Celeron 633 Overclock

[primal51]

Hi, i'm brand new to this form, and new to the Overclockers and Tweaking of computers.

I was wondering how much the Celeron 633mHz 66FSB can be over clocked.
I have the following spec for my custom built pc:

aOpen AX-34 (spec for this motherboard if you don't know: 4x AGP FSB 133 FC-PGA PIII)
ATI xPress '98 2x AGP
ATI Expression+ PC2TV
D-Link 10/100 Nic
aOpen 56k
aOpen HX08 Tower

Thanks Primal51

[Sklathill]

633 isn't a bad chip for overclocking...despite what my signature says. :) With good cooling and a good board, over a gig is quite attainable... Since my board is limited in the vCore, I can hit 950 but only with iffy stability. Back in the day, when I had my Abit BF6, I had the thing running at over a gig with around 1.9 volts. I'd say you're limiting factor will be your motherboard, which does not have a lot of FSB settings, if I'm not mistaken. Taken from the board's features..."16 Sets of FSB Clock from 66MHz to 150MHz " You want a lot more FSB options than that...

The 633 is still a good chip...but things have progressed, and now most Celeron overclockers are looking at the 800-1000 chips to overclock, struggling and often succeeding and hitting the 133 MHz FSB...

[batboy]

Realistically, for a beginner and without doing lots of cooling mods or spending lots of money, an overclock of 100 FSB (950 MHz) is a good goal to reach and can be obtained most of the time. Fortunately, those Celeron 633 CPUs are generally good overclockers. Cooling is the key with overclocking, so at least initially, you might expect to upgrade to a better CPU cooler (if you still have the Intel heatsink and fan). Using a good thermal paste between the CPU and heatsink is very important when overclocking. An extra case fan or two should also be considered since you need good air circulation inside the case. Good luck.

[primal51]

ok, i have a golden orb fan on my cpu with 5000+- 100rpm, and i have a case fan of 3000rpm (overclocked from 1500), and i have had my cpu at 715 so far... i have have only done it BIOS.

My mobo has the jumpers to go to 133mHz with a max of 150mHz which is fine for me... I don't really do anything too high, jsut curiours.

I'm just conserned about my cards, if they can handle it... my ATI Xpress '98 got really hot one day, and i was able to put a old CPU fan on it to cool it, but what about my old ATI Rage II will it get damaged? and my 2 stickss of PC-133 128mb ram

[batboy]

With that Abit ST6 motherboard, if you set it to 100 FSB, both your PCI and AGP bus will be in spec, so yes, the cards will have no trouble running at that speed. With a Golden Orb, I would not try anything higher than 100 FSB (950 MHz). Even at that speed I would use a good thermal paste and not the heat pad or tape that usually comes with those coolers. Also, you should always set the FSB in the BIOS with that motherboard, forget the jumper. Additionally, your PC-133 RAM should be perfectly ok for that setup. Good luck.

[[EXC]DDan]

what stepping do you have?
most of cB0's will do 100fsb...
some of the cC0's will even go over 1GHz :)
but you'll probably have to up your VCore to get to 100fsb+
(you can find the stepping in SiSoft Sandra)

and why is everyone so against the gorbs, i have one lol... aren't they supposed to cool up to 1.13GHz cpu's? :p

[batboy]

They might "claim" to go to 1.13 gig, but my experience and the experience of most overclockers here is they fizz out at about 900 to 950 or so when you're overclocked. Overclocking increases CPU temps, if you've increased the voltage that increases CPU temps more, running higher FSB increase mobo temps which also conducts even more heat to the CPU too. The Golden Orb was a good cooler 1-1/2 years ago when nobody was running above 1 gig, but they are obsolete now.

[primal51]

Ok, i changed the BIOS on the chip so that i have a 83.3 x 12.0 but the chip only runs at 790 and it says 83.3x9.5... so i think my multiplier is locked at 9.5 and i can't seem to get it up higher. i chaned the jumpers on my Aopen AX-34 so that the chip was set between 100-133mHz, but the computer wouldn't start up. It would power on, but my moniter would not get any signals. So what do i do? and where do i get this Siara Sandra, thing?

Celeron 633@790
256meg RAM
Aopen AX-34 (PIII FC-PGA 4X AGP ATX MOTHERBOARD)
HITATCHI DVD-ROM (33)
MAXTOR 15.5GB (running at 14.3 for some reason????)
ATI EPERT 98 AGP (Primary)
ATI RAGE/RAGE II PCI (Secondary with tv-out)
AOpen PCI FM56-PM
MICROSOFT USB Natural Keyboard
D-LINK PCI 10/100

[batboy]

All Celerons have locked multipliers. Nobody suggested for you to change the multiplier. Sounds like you either are not using the right settings or you have a heat problem or both. Time to reseach your motherboard some more and find out exactly how to obtain a 100 MHz FSB setting.

[primal51]

so, how do i find out this information?

[[EXC]DDan]

well you should be able to find SiSoft Sandra (http://www.sisoftware.co.uk/sandra) by clicking the link :)

hey 2 stars... Sweet :p

[batboy]

Ummm, you need to read you motherboard instruction manual. If you don't have one, download it from the motherboard maker's website.

[primal51]

ok, so i tries my bios, i can set it from 65x9.5 to 83.3x9.5 without any trouble, although the system did lock up on me last night after trying to get some benchmarks done. i doubt thats a big problem, i'm sure it the 1.01 and 1.96 GB HDD i have included in my tower. I can just pull them.
But when i tried to change the jumpers from "Auto" or "66-83" to "100-133" the system would turn on, but not do anything. I have a big fan and heatsink on my CPU and a case fan, plus lots of space in my tower for airflow, but still it would turn on and give my no video.
So i tried the software versions of FSB upping, like SoftFSB, but my board wasn't listed and so my system locked up again. How am i to get this to work? Can i up the voltage from 1.65 to 1.7 or something?
:mad: :(

I got a link to the info on my mother board AOpen AX-34 (http://www.aopen.com/products/mb/ax34.htm)
Maybe you can look and see if this will help :) thanks again guys for all your help, next i'm gonna try to up my P100, even though there is no information of it waht so ever and i have no idea what kind of board it is... :cool: thanks again :D