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Best Performance processor in ARM1136 or ARM926?

Ranjith Kumar
Note: This was originally posted on 2nd April 2009 at http://forums.arm.com

Hi Friends,

           Can any one tell me, which is best processor in ARM1136jf-s or ARM926ej-s (performance wise).


Regards,
Ranjith
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  • 0 Arm Employee Badge
    Note: This was originally posted on 21st April 2009 at http://forums.arm.com

    How are you defining "best performance"?

    ARM926 will generally need less cycles than an ARM1136 for a given workload - this is caused by the longer pipeline in the ARM1136. However it is possible to clock the ARM1136 faster, again because of the longer pipeline, meaning that the ARM1136 takes less elapsed time than the ARM926.

    Edit: It is also worth making sure that you have turned on branch prediction and other program flow assistance which is available on the ARM1136 - these make branches and returns from functions faster.
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  • 0 Arm Employee Badge
    Note: This was originally posted on 21st April 2009 at http://forums.arm.com

    How are you defining "best performance"?

    ARM926 will generally need less cycles than an ARM1136 for a given workload - this is caused by the longer pipeline in the ARM1136. However it is possible to clock the ARM1136 faster, again because of the longer pipeline, meaning that the ARM1136 takes less elapsed time than the ARM926.

    Edit: It is also worth making sure that you have turned on branch prediction and other program flow assistance which is available on the ARM1136 - these make branches and returns from functions faster.
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