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166FSB & 1/5 divider with the KT333...

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May 14, 2002 12:06:18 PM

okay, ive just upgraded to the epox 8k3a+ (kt333 chipset)
and im running at 166fsb quite nicely.

thing is, both sandra2001te and sandra2002 think that im using the 1/4 divider, and it gave me a bit of a shock when i saw that.

but i CANT be using the 1/4 as that would give me a PCI speed of 42Mhz, and my hard drives just CANNOT handle that. on the previous kt133a mobo they could only do 154fsb/38.5pci, tops!

so does anyone know of a program that properly reports fsb/pci/agp/divider values?
(allready tried wcpuid too)

cheers

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May 15, 2002 4:44:55 AM

I know that 166FSB & 1/5 divider is also possible with both the XP333 (ALi) and the 7350KDA (SiS).

What's the frequency, Kenneth?
May 15, 2002 5:11:46 AM

just wanna be certain its being used in my case
99% sure... theres no way my pci devices could stand 42mhz for very long

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May 15, 2002 4:21:24 PM

That’s very interesting…
At least in <A HREF="http://www.pcstats.com/articleview.cfm?articleid=989&pa..." target="_new">here</A> they say that KT333 doesn’t support 1/5 PCI divider or 1/3 AGP divider:

<font color=red>“The KT333 chipset is nothing more then the KT266A with support for a 166 MHz memory bus. The KT333 still doesn't support a 1/5 PCI or 1/3 AGP divider <i>yet</i>”</font color=red>

They say <i>”yet”</i>, so are the new ones coming with 1/5 and 1/3 dividers activated?

Hope so…..

I’m looking for a KT333 based motherboard too, so please post whatever you get about those dividers
May 15, 2002 11:45:08 PM

intrusting
well i did a bios update last nite, and the updated bios now shows the PCI/AGP speed just below the selected fsb.

the 1/5 divider automatically kicks in at 166fsb or above on this board, but no 1/6 (yet)
heard rumors that it may appear in a new bois revision (unlikely in my opinion)

i think most of the overclockable kt333 boards have the 1/5 divider, its just not 'officially' supported.
(why would it be when all AMD cpu's are still rated for 133fsb)

gotta try some lengthy divx again... hopefully the bios has ironed out the crash i had.

P.S. while i now know the board IS using the 1/5 divider, silly sandra still says its 1/4.

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May 16, 2002 12:57:21 AM

Quote:
the 1/5 divider automatically kicks in at 166fsb or above on this board

Those are very good news! :smile: :smile: :smile:

About the 1/6 divider, think that it will be “reserved” for the 200 MHz BUS with the KT400, and it won’t come with the next BIOS update (hope I’m wrong); however, some current 333 motherboards have been able to reach that speed, after all at 200 MHz PCI is at 40 MHz and AGP at 80…….
May 16, 2002 2:10:19 AM

not that it matters terribly much
ive done lots of benchmarks (about to post a huge post in the CPU overclock forum)

and they show my CPU in most cases is well and truly bandwidth happy at 166fsb.
ill get more out of the epox by using the extreemly high cpu voltages to push my cpu further.

plus, my particular components have enver been fsb happy, 38.5 is about the limit for my drives.

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