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A comment on Power 9 May Dent X86 Servers: Alibaba, Google, Tencent Test IBM Systems. Parent comment

Re:Power 9 May Dent X86 Servers: Alibaba, Google, Tencent Te... by wmf on Thursday March 22, 2018 @08:43PM (#16654091)
They "inflated" it from 12 to 24 but recently it looks like they deflated it back to 12 cores. However you count it, a full Power9 chip is competitive with a 24-core Xeon or 32-core Epyc.
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Re:Power 9 May Dent X86 Servers: Alibaba, Google, Tencent Te... by olddellian on Wednesday March 28, 2018 @11:45PM (#16704357)
A full POWER9 chip should be compared with a 48-core Xeon.

In regards to cores, the distinction is between the PowerVM and Linux (OpenPOWER/PowerNV) ecosystem variants. Both are made to process 96 threads, but the difference is in whether the thread processing units are grouped eight to a core (SMT8) or four to a core (SMT4).

The PowerVM version, some say for licensing reasons, gets the SMT8 cores. Either way, you get 96 threads:

12 cores * SMT8 = 96 threads 24 cores * SMT4 = 96 threads

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