TUV4X - No 1/4 PCI Divider??

TUV4X & Celeron 1.1A (Tualation core).
Tested with 1003,1004.5,1004b.7

It seems to me that TUV4X doesn't support 1/4 pci divider for 133fsb.
Or 1/4 pci divider is intentionally blocked by ASUStek to make it hard or impossible to overclock 100fsb celerons.

I haven't been able to boot up my Celeron 1.1A with 125~133FSB.

Today it suddenly booted up and win2k started well for several times. But with my lan card (Netgear) disabled.

I ran sandra 2001se professional, Mainboard Information.
It said AGP clock was somewhere around 89mhz, PCI clock was over 44mhz and ** PCI divider was 1/3x **

This explains why my lan card was messed up.

I want to show you some evidence, but my system doesn't boot with 125~133fsb again. I can't get any screenshot. As soon as possible, I will post a screenshot.


I want to know how it's working for others with tuv4x and tual-celeron.
Even if it seems running well with 125~133FSB presently,
I strongly recommend that you check the PCI clock with sandra.

Some screenshots with sandra 2001

With FSB125, PCI clock is supposed to be around 31.25mhz.

Watch this:



Clearly, FSB is 125mhz but Speed Multiplier is 1/3x and clock is 42mhz.


And this: (FSB is 130mhz)



FSB is 130mhz and PCI clock is 43mhz.


What a disappointment for ASUS tuv4x.
It was not the CPU but the mainboard which have been preventing my overclocking!

TUV4X

So your saying the TUV4X is not a good motherboard for overclocking even with the 1Ghz Celeron Coppermine 128K L2 Cache.What might be possible 1.1 1.2 or what says can anyone give me some idea's Thanks

ZoSo420g

with the TUSL2-C and the TUV4X the 1/4 divider is only implemented at 133fsb+ i think you are not hitting the big133 for lack of voltage....try for 133 and crank up the volts and what type of cooling do you have, because i know for a fact that the TUV4X has 1/4 divider

I don't think you can up the voltage with that mobo unless you do a volt mod.

I had a P3-700 on that board and clocked it to 1000 (7 X 143) at default voltage because I couldn't change it. (1.70 Volts)

funnyperson is right.
If you want 1/4 divider, you have to hit FSB133.

(PS) Nice to see you, Korean friend ! I'm also from Korea.

AudiMan said:

I don't think you can up the voltage with that mobo unless you do a volt mod.

I had a P3-700 on that board and clocked it to 1000 (7 X 143) at default voltage because I couldn't change it. (1.70 Volts)

Click to expand...

If you get Beta bios 1004.005 you will be able to change the v-core on this motherboard. Works fine with both coppermine and tualatin

You have to browse through the ASUS ftp's to find this beta bios though...