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  ARM Give a man a fire and he's warm for a day, but set fire to him and he's warm for the rest of his life (Terry Pratchett, Jingo)

Intel Hyper Threading Performance On The Xeon 678X "Granite Rapids-WS"

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With the [1]Intel Xeon 678X "Granite Rapids WS" processor that I have been recently testing within the HP Z4 G6i workstation, there are 48 cores plus with Hyper Threading is a total of 96 threads for this high-end workstation processor with a 300 Watt TDP. For those curious about the performance impact of HT/SMT on this Intel Xeon 600 series workstation processor, here are some comparison benchmarks.

[2]

For those curious about the performance impact of Hyper Threading on the Xeon 600 series workstation CPUs where HT/SMT is currently supported unlike the current generation Core Ultra desktop processors, this article provides a fresh look at the performance impact as well as power/thermal monitoring.

The Intel Xeon 678X within the HP Z4 G6i workstation was tested with the Xeon 678X 48-core processor at its defaults with Hyper Threading disabled and then repeating the same tests when it was disabled. The same Fedora Workstation 44 software stack was used throughout testing with this coming down to a simple SMT on/off comparison for reference purposes.

Thanks to HP for providing this temporary review sample for Linux testing at Phoronix and allowing these additional articles to uncover interesting benchmarks such as for those curious about the Intel HT benefits in 2026.



[1] https://www.phoronix.com/search/Xeon+678X

[2] https://www.phoronix.com/image-viewer.php?id=intel-xeon-678x-ht&image=xeon_678x_smt_lrg


Inadmissible: Not competent to be considered. Said of certain kinds of
testimony which juries are supposed to be unfit to be entrusted with,
and which judges, therefore, rule out, even of proceedings before themselves
alone. Hearsay evidence is inadmissible because the person quoted was
unsworn and is not before the court for examination; yet most momentous
actions, military, political, commercial and of every other kind, are
daily undertaken on hearsay evidence. There is no religion in the world
that has any other basis than hearsay evidence. Revelation is hearsay
evidence; that the Scriptures are the word of God we have only the
testimony of men long dead whose identity is not clearly established and
who are not known to have been sworn in any sense. Under the rules of
evidence as they now exist in this country, no single assertion in the
Bible has in its support any evidence admissible in a court of law...

But as records of courts of justice are admissible, it can easily be proved
that powerful and malevolent magicians once existed and were a scourge to
mankind. The evidence (including confession) upon which certain women
were convicted of witchcraft and executed was without a flaw; it is still
unimpeachable. The judges' decisions based on it were sound in logic and
in law. Nothing in any existing court was ever more thoroughly proved than
the charges of witchcraft and sorcery for which so many suffered death.
If there were no witches, human testimony and human reason are alike
destitute of value. --Ambrose Bierce