Setting FSB:DDR ratio?

How does one go about setting the FSB:DDR ratio on the Neo-2 (865)?
I'm trying to overclock my P4 2.4C (with HyperX PC3500 RAM), but I'm not able to get any higher than about 2.7 GHz because the DDR frequency gets too high, even if I lock it at 400 MHz in the BIOS.
Is there a setting I'm missing?  Does the board automatically set the ratio if the system bus is set high enough?
Help would be appreciated, thanks.

You don't really 'lock' it to 400. You set it to 400 which puts it in 1:1 synch with the FSB at 200. I think what you want to do is set the DRAM clock at 333, so as it steps up with the FSB it won't reach 400 until your CPU is at a higher speed.
If you get this working, please report your current benchmark and your new benchmark when not running 1:1. I'm cursios to see the net effect of increasing your CPU speed while sacrificing memory speed.

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    I purchased P31 Neo -mb and E2160 processor.
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    Quote
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  • MOVED: MSI P31 Neo and FSB/DDR ratio

    This topic has been moved to Overclockers & Modding Corner.
    https://forum-en.msi.com/index.php?topic=116635.0

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    Quote
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    Quote
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    Quote
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    Quote
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    Quote
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    Quote
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    Quote
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    Quote
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    Quote
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