PIII 500 and P2B

[TheXrGuy]

Howdy, I've been working on OC my PIII 500 on a ASUS P2b rev 1.10. I have a have a giant heasink with a 160cfm fan on the Hot side of the CPU and a water cooled Peltier element stuck to the back. Keeps things room temp or better.

My problem is this. I can get 600MHz stable no problem at all. runs day and night at 600. If I set the FSB to 124 (my next highest setting) the system will shut off just as windows starts to load. What's the deal? why is the system powering off?

I also ran the CPU on a BX6 rev 2.0 at 127MHz FSB with no problems. Same memory PC133 CAS 2. tried removing all the PCI cards and unpluging everything except one HDD. 300W 6.3amp powersupply. running the peltier off a seperate supply.

Thanks, TheXrGuy

[Pinky]

Nice setup.

Sounds like the chip needs more juice, what are your voltages?

[Phil]

I would say that seeing as the chip ran fine in the other setup then it is another component holding you back, what pci cards do you have? what vid card do you have and what harddrive do you have?

[TheXrGuy]

In reply to the above 2 posts, first the voltage is default. The P2B has a voltage jumper on the board. The manual claims this jumper is for the DRAM, chipset and AGP components. I changed the the higher "test" setting. No change.

This is a Slot one PIII just so to make sure everybody knows.

Im also running a Voodoo 3 3000 AGP, a SB 16 PCI, DLink DE 528 PCI

I removed all but the video card, no difference.

I would really like to know why this board shuts off when loading windows. Could an insuff voltage cause this? 300W supply should be lots for a PIII I would think. I've been over clocking since the 486 days and never had a computer turn off. Maybe it not uncommon, i've just never seen it.

Thanks again

XrGuy

[Phil]

it turning off to me sounds either like the harddrive or the cpu, is it a scsi or ide hardrive?

[Placid]

The voodoo 3 is a dog at high agp rates.
Throw a gf2 in it or get rid of the bx board.

[TheXrGuy]

Phil (Jun 12, 2001 08:02 p.m.):
it turning off to me sounds either like the harddrive or the cpu, is it a scsi or ide hardrive?

It's a IDE, Quantum KA 18.2 UDMA 66. running off mobo at UDMA/33.

when i get back home i'll lower it to PIO 4 or 3 and see what happens.

Cheers

[Pinky]

TheXrGuy (Jun 12, 2001 07:53 p.m.):
In reply to the above 2 posts, first the voltage is default. The P2B has a voltage jumper on the board. The manual claims this jumper is for the DRAM, chipset and AGP components. I changed the the higher "test" setting. No change.

This is a Slot one PIII just so to make sure everybody knows.

Im also running a Voodoo 3 3000 AGP, a SB 16 PCI, DLink DE 528 PCI

I removed all but the video card, no difference.

I would really like to know why this board shuts off when loading windows. Could an insuff voltage cause this? 300W supply should be lots for a PIII I would think. I've been over clocking since the 486 days and never had a computer turn off. Maybe it not uncommon, i've just never seen it.

Thanks again

XrGuy

I too had a slot 1 cpu, tried to overclock it, and it also rebooted/shutdown once windows tried to initialize... then it wouldn't boot at all until I reset the bios and it redetected the cpu settings. I think (that's usually the problem) it has something to do with Intel's slot 1 cpus. I think Intel locks the voltage on the slot 1 board to prevent overclocking... but I would leave that question for one of the more experienced members.

[ebola]

since its not a coppermine, it probably wont go much over 600 mhz. these chips are pretty much limited to 600 mhz unless you use extreme cooling measures.