Buitl New PC: DDR 400 is running at 333

I just built a new machine with an MSI 865PE Neo2-V Motherboard using a Pentium 4 2.40A Ghz processor with a 533mhz system bus -- this motherboard says it supports DDR 400, but when I check it in BIOS or with Sisoft Sandra it says it running at 333mhz. Is there something glaringly obvious I missed? Any suggestions?
kevotronAsked:
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DoTheDEW335Commented:
I would check the BIOS, mine had that problem and I had to change an option in the bios to Manual and put memory speed to the correct setting.
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DoTheDEW335Commented:
I would check the manual about setting the memory speed if you can't find it. Usually there is a spot you can modify it
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kevotronAuthor Commented:
Ok I guess my question is "is it not supposed to run at that speed and I am overclocking it then?" I am just having a hard time determing how to know what memorry speed ti put in what machine. If the motherboard says "supports DDR 400" doesnt that mean it will work, or is it dependent on the processor? The only options for memory bus speed are 266 and 333 - the baord itself says it supports DDR 400, but if its only giving me options for those two speeds would that be be because of the processor.  

here is something a person posted in another forum....

The 2.4a "prescott" with 1 meg cache runs at 533 (133 fsb), but some will run at 180-200 with a slight boost in voltage. I run my 2.8c at 3.5 using 1.56 volts. You need a newer board for your prescott anyway. Most older boards won't work.

just trying to understand
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crissandCommented:
In the doc of the mainboard (I have the same) is written: for 400 MHz memory need 800 MHz processor. The 533 MHz processor works with 266 and 333 MHz memory.
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kevotronAuthor Commented:
Thanks fellas!
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DoTheDEW335Commented:
your welcome, thank you. I didn't get time to get back on your last response, sorry bout that.
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crissandCommented:
Happy to help (op. cit. Jonathan Archer).
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kevotronAuthor Commented:
As in Captain Archer??? Funny thing--my brother is the spittin image of Scott Bakula. We were in Toronto at a hotel and the girl at the hotel desk asked him for his autograph--too funny!
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