My PIII 850 Slot 1 100 fsb big o/c probs

[Intelion]

Hello everyone,
I am new here and would be very very grateful if any of you brainy guys could help me with my overclocking problem.
First my specs

Abit be6 rev 2 board
512 meg of cas3 micron pc133 ram
PIII 850 100 fsb
20 gig wd caviar 7200
30 gig IBM 75 gxp 7200
10 gig maxtor 45 7200
hercules 3d profit mx
ricoh mp 7200a cd/rw
samsung dvd

two floppy drives
I hope this helps but it seems everyone else with this board and chip can easily overclock it to past a gig but as soona s I get near a gig I start to get registry errors and the thing falls over.
It still has a stock fan and heatsink still because 1 I don't really want to break it and 2 If I did could it be put back to the way it was,maybe I worry too much please advise I would be very very
gratefull.

[RedDeathDrinker]

Stock Fan and heatsink is your problem. The core will be running at a dangerously high temperature, that's what's giving you the registry errors........

More cooling is required to go faster.

[Intelion]

sorry, maybe I never made myself clear enough some of the other
overclocked computers have standard heatsink and fans.
That is what i don't understand I mean checkout this very site
there are loads of them running at past a gig on standard Intel
components its really got me puzzeled.

:rolleyes:

[Pinky]

It depends on a variety of things. The particular cores that the 850 P3s were made from are not the best overclockers (the multiplier is high on that chip at 8.5). They tend to require extra voltage and in turn generate extra heat. Because of their 'stubborness', these processors have a harder time reaching 133 mhz (for a good PCI clock). 120 is alright, but the PCI is running at 40mhz (120/3 divider) and this can cause some of the PCI components to fail. 133 is ideal since the PCI runs at 33 (133/4 divider). because of the high multiplier, setting to a good PCI / bus speed, say 133, will clock the chip to its potential maximum. Some chips can make it, some cannot.

Try setting the processor voltage higher, keeping in mind the temperatures should NEVER exceed 50C, by .5V increments. Do not go higher than 1.95V

I'd suggest setting the voltage to 1.85V, bus to 133mhz. If it doesn't boot all the way into windows or any other errors occur, check the temps. If the temps are OK, raise the voltage to 1.90 If the temps ARE high, do not increase the voltage any more and instead lower the bus speed.

The goal is to run the processor at the highest bus speed with the least amount of voltage (and hence least amount of heat).

[alan]

I've got my P3 850 running @120 FSB... but i did change the original HSF to a dual fan.

also.. this is the best I've done on it AND it still runs at temps a little higher than i wished, but it is stable.

I don't care to cool it anymore because i'll be changing CPU's long before this burns out (finges crossed)

[[OC]_SR20DE]

The core will be running at a dangerously high temperature, that's what's giving you the registry errors........

No, the registry corrupts are not usually caused by the CPU with high temperature nor the CPU being stressed from OC'ing. The registry corrupt usually comes from the Hard Drive being stressed out from OC'ing. And yes Pinky is right. His last post explains the cause of your problem all well. Hahaha Pinky explained all that I don't need to say any more!! no more comments, hahaha.

Btw, Intelion, you listed three different Hard drives. Which one are you using? Are u using two drives as a Raid setup? I wasn't sure since you said "Abit BE6 rev2 board".. Is it a BE6-2 Rev.1 or BE6-2 Rev.2 ?? anyways, if you haven't used the IBM Deskstar 75GXP on your machine, try it. That's a very very good Hard drive and handles well when its PCI bus is OC'ed high.

[Intelion]

Do you know what I think you may have got it,oh yeah and by the way my board is the one with the highpoint 366 driver.
The thing is my C:\ is the western digital on account that I bought
that one first and yeah the IBM I just use for storage and the Maxtor is used for my other os win 2000 prof.
When I run benchmarking software like sandra the IBM sooo
kicks the other two drives asses so that could be the problem
when I overclock it the WD can't take the pace:) so you may have got it for me,the only thing is I have just this week done a new and complete reinstall of both my operating systems hmmm.

[[OC]_SR20DE]

Great! with all our help, I hope things will work out for you. Have fun tweaking and good luck :p