2.1V through my ol' 700.

[Jon]

Had this PIII 700 cB0 chip for 2 years now and the most I ever got stable out of it was 805MHz at 1.85V since that was all my motherboard (Soyo 7VCA) gave me.

Just had an old Tyan die that I had this chip on and decided to put the PIII back on the Soyo for my girlfriend...but not before experimenting first.

See, I had a Celeron 600 @ 900 on there that wouldn't overclock before I wrapped the vid pins on it for 1.97V. I thought that was quite high but it ran perfectly stable and cool at that voltage for the past couple of weeks...24/7 with SETI I might add.

I decided to wire wrap the PIII for 1.90V and would adjust if needed in BIOS. Booted up and it was at 2.13V! Ouch! Anyway, I set it to 133MHz bus (which it usually never even POSTed at before after 2 years of trying) and bam! Right into Win2K at 933MHz. To beat it all it's running at a very cool 34.4C and so far, so good.

Checked the database to see how many were running at this high a voltage and the closest I saw was 2.05 so needless to say, I'm a bit worried, but at the same time my temps are good and seems to be happy there. Maybe it just needed that extra little oomph to get there.

Going to keep an eye on it for the next few hours and hope it's happy at it's new toasty home and then leave it where it is...hoping that old Tyan will work with this left over Celly now until I get that dual AMD rig put together...hate extra parts lying around.

[Yodums]

Excellent you shouldn't be so worried. The chip is being outdated and it won't kill the life of the chip since the chip is not so expensive and at the moment if you have cash the 1000 Celeron could be a replacement if you kill the chip or anything.

Have Fun.

[outhouse]

Good job Jon.

I think you will be fine but we both know anything over 2.00 is a gamble, i'm in the same boat as you my p3 1g has been at 2.1 for 6 months running seti 24\7 and at this point i'm tempted to try for 2.15 to see if i can squeeze her to 1300 :) but not that tempted i have not tried yet. Well if i fry her it will give me a good excuse to get something better but she's been a good chip so i'll show some mercy for a while :)

[muddocktor]

According to Chris Hare's electrical page, the max vcore for your P3 700 is 2.1 volts, so you are pushing it at it's max right now. As long as it stays cool, I think that you should be fine. So what if it will only last 3-5 years instead of 10.:D

[Yodums]

Yup true by 3-5 years your chip will maybe be worth nothing and you can replace it with some modern chip then.

outhouse you sound so funny explaining your chip hehe..

[Jon]

Well, I've got a 600 Celly that does 900+ if I do kill it. As long as it don't take the board with it if it goes, I really don't care.

I bought that chip just for hitting at least 933MHz and by hell, if it takes 2.12V to do it, so be it.

Temps started climbing a little on it as it hit 39.5C after about 3 hours of SETI...I blame most of this on the fact that I don't have any exhaust on that PC at the moment. No more headers for the fan in there. I'll splice something together tomorrow to fix that and it should be OK at around 35C with good circulation. Kind've made me mad that after 2 years of being chicken to lay the voltage to it, that that was all it took to get it there.

Has been one heck of a chip though...I sure have beat it to death.

[Mr B]

I've always been leery of pushing more than 2.0v thru mine, but recently I decided, what the heck, go for it...

I've been at 2.1v for a while now, and the 700E has been humming along quite happily at 975MHz. :D

I gotta confess though...I got the 700E after reading of so many people hitting 1GHz with theirs... so I'm actually still a bit dissappointed...:(

But, 975 is nothing to be ashamed of. I run Folding, and it's been rock solid stable for quite some time now at these settings... As long as the HSF you've got is up to snuff (and I know yours is, Jon), you should have no worries.

Like was said, even if this knocks the "life expectancy" down from 10 years to 3 to 5 years...it'll still be well out of date 3 (or more) years from now, and long since upgraded.

As long as you have something to fall back on, (the Celeron) let 'er rip!!

[Jon]

Heh, I just want it to last another month or two, haha.

I'd say that will be the next PC to get overhauled so the board and most everything else will probably find its way into the classifieds. It's the PC i handed over to my girlfriend and I may put a good Morgan cored Duron system together for her. Not sure yet. I'd really like to put together a P4 system too since that's the only thing I don't own other than an Alpha system at the moment...I'd probably want that for myself though, haha.

Ah well, in the meantime I'll just be happy that old grump of a chip finally did what I was trying to tell it to do for the past couple years. I probably will never have the heart to part with it anyway (if you couldn't tell by all the other junk I'm still hanging on to).

[KILLorBE]

I've been running my 600E (cA2)@840 2.1V+(2.1V in BIOS 2.13V according to MBM) for about 6 months, I even tried 2.15V (2.18V MBM) to get it higher...it was a no go.
So I decided to get some better cooling, got a 62W peltier from a friend and got it running @888 2.0V (2.03V MBM) temps dropped a lot (24C full load running F@H and 3DMark2k1).
So I said to myself lets take it a step higher....900 it did load windows but got explorer errors, bumped CV to 2.1V still got errors, next step was 2.2V (could change it on my slocket to 2.15V but I was too lazy:D ) So 2.2V (2.24V MBM) it was, result ~90% stable.

I'm gonna order a 80W peltier and hope I will get it stable @900, when it is stable @900 I've reached my goal (50% OC:cool: ) and will built a new system.

[QSW]

I get different results on different motherboards with the same 1ghz (100fsb)cD0 P3.

on the be6II2.0 - 1290 @ 2.00v, cpu will not go any higher even when voltage is increased.

SH6 - 1360 @2.10V

BX6R2 1380 @ 2.05V

MBM shows Vcore between 2.06-2.10 when running folding@home. Max temps is abt 40C

[outhouse]

It took 6 months before my cpu would accept higher CV, before it never helped then one day i thought i would try and i was supprised it took, i'll blame it on a long burning in and really good cooling.