CWell1337

I will try to explain it to you in terms of your actual computer you have setup in your rig. I think that will be easier.

First of all, if I'm not mistaken, your CPU runs on an 11x multi correct? So you would look at the 11x table above. The left column is your FSB you have set in your BIOS. The top row are the "dividers" that you can set your RAM on in the BIOS (DDR2-400, DDR2-533, DDR2-667, or DDR2-800).

So let us say you have your PC OC'd to 2.64Ghz on an 11x multi. That would mean your FSB is set to 240Mhz. So, according to the table, you have 4 options on where to run your RAM (as far as speed is concerned).

If you set the divider to DDR2-400, your RAM would run at DDR2-480.
If you set the divider to DDR2-533, your RAM would run at DDR2-587.
If you set the divider to DDR2-667, your RAM would run at DDR2-754.
If you set the divider to DDR2-800, your RAM would run at DDR2-880.

So as I have said above, I made these charts, to be used by the people who don't know how to make the calculations to figure all of this out, or are just too lazy to do the work!

Hope that clears some stuff up.

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Niko-Time

Very nice thread

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Tatalebuj

Thanks for the chart, but I'm also quite new to the whole OC'ing scene. Someone posted a question about doing a chart for "intel", does that mean if I have a CD2 E6600 I won't be able to use the 9x multiplier chart to OC my Ballistix DDR2-800 (2gb) RAM?

Thanks,

Tata

stargate125645

What is the number next to the RAM speed? Like "400 /11"? Is that the denominator in the divider? It is a bit counter-intuitive the way that is organized. All the motherboards I've seen run the divider with respect to the FSB and not the CPU multiplier.

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NecroshineX

Yes, I admit....I am one of the lazy ones. Love charts!! FTW!!

CWell1337

That is correct. These charts will not be accurate if you are running an INTEL system. As for the why, well it's as simple as saying AMD =/= INTEL.

The number you are referring to is the divider number. In the example you listed DDR2-400 will run on an 11 divider if your CPU is running on an 11 multiplier.

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Norse

Just curious but is it possible to get a updated version of this that includes half multipliers? ie 12.5 ?

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The Duke

Irrelevant!
The memory controler only works with whole integers.

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CWell1337

The Duke is right, as usual

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Norse

Yea but im to lazy to work out what 2.5ghz will make the divider when using 667mhz ram :P

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