Re: can't run cpu at its rated speed
- From: John <jcazz_no@xxxxxxxxxxxxx>
- Date: Fri, 18 May 2007 18:47:18 GMT
Paul wrote:
John wrote:Barry Watzman wrote:Have you run a good memory diagnostic?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.
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
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
Well I seen to have resolved the problem for the time being. Just hope it's a permanent solution.
I went into Bios and set "Plug and Play to yes" I turned FSB to 133/33. In windoz rolled back V6800 driver under Display Adapters. When prompted for a new driver location I let WinXP pick the best driver. Win went out to the internet and came back with an Nvidia ref. driver. Surprisingly, (I never trusted any MS operating system to handle P&P devices on their own let alone choose my driver for me. In the past both of those thoughts would have lead to a disaster.) All seems stable now for over an hour. :) I noticed that somewhere in the display properties with Asus 44.3 drivers the amount of video ram was reporting only 16 megs. I tried every Asus driver several times and all were unstable. I don't get it!! Although I haven't built anything in several years, I have build Literally hundreds of systems and this has given me as much trouble as the dreaded Asus P2L97 with shinny new LX chipset and AGP 1x bus on the first week it was released. What a headache! But I have sworn by Asus Mobo and even video cards in the past for their excellent support in Bios and driver updates. However, now I will be questioning my next system with regards to Asus components. I was considering the Asus P5K series mobo with DDR3 memory support and Asus 8800GTX graphics.
Well I do appreciate the help and advice from Barry, Paul and 3dfx and in the future look forward to reading your posts.
Thanks again
Cazz
.
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- From: John
- Re: can't run cpu at its rated speed
- From: Barry Watzman
- Re: can't run cpu at its rated speed
- From: John
- Re: can't run cpu at its rated speed
- From: Paul
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