P4-533 on a 400 FSB possible?

[Graal_CPM]

Hi,

The question should look trivial to any hardware expert, but I could not find any clear (yes/no) answer about it so fare.

I own an Abit TH7-II-Raid FSB 400 with a P4 1.6 Northwood and 256Mb PC800 Rambus. This mobo bios can support P4 up to 2.4Ghz.

My question is : can I use a P4 2.4B FSB 533 on this motherboard, "downclocked" to a 400 FSB?

Why do I bother you may wonder?
- well, P4 2.4B FSB 533 are more easily available to me;
- I want to be able to upgrade to 533 mobo later.

Thanx for your help guys.

Cheers.

[fuct]

Yes. Ive seen it, on that specific board, you might wanna give the mobo manufacturer a call. But on some of the boards that my company sells, it is downward compatible. (Gigabyte, Biostar) Intel, Asus not tested, or no complaints yet...

[Graal_CPM]

Thanx for insight fuct!

I wish someone had tested that on my mobo.

Doom9 forums dealing more with AV, can anybody redirected me to a good hardware forum on the net (in english or in french). The one I have came accross until now are quite lame (I did not even post).

[Rick83]

I think you can give the P4 2,4B on this board, BUT: the 533 (133) mhz version of the P4 2,4 has got a multiplier of 18. Intel does not allow to change the multiplier - but the fsb is "free"...
So if you stick this cpu on your board, you would get a P4 1,8 resulting of the multiplier of 18 together with the 400 (100) mhz fsb -> as for now you´ve got 1,6 ghz this would make no sense... ;-)

[Graal_CPM]

Thanx for this cristal clear explanation Rick!!

I'll have to get a 2.4A asap, because in my sample of best-buy shop in Paris its price is actually increasing(!) over 2.4B model.

:devil: This multiplier locking is a pure swindle :devil: