Ampere Switching to In-House ARM CPU Designs, 128+ "5nm" Cores in 2022
takyon writes:
Ampere will switch from using Arm's "Neoverse" cores to custom ARM cores developed in-house:
Today's big reveal comes in regard to the microarchitecture choices that Ampere is going to be using starting in their next generation 2022 "Siryn" design, successor to the Altra Max, and relates to the CPU IP being used:
https://images.anandtech.com/doci/16684/AmpereStrategyRoadmapFinal_5.png
Starting with Siryn, Ampere will be switching over from Arm's Neoverse cores to their new in-house full custom CPU microarchitecture. This announcement admittedly caught us completely off-guard, as we had largely expected Ampere to continue to be using Arm's Neoverse cores for the foreseeable future. The switch to a new full custom microarchitecture puts Ampere on a completely different trajectory than we had initially expected from the company.
In fact, Ampere explains that what the move towards a full custom microarchitecture core design was actually always the plan for the company since its inception, and their custom CPU design had been in the works for the past 3+ years.
[...] Ampere's explanation and rationale for designing a full custom core from the ground up, is that they are claiming they are able to achieve better performance and better power efficiency in datacentre workloads compared to what Arm's Neoverse "more general purpose" designs are able to achieve. This is quite an interesting claim to make, and contrasts Arm's projections and goals for their Neoverse cores. The recent Neoverse V1 and N2 cores were unveiled in more detail last month and are claimed to achieve significant generational IPC gains.
Previously: 80-Core Arm CPU To Bring Lower Power, Higher Density To A Rack Near You
Ampere Announces Altra ARM CPUs with Up to 80 Cores, Going to 128 Cores by 2021
ARM Announces Neoverse V1 and N2 Cores
80-Core Ampere Altra Server CPU Competes Well Against Xeon and Epyc
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