Celeron 667(66) to Celeron 1GHz(100)

[jaze]

I'm using an ABIT BE6-II (Slot 1) MoBo. 256MB PC133 SDRAM, 32MB TNT2 AGP video card. Adaptec 2903B SCSI controller, 3Com ethernet card, MoBo supplied IDE controller, and an HPT 366 ATA66 controller.

I bought a Retail 667 Celeron CPU, a Golden Orb Fan, and an ABIT Slotket.

I want to stay with standard FSBs (66, 100, & 133) due to the fact that the PCI & AGP slots would be kept at their correct speeds through the use of the multipliers in the BIOS.

I mounted the CPU onto the Slotket and added the fan and installed the unit. I didn't change any of the automatic settings on the Slotket. I left the case cover off.

When I started the PC, the BIOS recognized the 667 CPU just fine.

I went into the BIOS & changed the FSB to 100, corrected the multipliers to 1/3 & 2/3.

I tried to reboot the PC with no success. I increased the I/O voltage in steps of .05volts at a time from it's default of 1.65 all the way to the BIOS's maximum of 1.90 volts.

Still won't reboot at all.

I'm stumped.
==============================
What steps should I take to make this CPU work at 100MHz FSB?

Do I change the core voltage?
Do I change the jumpers on the Slotket?
Do I move the FSB up in small increments, letting the CPU 'burn in' until I reach 100MHz FSB?
Any other suggestions?

-Jay K.

[LutaWicasa]

Well, first welcome to the best board around!! Now to say something that won't be real popular. I'm not an Orb fan,get something better. I've seen a number of peeps having probs with the Abit slotket. I prefer the MSI 6905 Master ver2. Also 667's can be a prob. I would first up the voltage and burn-in at default for a while, then see where I stand :)

[stompah]

or you can try to run it a bit less than 100mhz fsb. It will slighty underclock the PCI & AGP but it will get you up there. Then I would slowly creep up to 100mhz.

I hate to burst your bubble but the 667 isnt the best o/cer the 600 & 633 are slightly better due to the multipliers.

[Pinky]

stompah (Jun 06, 2001 05:51 p.m.):
or you can try to run it a bit less than 100mhz fsb. It will slighty underclock the PCI & AGP but it will get you up there. Then I would slowly creep up to 100mhz.

I hate to burst your bubble but the 667 isnt the best o/cer the 600 & 633 are slightly better due to the multipliers.

I have to disagree, I've seen only good results with the 667 because of the 10x multiplier...

I will concede that your cooling MAY be inadequate, though I doubt it. I would first burn-in the cpu at default settings at 1.9v for at least 24 hours and try again. 4/5 celeron 667 can make 1 ghz with the stock Intel Heatsink and fan, you should keep trying as these are good overclocking odds.

[*spazzed*]

I think that that gorb would suffice.......remember it's a celeron, but you could always do better :)

[jaze]

Pinky (Jun 07, 2001 10:36 a.m.):
stompah (Jun 06, 2001 05:51 p.m.):
or you can try to run it a bit less than 100mhz fsb. It will slighty underclock the PCI & AGP but it will get you up there. Then I would slowly creep up to 100mhz.

I hate to burst your bubble but the 667 isnt the best o/cer the 600 & 633 are slightly better due to the multipliers.

I have to disagree, I've seen only good results with the 667 because of the 10x multiplier...

I will concede that your cooling MAY be inadequate, though I doubt it. I would first burn-in the cpu at default settings at 1.9v for at least 24 hours and try again. 4/5 celeron 667 can make 1 ghz with the stock Intel Heatsink and fan, you should keep trying as these are good overclocking odds.

