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can't run cpu at its rated speed

 
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John
Guest
PostPosted: Thu May 17, 2007 2:24 pm    Post subject: can't run cpu at its rated speed Reply with quote
Hello,

I was recently forced to upgrade OS to WinXP. Now windows crashes trying
to boot-up unless I set CPU down to 450 in bios, it's a 600EB. I don't
understand ... this machine was rock solid in 98se even overclocked to
the max. I did have problems in 98 using the upgraded Asus Gforce 6800
video drivers, (any drivers except stock) experienced the same symptoms
I have now. I noticed that the new drivers enabled side banding. I've
upgraded the bios on both the mobo and video but that still doesn't
help. I have Asus P3B-F set in jumper free mode and was running at
133.0/44.33 but now can't exceed 100.3/33.43. This has me baffled, I ran
at 133 for years without a problem till I upgraded drivers and Asus Live :/

Any help would be greatly appreciated I as I would like to run this CPU
at least at it's 600 rating.

Asus P3B-F Bios 1008
PIII 600EB
Corsair PC133 SDRAM
Asus Gforce V6800 Deluxe TV in/out bios 2.10.02.10
Emerax? 300W PSU

I know this computer is at the end of it's road. However, I'm waiting
for the Asus P5K series mobos to go mainstream with DDR3 memory.

Thanks in advance

Cazz
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Barry Watzman
Guest
PostPosted: Thu May 17, 2007 7:43 pm    Post subject: Re: can't run cpu at its rated speed Reply with quote
Have you run a good memory diagnostic?


John wrote:
Quote:
Hello,

I was recently forced to upgrade OS to WinXP. Now windows crashes trying
to boot-up unless I set CPU down to 450 in bios, it's a 600EB. I don't
understand ... this machine was rock solid in 98se even overclocked to
the max. I did have problems in 98 using the upgraded Asus Gforce 6800
video drivers, (any drivers except stock) experienced the same symptoms
I have now. I noticed that the new drivers enabled side banding. I've
upgraded the bios on both the mobo and video but that still doesn't
help. I have Asus P3B-F set in jumper free mode and was running at
133.0/44.33 but now can't exceed 100.3/33.43. This has me baffled, I ran
at 133 for years without a problem till I upgraded drivers and Asus Live :/

Any help would be greatly appreciated I as I would like to run this CPU
at least at it's 600 rating.

Asus P3B-F Bios 1008
PIII 600EB
Corsair PC133 SDRAM
Asus Gforce V6800 Deluxe TV in/out bios 2.10.02.10
Emerax? 300W PSU

I know this computer is at the end of it's road. However, I'm waiting
for the Asus P5K series mobos to go mainstream with DDR3 memory.

Thanks in advance

Cazz
Back to top
Paul
Guest
PostPosted: Thu May 17, 2007 10:33 pm    Post subject: Re: can't run cpu at its rated speed Reply with quote
John wrote:
Quote:
Barry Watzman wrote:
Have you run a good memory diagnostic?


John wrote:
Hello,

I was recently forced to upgrade OS to WinXP. Now windows crashes trying
to boot-up unless I set CPU down to 450 in bios, it's a 600EB. I don't
understand ... this machine was rock solid in 98se even overclocked
to the max. I did have problems in 98 using the upgraded Asus Gforce
6800 video drivers, (any drivers except stock) experienced the same
symptoms I have now. I noticed that the new drivers enabled side
banding. I've
upgraded the bios on both the mobo and video but that still doesn't
help. I have Asus P3B-F set in jumper free mode and was running at
133.0/44.33 but now can't exceed 100.3/33.43. This has me baffled, I
ran at 133 for years without a problem till I upgraded drivers and
Asus Live :/

Any help would be greatly appreciated I as I would like to run this
CPU at least at it's 600 rating.

Asus P3B-F Bios 1008
PIII 600EB
Corsair PC133 SDRAM
Asus Gforce V6800 Deluxe TV in/out bios 2.10.02.10
Emerax? 300W PSU

I know this computer is at the end of it's road. However, I'm waiting
for the Asus P5K series mobos to go mainstream with DDR3 memory.

Thanks in advance

Cazz
Ram is not a problem. Something in the driver version for this video
card. If I reinstalled 98se with original drivers that came with the
card I could probably overclock this CPU. Like I said.. this worked fine
for years @133 but in winxp system boots fine then winblows hangs.
Maybe I'm missing something in the Bios? My Graphic apature size set at
128. Also, the old drivers didn't have side band "enabled". Installing
newer version of Asus Live in Win98 also caused instability symptoms.
You think setting jumpers manually on the mobo could help?? FWIW..
voltage is 1.65. I'll try anything to regain 150mhz! Any other thoughts
you might have would be greatly appreciated.

I've experienced hanging on my P2B-S 440BX with Tualatin. It took me a
while to figure out, because at first I thought it was a Win98SE bug.

I've found that 2x256MB PC133 is stable forever. If I use 3x256MB or
4x256MB, the computer freezes. The RAM is only running at 100MHz, so
it is not being stressed (at that speed, four sticks should work, and
there are four slots on the P2B-S).

The clincher was when I decided to try a Linux Live CD (Knoppix) one day.
Linux froze just the same way Windows did. Using only 2x256MB, I could
run forever. (I did run Prime95 Torture Test for 16 hours without an
error.)

