Pentium 3 650MHz..

[Makaveli_786]

Anybody overclocked one of these.. what was your highest overclock, I got this as a temporary processor and I'm thinking about going all out on it, not gonna fry it though just get the best I can out of it on air

[JLK03F150]

Whether you can overclock it at all depends on your mobo. Unless you have a really good mobo don't count on much more then 12-15%. 728-748mhz

[Makaveli_786]

How do I check my motherboard details?

[elroy]

Go here and you can see how much overclock some other people have gotten.
http://www.sysopt.com/systemdb/overclock/

[JLK03F150]

Do you know the PC's make & model # or is it a home built?
If the system is up & running you can download CPUZ or Everest Home. Both provide quite a few details on your system.

[Makaveli_786]

It's a home made, thanks for the links guys, I appreciate it.

My motherboard is made by "Micro-Star International" and the motherboard name is "MSI MS-6154VA"

Processor is "Intel Pentium IIIE, 650 MHz (6.5 x 100)", "370 Pin FC-PGA".

[JLK03F150]

Do you have your mobo manual? You can get it from MSI if you don't. Read the BIOS section & see what kind of oc'ing options the board has on it.

EDIT: I took a quick look at the manual & it seems to have some nice options. It will be interesting to see what you can get out of it. Getting to 6.5x133/33 or 6.5x140/35 would be nice overclocks.

[Makaveli_786]

I downloaded it, doesn't say much overclocking options - take that back.

CPU Host Clock (CPU/PCI)

This item automatically detects the CPU speed and sets to default
value. The settings are 66/33MHz, 75/37MHz, 83/41MHz, 100/33MHz,
103/34MHz, 112/37MHz, 124/41MHz, 133/44MHz, 105/35MHz, 110/36MHz,
115/38MHz, 120/40MHz, 124/31MHz, 133/33MHz, 140/35MHz, and
150/37MHz.

I'm talking a closer look right now though

EDIT: Actually it says a ton.. should be some nice overclocking here thanks for the help guys

[Makaveli_786]

oh by the way what do you recommend I use to overclock?

[Makaveli_786]

Sorry I meant to say what should I use to TEST my overclock, I'm shooting for CPUZ.. neway the speeds are clocked I'll have to open the case and tinker with the jumpers

[JLK03F150]

oh by the way what do you recommend I use to overclock?

I would say use the BIOS - if availible it is usually the best option. There are software solutions but those are best if you are trying to overclock a prebuilt. I have an old Toshiba with a s370 1.4 celery oc'ed to 1.56 using SoftFSB. It has no BIOS options. Take your time, start at the lowest setting and work your way up.

100/33MHz - Stock
103/34MHz, - try it
105/35MHz, - try it
110/36MHz, - try it
112/37MHz, - try it
115/38MHz, - pci is borderline
120/40MHz, - pci too high!!!
124/41MHz, - pci too high!!!
133/44MHz, - pci too high!!!
124/31MHz, - try it
133/33MHz, - try it
140/35MHz, - try it
150/37MHz. - try it

If you have never overclocked, I recommend you throughly read this guide. It explains the in's/out's & dangers involved (such as hdd corruption from running the pci bus too far out of spec).
http://forums.extremeoverclocking.co...ad.php?t=79266

To test your overclock try Super Pi 8M, 16M or 32M tests. It's a small app that can tell you if you are unstable. If it can't complete the calculation it errors.
http://files.extremeoverclocking.com/file.php?f=36

[batmeat]

What motherboard do you have? check out www.overclockers.com and look into their processer database to determine what you can do with your processor. they have a great database the lists the core type, week number, cooling, motherboards used...etc. I had a 600 EB once that I pushed to 800mhz a long time ago. It was a copermine I think that ran ona 133mhz bus.

[aramazd]

P3 650 overclocking is really thin, its the coppermine core which ranges from the 450mhz p3 to the 650mhz p3E that you have, the coppermine core of that stage is not made for overclocking, and if you do overclock it, it will be highly unstable. Just my two cents....

[DanU]

aramazd, you must be thinking of the Katamai core PIII's. The Coppermine cores go all the way up to 1.133 GHz. Here is a summary of the various PIII cores: http://en.wikipedia.org/wiki/Pentium_III

Makaveli's 650MHz PIII-E is based on the Coppermine core, so it should have a good chance of overclocking. For reference, I've gotten two coppermine celeron 533a's to 800MHz, a coppermine celeron 566 to 850MHz, a coppermine celeron 800 to 1GHz, and two coppermine PIII 933's to 1GHz. Voltage increases of up to 1.75V (or more if you're the gambling type) may be required to max out your processor. As usual with all overclocking, YMMV.

[Blitzkreig75]

Whether you can overclock it at all depends on your mobo. Unless you have a really good mobo don't count on much more then 12-15%. 728-748mhz

Not nessicarily. If the FSB is 100MHz, and the mobo supports 133MHz FSB, then a pin mod can be done to make the CPU run @ 133MHz. I've done it with a s370 Celeron 1GHz. Here's a CPUZ:

EDIT: The source I got this method from says this is only possible to go up from 66MHz to 100MHz OR from 100MHz to 133MHz.

This was done on a P.O.C. mobo that I couldn't even find a name on.

[JLK03F150]

Blitz did you break or insulate the pin? I would be afraid to break it off my 100mhz chip without knowing it can run reliably at 133mhz. I'd definitely try a insulate pin mod though.

[Blitzkreig75]

Yeah, I broke it off. I have three other 370 CPUs, so if I roached the crappiest one, oh well.

I had doubts that the Celly would run like that, myself. I set BIOS to clock it to 133MHz before and the chip would run, but crashed periodicly,(XP would run well enough, but ANY game would lock it up within 15mn. and Prime95 would cause restarts within 3-5mn.). With the mod, I got Prime95 stable without any further adjustment.

[JLK03F150]

Ah, sounds like your BIOS is a little better than mine. I have a Toshiba 440BX slot 1 mobo with a s370 adapter & a 1.4 tuatalin celeron. The cpu is nicer than the rest of the system - lol. I can only get from 100 to 112 because I have no PCI lock. The next step I have past 112 is 133 & the PCI is at 44mhz at that point. It runs folding@home 24/7 oc'ed to 1.56ghz though.

[Blitzkreig75]

I'd stop just short of recomending you break the pin off.

However, if you use the insulating method, and it's too much, reat assured that you will not cook the CPU. I saw a short vid by the guys at Tom's Hardware where they took the H/S off a running s370 P3 and it did not ruin it, (the computer locked up, but the CPU was intact and completely fine). Go for it!

EDIT: The mod causes the BIOS to see a 133MHz FSB, so your PCI clock will not be effected by this alteration.

[aramazd]

aramazd, you must be thinking of the Katamai core PIII's. The Coppermine cores go all the way up to 1.133 GHz. Here is a summary of the various PIII cores: http://en.wikipedia.org/wiki/Pentium_III

Makaveli's 650MHz PIII-E is based on the Coppermine core, so it should have a good chance of overclocking. For reference, I've gotten two coppermine celeron 533a's to 800MHz, a coppermine celeron 566 to 850MHz, a coppermine celeron 800 to 1GHz, and two coppermine PIII 933's to 1GHz. Voltage increases of up to 1.75V (or more if you're the gambling type) may be required to max out your processor. As usual with all overclocking, YMMV.

my mistake

and yes I was thinking of katmai lol