I just tried to change my FSB-speed from 66 to 83 mhz in my bios because with jumpers I can only choose between 66/100/133/140/150 but when I tried to boot my system hangs immediately....
I know the are some difficuties with O/c the 500
but with 83 it will go at 622.5 Mhz.
My specs are....:
Celeron in a box 500 Mhz
qdi advance 5/133 mobo
Via apollo pro chipset
Diamond viper v770 AGP 32Mb
Pci voice fax modem
2x 64 mb Apass(hyundai) Pc-100 SDRAM
Aopen 48x Cdrom
Aopen 24x Cdrom
Aopen 24x/6x/4x Cdrewriter
Mine's running at 560 (7.5x75). Temp is around 29 deg C (goes upto 34 sometimes though). The ambient temp is around 26 to 30 deg here so it's tough to get it cooler with only the retail heatsink+fan. But hell, i've got no problems here. It won't boot at FSB = 100mhz, I only get a blank screen.
[This message has been edited by The DreameR (edited 07-14-2000).]
You may just need to bump up the voltage some if you haven't tried it. Oddly enough, I used to be able to run my Celeron 500 at 75x7.5 all day long, now I have a hard time booting into Windows. I really don't have any idea why. There have been people who have pushed the chips to 100x7.5, but I would assume they're running liquid cooling, peltiers, etc. My budget and sanity don't allow me to try pusing that right now, although the rest of my hardware minus the CPU is certainly capable of it.
Mine running rock stable at 563 (75*7.5) with intel retail heatsink/fan. Boot at 83 mhz but no go for Windows 98. I guess I should be happy with 563 since to go more further definitely need a new slot 1 tweakable mobo, special cooling and LUCK!.
Via Apollo Pro Plus Chipset mobo
Siemens 64 MB PC100 SDRAM
Voodoo 3 2000 16MB
Seagate Medalist UDMA 33
24X Cyber Drive