Asus P3B-F Mobo Specs

[Zealing]

Just got a question regarding the Asus P3B-F Mobo I was hoping someone could answer. A client of mine has 5 of these boards running PIII 500 chips but wants to upgrade all of them to something faster. According to the P3B-F manual, it can support a bus speed up to 150mhz (Though it states anything above 100mhz is above the spec of the chipset). How reliable are these boards at 133mhz, and if they will run fine, can a slot 1 to Flip Chip riser card be used if I were to get PIII 933 (Or thereabouts) CPU's to replace the 500mhz ones? If this all sounds good and well in theory I'll probably try it on 1 machine before comitting with the rest of them. Let me know what you think, thanks.

[Larommi]

I do not beleive that this chipset will support a 933. From looking at the website the spec it out to PIII 600 but they show jumper settings for a multiplier at 7.5 so it might be possible to get a 750 in them.

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[AlienDyne]

I don't either!
Let me say that I have the same mobo and CPU at home and when I tried a PC133 memory module, Windows started acting weird.
It's just not compatible with PC133 memory.

I wouldn't try a PIII 933 CPU on it.

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[Ruslan]

<font face="Verdana, Arial" size="2">Originally posted by Larommi:
I do not beleive that this chipset will support a 933. From looking at the website the spec it out to PIII 600 but they show jumper settings for a multiplier at 7.5 so it might be possible to get a 750 in them.

</font>

Even if this MoBo can support 933,that CPU consumes too much power from built-in step-down PWM converter(what had been originally
designed only for two-state work (newest MoBos have more powerfull three-state convertor)and has certain power consumption limitation). So,this CPU can cause overheating power MOSFETs,and,as result,unstable work whole system.
Anyway,make sure You have latest BIOS update
to support new CPUs.

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Ruslan Khyzha

[ReBoot]

Well, seems everyone has troubles of some sort.
I have run a Celeron 600 (with the multiplier at 9, and the FSB at 105mhz easily, using a matching Asus Slotket and a little voltage.
Also running a PIII 600 @ 800 using an FSB of 133mhz, no troubles, both with Micron PC133 SDRAM.
Quality of RAM, and quality of slotket are the keys here, the board will easily do (with the 1007 BIOS update) 11x multiplier (probably more).

Edit: Just an idea, why don't you use the BIOS option to increase voltage about two tenths, and increase the BUS speed on those machines? A little overclock (especially if you can get the FSB to 133, will run them at 665mhz) could save the guy a big bunch of money right now, and he may be particularily grateful.

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[This message has been edited by reboot (edited March 16, 2001).]

[Zealing]

Cheers for the info peoples, but I think it might be time for a new mobo. Although given the right circumstances you might be able to get it up to something respectable, it won't ever be 100% stable, which is what these machines really need to be. The machines in question run a lot of 3D intensive Mining software which I wouldn't want screwing up anyway. Thanks for the info though.