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BIOS Setting: 'CPU in order queue'

greghux
greghux asked
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(see previous question id no. 20191964)

I found the problem. It was a BIOS setting, but I am unsure what it does. Please help if you know what this does! Bios is AMIBIOS:

'CPU In Order Queue' was incorrectly set to '1-level'.
Set this to '4-level'.

Memory benchmark doubled in transfer rate; CPU performance has also increased by at least 2x.

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I think when set to 1 this forces the CPU to process one instruction at a time sequentially. This may sometimes be necessary for compatibilty with old and badly programmed CPU timing dependant software. However, when the CPU can perform out of order, parallel and speculative execution of instructions in the pipeline then it can work much faster.

regards,

Road Warrior

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Commented:
Thanks Roadwarrior

I might hold on a few days and see if I get any other answers, otherwise the points are yours.

Greg

Author

Commented:
This sounds reasonable to me. And noone has offered me any alternative answers.

Author

Commented:
This sounds reasonable to me. And noone has offered me any alternative answers.