View Full Version : Pentium 120 @ 133 mhz
I had this old comp hanging around, t'was a Pentium 120. By changing the jumper settings, I got it up to 133. It's very stable. I can't make it go any higher using the jumper settings. Is there anything else I can try?
Welcome aboard! What motherboard do you have and is your system a shoe box or one of the big brand names?
Big name.
NEC Ready 7620fs.
Mobo - BMC FM 567
flounder43
10-28-01, 12:32 PM
Look either on the mobo or on the case cover for jumper settings.
Here is an example of a similar situation. I have a P. Pro 200 running at 233. This is done by changing the multiplier jumper from the 3 to 3.5. The multiplier multiplies the bus speed, which on my computer is 66. (3.5 X 66 = 233). I also have a jumper to set the bus speed to 60.
Anyway, looking at your results, i would say that you changed your bus speed jumper from 60 to 66. Using the same multiplier, that would explain going from 120=(60 X 2) to 133=(66 X 2). Look for a multiplier jumper. Your next step would be the 2.5 multiplier.
Hope this helps.
I am happy to answer more questions as well.
Welcome to the forum.
Here is a list of my "Processor Speed" jumpers:
JP11 JP10 BF1 BF0
Are these FSB jumpers?
Additionally there are voltage jumpers.
What are the codes of multiplier jumpers?
Originally posted by anile8
Here is a list of my "Processor Speed" jumpers:
JP11 JP10 BF1 BF0
Are these FSB jumpers?
Additionally there are voltage jumpers.
What are the codes of multiplier jumpers?
It all depends on the board, every one is different. Not to rain on your parade but given you have a big brand name your options for overclocking will be more limited than if you had a shoe box system. You may actually be at your motherboard's limit. I'd check the web site for the system manufacturer, maybe they'll still have old P1 stuff listed and you might be able to find out what different models used that motherboard and what speeds those models ran at, this might help you figure your boards limit out.
flounder43
10-28-01, 12:50 PM
Well lets start with this: Which jumpers did you change to get to 133? Chances are the only choices are 60 or 66. Jumpers that change the processor speed other than these will be your multiplier.
Do you have a motherboard manual at all? Otherwise, I would do a google search for it using the model/mobo # if possible. The more info, the better. Someone knows this model, and if you are lucky, the manual is out there.
I was given my mobo, and it took me about 2 days to figure out what it was and get a copy of the manual. But it really helped.
Don't touch the voltage until you need to...
I've overclocked a Pentium 120 before and the most I could get was 133 like you. But I never did any cooling mods. Maybe if you remove the heatsink and applied a good thermal paste it would help. Some of those old CPUs never even had a fan. If so, add a fan or maybe upgrade to a high speed fan that flows more air. Unless you have a motherboard with 75 FSB (some Cyrix CPUs ran at that speed), your only viable choices are 2X60=120 (default), 2X66=133 (where you're at now), 2.5X60=150 (possibly), or 2.5X66=166 (maybe, but don't hold your breath). Like was said, you'll have to research your board and find the multiplier jumpers. Sometimes there is a little chart silkscreened onto the motherboard somewhere (not always next to the jumpers). Sometimes it just says for a 166 CPU use such and such jumper settings. Each brand of board is different. You probably will have to do some cooling mods to go much higher though.
jazztrumpet216
10-28-01, 02:16 PM
Originally posted by anile8
Here is a list of my "Processor Speed" jumpers:
JP11 JP10 BF1 BF0
Are these FSB jumpers?
Additionally there are voltage jumpers.
What are the codes of multiplier jumpers?
On my Asus P2B-B, the BF jumpers are the multiplier. I'd guess the JP's are the FSB, though on mine they are "FS" jumpers, for obvious reasons. Hope this helps.
funnyperson1
10-28-01, 07:52 PM
just play with em and see if you break the cpu youre looking at a stiff 10 dollar replacement fee lol....
Originally posted by funnyperson1
just play with em and see if you break the cpu youre looking at a stiff 10 dollar replacement fee lol....
IF you can find a replacement. If not then your SOL. :(
jazztrumpet216
10-28-01, 10:38 PM
Originally posted by eobard
IF you can find a replacement. If not then your SOL. :(
eBay. You'd probably be able to find a 233 for about 10 bucks there. I just got a Celery 600 for $23.
Originally posted by jazztrumpet216
eBay. You'd probably be able to find a 233 for about 10 bucks there. I just got a Celery 600 for $23.
My point exactly. You'd probably find a 233 for 10 bucks. A 133 is a very different beast, its a socket 5 chip for a socket 5 board. If the board in question is socket 5 then putting a 233 cpu in it will only result in a blown 233 cpu. The lowest I can get from local stores is a 233 p1. I don't think a 133 p1 is worth the effort to track down and then pay shipping on and jump through all the other potential flaming hoops to get. The chip may cost $10, its worth $10, but the expense of time and effort is not cost effective.
funnyperson1
10-28-01, 11:07 PM
if you did break it i could probly send you a 90 for free....but dont try to break it.....
Sir-Epix
10-29-01, 10:15 PM
You are lucky, as I can't even get my 120 up to 133. I am going to try again, for it is getting really cold now. Hopefully I can get it up there. But then again that is a big hassle as it has no monitor :(
vBulletin® v3.8.7, Copyright ©2000-2012, vBulletin Solutions, Inc.