Qualcomm’s ARM-based Centriq 2400 has higher all-core throughput and better power efficiency than Intel’s Skylake Xeon SP

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The Skylake has 48 hardware threads vs. Centriq’s 46.  In terms of CPU cores, Skylake has 24 (the test was conducted on a dual-socket system) vs. Centriq’s 46 (single-socket).  So one may justify Centriq’s higher throughput by its higher core count.  But when power efficiency is taken into consideration, that justification is no longer sufficient:

On the NGINX web server, …the [Centriq] chip did 214 requests per second per watt, compared to 99 for the Skylake chip….

Of course, higher count of less powerful cores has always been a strategy of many of Intel’s competitors (witness the more recent SPARC processors), but they are suitable mostly for embarrassingly parallelizable software.  Unfortunately, many mission-critical software systems are not like that.  For example, banking, ERP, and CRM systems are ultimately bottlenecked by their need to maintain accurate state information (in databases).

https://www.nextplatform.com/2017/12/12/battle-datacenter-compute-qualcomm-centriq-versus-intel-xeon/

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