Please help with CUBX & 566

[EnoughOfThis]

I am a first time overclocker, and just recently acquired an ASUS CUBX and celeron 566. I have a few questions and would really appreciate it if some helpful people could give me answers. My specs are:

CUBX
Celeron 566
Golden Orb
PC133 128MB RAM
Voodoo3 PCI
Maxtor Ultra DMA 33

Question #1
It runs very stable (ie, no crashes yet) at 708 (83FSB) with the default 1.5 vcore. However, in order to get it to finish loading windows I have to set my hard drive to UDMA of 0 in the bios... it doesn't work at 2. Is there something I can change to fix this other than leaving it at 0?

Question #2
I can't get my cpu to boot (no video signal) at any vcore above 1.60, even at 66 FSB. I heard another person with a CUBX say something similar, so was wondering if it was a problem with the board? At 1.60, my cpu doesnt appear to be overheating (bios gives me readings of 25 to 31C)... or is that too hot for an idle?

Question #3
I can get it to boot at an FSB of 100 & 103 with only a 1.55 vcore. But it stops when loading windows. 1.6 vcore doesn't seem to do much better either. Unfortunately, I can't use any settings higher than that because of my problem in question 3. Are lockups like that attributed to not enough voltage or overheating?

Question #4 (last one =)
My power supply is pretty ancient, 6 years old. The voltages it puts out slightly fluctuate according to my monitoring software. Usually the 12V vary by up to -0.400 , and the 5v's by +- 0.200 . My vcore reading doesn't fluctuate, but it can be up to 0.4 higher than what I set the vcore at in the bios. Are these fluctuations normal or could they cause problems? I will eventually get a new power supply but am curious if it could be causing some of my problems.

Thanks.

 

[SupAcHinK]

By the way you describe your problems don't sound too much like a newbie ) Usually it's not the chip or Mobo, but the parts.
Some parts just don't like certain bus settings. A card could run fine at 100mhz and just not run at all at 83mhz. Could be the power supply or the hard drive since both seem to be a little out of date....Try cranking up the voltage to 1.8 and run a higher bus 1.6 seems a little low to be trying to get some high speeds. 1.8volts should do the trick. Dun worry it won't fry the chip...MORE VOLTAGE THE BETTER!...to a certain extent

 

[garrison]

mh,
i'm not totally sure about this but..
in the recent bx mobo roundup at www.tomshardware.com I should have read smthing about a problem of the cubx OCing the CelerMine 566.

i'm not so sure, but take a look.

 

[EnoughOfThis]

Thanks, I just read that article and they did mention the problem I was having. Kind of a relief to see it is a common problem, but also sort of depressing as I now have a dilemma: Wait to see if a bios upgrade fixes the problem, or incur the 15% restock fee and exchange it for a different mobo =(.

Thanks for the replies.

 

[Painman]

Well, the 1006 BIOS for CUBX is available at the ASUS site. Here's what they have to say about it:

CUBX BIOS Ver. 1006. 07/12/2000
1. Update option ROM of CUBX onboard CMD chip.
2. Support 566MHz and 850MHz CPU with clock ratio equal or greater to 8.5x.
3. Fix Windows 2000 cannot be installed if all PnP devices in Super I/O are disabled.
4. Revise Coppermine Vcore limit for 128K cache coppermine.

As for the disk trouble, at 83 MHz FSB the PCI bus is running at 41.5 MHz. Historically, Maxtors don't like overclocked PCI that much. See if the bus frequency menu in the BIOS offers you different PCI dividers for the 83 MHz setting, I know that it does have 2 entries for 133 MHz bus, one with 33.3 MHz PCI and one with 44.3 (um, why?).

At any rate, try the new BIOS, it looks like they have been working on Celeron support with it.

-Pain

 

[broadband]

I've had a CUBX for two months now and can't get the 850 working either. Been trying everything under the sun, so wish us all luck.

UPDATE!!!

Asus has posted BIOS 1006.005 (I think) at:

ftp.asuscom.de/pub/ASUSCOM/BIOS/Socket_370/INTEL_Chipset/i440BX/CUBX

Filename is 1006cu05.zip

Worth a shot, I'm about to flash mine.

broadband

 

[Painman]

Yep, there it is.

Here it is, linkified...

ftp://ftp.asuscom.de/pub/ASUSCOM/BIOS/Socket_370/INTEL_Chipset/i440BX/CUBX/1006cu05.zip

-Pain

 

[EnoughOfThis]

Hey, thanks for the link. Unfortunately, the update still doesn't seem to address the problem =(. Still won't post at any vcore setting higher than 1.60 . I hope they keep plugging away at it till it works. Else I better get used to this 708mhz as the restocking fee + shipping is just enough to deter me from returning this mobo.

And oh yea, there is only one PCI divider for 83 =(. Ah well, I need to shop for a new hard drive anyway. Any suggestions, since it appears I will be running at 83 for awhile?

 

[garrison]

buy the 700e cb0 and sell the celermine to a friend.
eheh,
this is not exactly the cheapest solution,
but at least at 133MHz you can set the 1/4pci bus and you can still use yr cubx (great motherboard).
waiting for solving of compatibility issues or bugs is very frustrating, i don't want to remember the days of my k6-2/300 + ali chipset + riva tnt.

 

[UserX]

Hi!
My WD 7200rpm 15GB drive seems to work well at 83MHz, though I didn't run the system lots and lots at 83MHZ till now.
Hey, is this really the latest bios??? I recently got just a "1006", before had something like 1006-4 which meant beta-4. Now, it says to be the final 1006 version! But what was mentioned above seems to me as beta-5 as it is called 1006-5. Be sure that you got the final 1006 bios!
Good luck! Hey, I remember a thing. When I tried to up my voltage (with that old bios) and the system didn't post, the bios decreased the voltage on it's own. To get the system to work (at 800 with my cel533) I had to choose a voltage of 1.6 and a frequency below 100MHz. Then boot completely. After that, leave windows and restart the system while going into the bios menu again and finally set the fsb to 100Mhz.

Edit: Still only works this way (for me):
Choose 1.6V and FSB83, boot into Windows (or whatever) close and restart changing fsb from 83 to 100 in your bios. It's strange but it doesn't want to work when I come from FSB66 and 1.5V and change it directly to 1.6V and FSB100!

See you!
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