I've perused the CPU database, and getting 1GHz from a 667 is pretty common. I've raised the voltage to 1.90, and I'm running HotCPU tester to burn it in. If the test goes fine at 66MHz, I'll raise it in steps (83, 90 & 95) till I see if it's OK at 100MHz. Then I'll reduce the voltage until I see the limits of the CPU. If I fry the thing, it's only $50. I'll keep you posted as to the progress. I should have a solution in a couple of days.
-Jay

[Placid]

jaze (Jun 07, 2001 11:19 p.m.):
Pinky (Jun 07, 2001 10:36 a.m.):
stompah (Jun 06, 2001 05:51 p.m.):
or you can try to run it a bit less than 100mhz fsb. It will slighty underclock the PCI & AGP but it will get you up there. Then I would slowly creep up to 100mhz.

I hate to burst your bubble but the 667 isnt the best o/cer the 600 & 633 are slightly better due to the multipliers.

I have to disagree, I've seen only good results with the 667 because of the 10x multiplier...

I will concede that your cooling MAY be inadequate, though I doubt it. I would first burn-in the cpu at default settings at 1.9v for at least 24 hours and try again. 4/5 celeron 667 can make 1 ghz with the stock Intel Heatsink and fan, you should keep trying as these are good overclocking odds.

I've perused the CPU database, and getting 1GHz from a 667 is pretty common. I've raised the voltage to 1.90, and I'm running HotCPU tester to burn it in. If the test goes fine at 66MHz, I'll raise it in steps (83, 90 & 95) till I see if it's OK at 100MHz. Then I'll reduce the voltage until I see the limits of the CPU. If I fry the thing, it's only $50. I'll keep you posted as to the progress. I should have a solution in a couple of days.
-Jay
Well once you get your pci bus too far out of spec. you will get problems. If you can manually set your pci divider fine. But if you can't at 83mhz you will be pushing 41.5mhz on the pci bus.
Goodluck.

[martialcomp]

My configuration is almost EXACTLY the same. I am running an Abit BE6 II, chrome ORB style cooler, Celeron 667 OC to 1000 at 1.85 volts. 192 meg of ram. Make sure you use thermal compound. The 667 will run at a gigahertz, but, I really do believe that a gigahertz is very close to the maximum for this core design. I have experimented with speeds up to 1070, but it is not stable and requires much more voltage. Just not worth it.

[jaze]

I gave up! I burned the CPU in using HotCPU Tester Pro for 12 hours at 1.9v, then restarted at 75MHz. I couldn't even get windows to boot. I'm sending the stuff back (at a 15% restocking charge) and I will buy a PIII.
-Jay

[JaY_III]

i think 83 will be harder to get than 90
with 90 you can run your pci speeds in spec (30 mhz) 83 you are 41mhz....
try 90 1st
make sure your agp divider is 2/3
amd your pci is 1/3
if you dont do these thinks you will not have a chance of overclocking at all

[DocClock aka MadClocker]

Yea, if it won't post @ 75mhz, then I would send it packing, If you want a P3 to do more than a gig, then you should talk to Da Nut...he has some PIII's(700E) that will do a gig or better.
I am waiting to see if Powerleap will make a slot converter for the Tualitin PIII's....I think they might be capable of getting 1.4g

[LutaWicasa]

Before sending eveything back I'd try a diff slotket. I was real serious about a number of people having probs with Abit slotket. Of course some folks don't have the patience to work with something :)

[jaze]

You're right Luta. For the money and the dubious gain involved, I lost patience with this project.

I've had great success OC'ing a C366 to 550 and a Pentium Pro 333 overdrive to 500. That last was a tough one. I had to locate a socket 8 to slot 1 bridge (in Canada), and slowly bring it up to 100MHz. But it works, it's stable and with it's 512KB of full-speed cache, it runs my server to perfection.

Thanks to all of you for all your suggestions. I got some other responses from the overclockers newsgroup, but the concensus from most seemed to be 1) try a different Slocket & 2) get a socket 370 MB.

The price on a PIII 1GHz is low enough now, and dropping by the week, that I think I'll just buy that.

-Jay