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I have an Alienware i7 with Kali linux, and using Pyrit could try about 2000 keys/second. I configured the GPU (nVidia 9700) and that increased the rate to between 3k and 8k keys/second, but I feel that is still really slow.

If I alter the process affinity and assign 2 or 3 cores to one task, will this improve the rate at which keys are tested?

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    I'm not sure what you are asking...
    – Lucas Kauffman
    Jul 10, 2013 at 18:05
  • Consider getting an AMD/ATI graphics card. They're typically much faster than nVidia.
    – CodesInChaos
    Jul 10, 2013 at 20:08

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Most likely no.

Processor affinity will only restrict programs from using the non-selected cores, so that program will only recieve less timeslices than it could possibly get on multiple cores.

Furthermore, taking a quick glance on pyrit shows performance metrics along with different graphics card models. This tells me that pyrit's performance is bound by the graphics card's performance - not CPU performance.

But with all things in close-to-the-metal performance, test it. For example, forcing a process to use only one core could possibly reduce cache issues.

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