my friend have m789 mobo fsb 133 with onboard c3 cpu(via samuel 2) which running about 800mghz...

he also has 256 ddr

he want to try overclock the speed of the cpu but it cant.i mean when he enter the cmos and enter the cpu pnp setup,the screen just shown the speed of ram only(ddr frequency)..and nothing else...

what is that problem?is that mobo/cpu cant overclock at all?


do help him guru!or just share experience..

Passively cooled cpu's don't take overclocking well. But still can be overclocked. Your friend knows what he's doing or not?

PM Kagaya...he's got the same board.

I got my 733Mhz C3 up to 1.1Ghz

Uhm...wats C3 ?
I got PIII 1Ghz can overclock?

Don't have the screenshots for 1.1Ghz


If your bios has crappy options, use software instead.

http://www.mini-itx.com/hardware/overclocking/

This post has been edited by sniper on the roof: Jul 11 2006, 09:46 AM

Hmm mine isnt C3 and previously using another board i tried to change the multiplier after that my pc cant turn on.

wow 13 mins for 1M super pi?
wonder how long it'll take for 32M super pi

Its a C3, which is quite an old processor, not much to expect from it for Super PI.

i oni managed to oc my 500mhz to 600mhz...dunno why cant go more than that

urghh after i overclocking it from 800mhz to 1ghz it often freezing..damn proc

but i will get sempron later..and gonna thrashed this c3..uwekk

can a intel pentuim 3 800mhz overclock? and how to do it?

Very much like my C3 too. Guess it's bcoz d core limitation. Ours based on d ori. rel. core aka Samuel which max. out @ ~700MHz. Due 2 their low production output (as compared 2 Intel & AMD) & heavy speed binning, we can't expect anything more >20% o/c.

sniper-on-the-roof managed 2 o/cked fantastically well (a whooping 50% ) owing 2 it's newer Nehemiah core!!! :jealous:

This post has been edited by watcher: Aug 12 2006, 05:49 PM

Why not?
It all depends whether yr mobo support o/cking option(s), if any.
Some boards AUTO detects yr FSB & doesn't allow u 2 budge even a MHz.
2nd_ly, if yr P3 is 800E (100FSB) instead of 800EB (133FSB), then it would be much easier.

DISCLAIMER: I wun be responsible 4 any boom. O/c @ yr own risk. Remember 2 backup all data prior 2 doing so esp. 4 noobs. as o/cking may lead 2 data corruption & h/w damage/failure! Dun say I didnt warning, ya!

What u need 2 do basically is:-
1) Up yr VCORE (CPU voltage) eg. 1.7v -> 1.75v+ (if necessary)
2) Up yr FSB slowly from say 133MHz -> 138MHz (depends what's d nx FSB available)

Advancely:-
3) U may need 2 lower yr RAM speed/timing & up yr VDIMM (RAM / I/O voltage)
4) Change yr HSF / fan extreme o/c. :lol


If u need more specific help, open another thread & PM me as we r cybersquatting on other ppl's thread. Gather info. like yr CPU speed/type, mobo (brand/model), RAM (brand/model/type) etc.

This post has been edited by watcher: Aug 12 2006, 06:06 PM

thx but my mobo dun support...i'll try again after i change to my other mobo