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Performance boost without hyperthreading

Bruce Campbell

Will reducing the number of threads on a quad core CPU speed up Studio performance? I decided to find out by turning off hyperthreading in my BIOS. 

Now, even though my 4-core CPU is only operating with 4 threads, Studio appears to be running faster. As a bonus, Dragon DPI 15 also appears to be performing better.

When I monitor the processes for these two programs in the Task Manager, I now see their CPU usage rise to around 25% or higher, while before their CPU usage used to max out at around 13%.

Even if Studio and Dragon fully use one CPU core each, my quad core i7 7700K CPU should still be powerful enough to manage all of the other processes on the remaining 2 cores.

I thought I would mention this in this forum in case anyone else wanted to try it out. I would be interested in hearing whether you experience a speed-up or slow-down in performance, or any comments you might have.

Regards,
Bruce Campbell
ASAP Language Services
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  • in reply to David Watson
    Hi David,

    No, I have not benchmarked anything.

    Studio just feels faster. And when I saw the cpu utilisation if 25% or more (up from around 13%), it seemed that my hunch had been verified.

    Both Studio and Nuance DPI15 (voice to text) appear to be more responsive.

    No other program appears to have been negatively affected, which is probably because my i7 cpu has plenty of processing power to spare. (I just left hyperthreading turned off and have not noticed any negative effects.)

    I wonder how an i3 would perform without hyperthreading if Studio hogged one of the two cores ...

    Regards,
    Bruce Campbell
    ASAP Language Services
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