Could someone please give a parameter to OC PII/350 (Intel CPU).

[Chucky]

Thanks bunches.

 

[pyr]

bad luck. they were one of the first intel chips to be clock locked. Only way to run them higher than 350 is to get a board that supports setting the multiplier to 'low' since that will make the chip think it is running at 66mhz and will open up the higher frequencies. if your board doesnt support this there really isnt much youll be able to do. I remember having one of these on an abit BX6. I eventually built a computer for a guy and traded that board and my AWE64 for a BH6 board and the full SBlive card. not a bad deal for a few hours work and I was able to run that cpu at 450 for a while until I got a c300a@512

 

[BiggieN]

so my PII 333 would most likely be not clock locked? how would i check?

 

[pyr]

BiggieN: I believe that the 333 would not be clock locked but of course I cant say for sure. best way to find out? if your board supports CPUs faaster than 333 (a lot of old boards max out at 333) if it supports multipliers over 5 then set it for 5.5 and see if your cpu runs at 366. if it does there you go. you might want to try pushing it to use a 6x multiplier too and see if that works even better.

 

[alchemist]

pyr- your a bit wrong with that one. The p2-350 and 400 were originally not clock locked it didnt happen untill the august after they were released (that was when intel locked all their chips). I have a p2-400 that's unlocked, i bought it when it first came out years ago. go to the cpu database at http://www.overclockers.com that will show what its history of overclocking is

 

[pyr]

alchemist: You got lucky or I was unlucky cause I bought a 350 the week they came out, and it was clock locked when I tried to OC it when the later BX boards came out. only way to unclock lock it was to use the set pin to pull low trick so it expected it was on a 66mhz bus. only clock open at 100 was 3.5 and that was it.

 

[Ben_Tech]

The PII 333 can use any multiplier BELOW 5.0. I had mine running for a long time at 100x4.

 

[puppet]

Try to OC it. I had one that could handle 144 FSB. Sold it to Busta.
Retail HSF default voltage. While I was slowly increasing the FSB I fed it 10% more voltage and let it run Prime95 for hours. Little by little it tolerated higher speeds. "SL2U3" 09080403-0229.
I stripped the case off,lapped the heat plate and heatsink. Made copper shims for the L2 cache chips,used thermo grease between all points. It will either go or not.
Never know till you try.

 

[bigd480]

This isn't much of an overclock but if you want a slight boost, I've been running a locked 350 at 3.5x112mhz for over a year...

Generic CPU fan, one case fan, stock voltages, PC100 RAM...

Performs well, I get FPS in the 30s-40s in Unreal Tournament at 1024x32 bit @ 85hz

 

[Wik]

I am a bit confused as to why you guys had problems overclocking this chip, but I had a PII 350 late model and I was running it on my Asus P2B at 140mhz FSB to get 490mhz out of the chip. Aug'98 is when Intel locked the multipliers. Also you do understand the PII 350 is a 100mhz chip the 333 was a 66mhz chip. I now have a PIII550e in the same motherboard running at 770mhz. The PII350 is now in my dad's computer running back at 350. I will overclock it again when he cries for a faster computer. That way I won't have to buy him another CPU for a while.

 

[Chucky]

Wik,

I tried to OC this damn PII/350 from Abit BX6 Mother Board and seemed to me that it didn't work for some reason. It didn't matter how I set it and the result always: CPU is Unworkable or has been changed something like that.
So, do you or anybody here have any other ideas regarding this OC thingy?

 

[alchemist]

in the bios, did you disable speed error hold...it goes something like that. It is possible that your chip is locked, try lowering the multiplier and see what happens, and try raising it. If it is you can always increase the fsb on it. But if it is only locked in the sense that you cant increase the multiplier, you could always decrease the multiplier and increase fsb till you max out the stability of your board pci and agp divider.
good luck.
btw what is the number of your cpu and or date?

 

[pyr]

Wik: the PII350 came out on April15th1998 (at the same time as the new BS chipset). I had one in my hands within a week of its release, and ran it for about 5-6 months or so at its rated speed of 350 because it would not OC on my BX6 board. it would not run with at 4x100. why? because it was clocklocked. after getting the BH6 board which had a feature which would allow you to set a certian pin to pull low (thereby making the chipset believe the FSB was set to 66) which would open up the multipliers above 3.5. this let me run it at 400 and 450 on a 100mhz bus. things were just the same when I got a PII400 later that year, but by setting the pin to pull low I could run it as a 450.

Chucky: you will not be able to OC this chip (without modifications) in a the abit BX6 board. it does not allow it to be set low. there is a way around that which involves taping a pin on the cpu or applying a small amount of fingernail paint to cover it. there was a writeup about in on tomshardware a long time ago (before I boycotted the site). if you want to do that you should be able to run it a bit higher, otherwise try running your system at 112 or so for a small boost in speed.

 

[Wik]

Oh I see you are talking about the multiplier overclocking. You can still bring your front side bus up and overclock it. You just have to have a board that goes above 100 and good ram, I ran my PII350 and my ASUS P2B at the setting of 3.5 x 140 to get 490Mhz out of it. Ran great. I was running that set up untll April of this year before I got a PIII550e at 770mhz, now I just ordered a 700e cBO and hope to get 980 out of it on my old P2B.