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Changing thread configuration on i5 650

Last response: in CPUs
April 19, 2010 9:34:06 PM


Is it possible to have the i5 650 work with one thread to a core (totaling two threads), instead of working with two threads to a core (totaling four threads)?

I need this since I am working with a program that can use only one thread and I want it to utilize 50% of the CPU capabilites (one full core) and currently it is only using 25% of the CPU which is 100% of one thread.


Best solution

a c 133 à CPUs
April 19, 2010 10:57:47 PM

To disable Hyper Threading you will have to go into the bios and disable Hyper Threading under the CPU configuration menu.
April 19, 2010 11:26:30 PM

It probably won't make much of a performance difference (there are a few programs that do perform better with hyper-threading off). Odds are the program is already using the "real" core and not the hyper-threaded core. Hyper-threading uses unutilized portions of the CPU to perform other operations, disabling it is unlikely to bring about a gain in performance, instead of being able to do something while a memory fetch is performed the CPU will just no-op.
April 22, 2010 7:22:41 PM

Best answer selected by gideonm.