tenchimuyo93 wrote:got a problem i just noticed and was wondering if flashing the bios would help {ive asked how in another thread but im still scared of making a paperweight so i havent} but the bios only shows a speed of 550MHz max but windows and the BP6fsb program show what i have them clocked to.
had to bring the OC back down to 552MHz [85fsb] got unstable once and didnt wanna risk it.
or im a cool with what i got {its a RU bios with the hpt 1.22?}
OK, I wasn't paying attention earlier. Don't flash the BIOS if everything is working but the POST reported speed.
Now this. I hope it isn't too confusing. Take your time with this info until you understand whats happening as you try it. Then you will be a genius like me.
As you know Mendocino Celerons are designed for 66FSB. Its been discovered though that most will run fster then 66 to above 530MHz or higher but hit a wall somewhere below 600MHz, no matter what they are "rated" for.
The 440BX on the BP6 bios gives lots of FSB options that are really nice. Remember the divider points change at 92 and 124.
The AGP, PCI and IDE are running at stock speed at 66(divided by 2=33) and at 100(divided by 3=33.3).
Divider 2:
66-91
FSB at 67-91 increases the OC pressure of everything else on the board. Note that lots of hard drives get flaky above 80 and who knows how much OC your PCI cards can handle. I bet something else was the choke point that got unstable...not the CPUs.
Divider 3:
92-123 (BP6 has no settings between 110 and 124)
FSB at 92-98 UNDERCOCKS everything else but keeps OC on the cellys and the ram. You will see a lot of sucess stories at 92FSB but none that I know of at 91 because the divider changes.
Divider 4:
124 & 133 (only 2 settings)
You won't get there so its irrelavant. I am not aware of anyone who was ever able to run at 124.
Why don't you try 92FSB and see what happens. It will underclock all the PCI/AGP/IDE componants, and be in the easy range of the BX and your PC150 ram. The CPUs however will be cooking hard at nearly 600 so you will probably have to boost the voltage to 2.2. Try it once and see if it will even POST up. If so let it try boot. If the boot fails it will be the fault of the CPUs for sure. If it is sucessful you may be able to drop the voltage on the CPUs.
FWIW, I use factory Global Win HSFs. I lapped mine smooth(they are grooved from the factory) and lapped 366s until mostly copper instead of silver showing. Now they run at 550 on 1.85V(unstable) and stable at 1.90V. I once pushed a pair of 500s to 2.2V without damage just through booting then shutdown again, but I would never leave them that hot for running.
Good luck.
There are *almost* no bad BP6s. There are mostly bad caps.
No BP6s remaining
Athlon 2800
Sempron 2000
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P-III 850@100