It's not a flagchip architecture because it's very conservative as far as execution goes. It just lumps stacks of cores on a single die and lets the OS/workload dictate the performance.
In comparison an X3 is a much faster chip clock-for-clock per watt on a per core basis because it's built for ultimate ST performance on a power budget. X3 has a full 6-way decoder vs 4 on Ares. So straight off the bat you can decode 1.5x as many instructions. X3 has a 320 entry ROB vs 128 on an N1 so you can keep over twice as many instructions in flight. An N1 has 3 ALU pipes, an ALU with MAC and DIV, and two FPU pipes. X3 on the other hand has 4 ALU, an ALU/MUL pipe, and an ALU/MAC/DIV pipe. On the FPU side it has two FMAC pipes and two FDIV pipes.
The X3 is a much larger and more powerful core than an N2 little alone an N1 and deserves to be called a flagship core in every sense of the word.