My guess, is that the hang is somehow related to the video card, since
it is likely to be some bus master activity on a bus somewhere. The
computer never crashes, and the symptoms are always a solid freeze
requiring a push of the reset button. If the processor was pulling
corrupted data values from memory, sooner or later that would have
caused a BSOD. So to me, it looks more like a bus hang of some
sort. (Which shouldn't even be related to the Photoshop bug, so this
could be an entirely different problem.)

One bug the 440BX boards have, is called the Photoshop bug. That is
where the Vtt supply for the processor bus terminations, doesn't have
enough bypass capacitance on it. Some people solder an extra
electrolytic to Vtt to fix it. The problem is apparent in Photoshop,
and might not show up otherwise. Photoshop does long data operations
on chunks of an image, and it could be that the method used to do that,
helps push Vtt over the edge.

I don't know if there is a comprehensive list of boards that are
affected. Presumably, the issue must have been reported and debugged,
and a fix incorporated into newer revisions of boards.

So the question would be, whether your revision is known for the
Photoshop bug, and whether your symptoms are consistent with that
theory or not.

Check the revision number on your board (see post #8):
http://groups.google.ca/group/alt.comp.periphs.mainboard.asus/browse_frm/thread/209317b2df199dbf/32f6650f98b8ab32

There is an example of a fix here for the Photoshop bug (Vtt noise)
http://web.archive.org/web/20030420171020/http://www.turbotech.ch/articles2000/000815-p2bls_rework-01.html

This is an example of doing it for CUBX. Apparently this is an S370
motherboard, and the fix is going underneath the socket. My suspicion
is, that the fix could be tantalum or electrolytic, 10uF or 100uF,
and it would probably work.

http://web.archive.org/web/20030220153502/members.ams.chello.nl/mgherard/html/photoshop.html

This is a Japanese example of a Photoshop bug fix, and it looks like
they tried to use an electrolytic cap which was ten times bigger
than the one they found on the board. I'm just guessing here, because
there is very little on this page I can read :-) Note the "kai" in that
URL, and the theory goes that Katmai processors are most sensitive to
Vtt problems.

http://www.geocities.co.jp/Playtown/3715/p2b_s_kai.html

It is also possible this has nothing to do with the problem. But
I'd check the rev of the board, to see if it is a potential problem.
It could even be a different kind of problem.

So I'm curious whether the number of sticks of RAM you are using,
makes a difference. Maybe there is a second voltage on the motherboard
that has a similar problem ?

HTH,
Paul
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John
Guest
PostPosted: Thu May 17, 2007 11:33 pm    Post subject: Re: can't run cpu at its rated speed Reply with quote
Barry Watzman wrote:
Quote:
Have you run a good memory diagnostic?


John wrote:
Hello,

I was recently forced to upgrade OS to WinXP. Now windows crashes trying
to boot-up unless I set CPU down to 450 in bios, it's a 600EB. I don't
understand ... this machine was rock solid in 98se even overclocked to
the max. I did have problems in 98 using the upgraded Asus Gforce 6800
video drivers, (any drivers except stock) experienced the same
symptoms I have now. I noticed that the new drivers enabled side
banding. I've
upgraded the bios on both the mobo and video but that still doesn't
help. I have Asus P3B-F set in jumper free mode and was running at
133.0/44.33 but now can't exceed 100.3/33.43. This has me baffled, I
ran at 133 for years without a problem till I upgraded drivers and
Asus Live :/

Any help would be greatly appreciated I as I would like to run this
CPU at least at it's 600 rating.

Asus P3B-F Bios 1008
PIII 600EB
Corsair PC133 SDRAM
Asus Gforce V6800 Deluxe TV in/out bios 2.10.02.10
Emerax? 300W PSU

I know this computer is at the end of it's road. However, I'm waiting
for the Asus P5K series mobos to go mainstream with DDR3 memory.

Thanks in advance

Cazz
Ram is not a problem. Something in the driver version for this video

card. If I reinstalled 98se with original drivers that came with the
card I could probably overclock this CPU. Like I said.. this worked fine
for years @133 but in winxp system boots fine then winblows hangs.
Maybe I'm missing something in the Bios? My Graphic apature size set at
128. Also, the old drivers didn't have side band "enabled". Installing
newer version of Asus Live in Win98 also caused instability symptoms.
You think setting jumpers manually on the mobo could help?? FWIW..
voltage is 1.65. I'll try anything to regain 150mhz! Any other thoughts
you might have would be greatly appreciated.
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Guest
PostPosted: Fri May 18, 2007 2:06 am    Post subject: Re: can't run cpu at its rated speed Reply with quote
On Thu, 17 May 2007 13:28:10 GMT, John <jcazz@sbcglobal.net> wrote:

Quote:
Hello,

I was recently forced to upgrade OS to WinXP. Now windows crashes trying
to boot-up unless I set CPU down to 450 in bios, it's a 600EB. I don't
understand ... this machine was rock solid in 98se even overclocked to
the max. I did have problems in 98 using the upgraded Asus Gforce 6800
video drivers, (any drivers except stock) experienced the same symptoms
I have now. I noticed that the new drivers enabled side banding...

I recall a lot of those side banding and other forgettable AGP
"functions" caused a lot of problems back when. I'd try it with the
sidebanding off, and also try toggling any other AGP buzzword
features in bios too. Fastwrites and similar stuff.

I'd google some of those AGP buzzwords and your motherboard.
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