CPU host frequency \ VOGONS

CPU host frequency

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First post, by atom1kk

Posted on 2022-03-28, 11:14

atom1kk Offline

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Hi on my new P4 board I have an option to change the CPU host frequency.

What is it exactly? the standard value is auto and line lower is "actual frequency" with 100MHz but greyed out. if I lower this value, can I also slow down the CPU for some older games? But its not the FSB or is it?

I have a P4 2.0

Reply 1 of 3, by Horun

Posted on 2022-03-28, 13:19

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Yes it is likely for FSB and you probably could slow the bus down to 66Mhz.
What exact make / model motherboard is it ??

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Reply 2 of 3, by atom1kk

Posted on 2022-03-28, 13:37

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its an Asrock P4i45 GV. The lowest value is 50mhz I can go down. So theoretically i could slow it down to 1 GHZ?

interesting is, that the board has no 12V connector. only the big 20pin one.

Reply 3 of 3, by rasz_pl

Posted on 2022-03-29, 19:41

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You can only go lower? usually you would want to go up for OC 😀
P4 FSB is quad pumped, so 100MHz = effective 400MT/s https://en.wikipedia.org/wiki/Quad_data_rate
yes, lowering this will slow down CPU

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