P3 overclock

[dbnoll03]

I have got a Pentium 3 500MHz on a Matsonic MS7112C motherboard. I have been told that I cannot change the multiplier, that I can only change the FSB. How? I tried SoftFSB, no luck, my motherboard was not listed. Can I change it through BIOS, or physically on the motherbaord?

[JCB]

I give you a big one on guts.

If you can find your motherboard manual, it may show the jumper settings for the RAM front side bus (fsb). This is the only way you can oc an intel.

Sometimes the jumper settings are printed right on the mobo itself.

If ... now if your Memory (RAM) will overclock... you can set the fsb above 100mhz to increase the overall speed of the cpu. the equation is multiplier value times the fsb value. Your's is presently 100x5=500.
That's how it got to 500. Be happy.

You have a bunch of great ideas about cooling etc. You need to apply yourself to study in the art of overclocking itself. Quit the BS. You're wasting everyone's time including your own.

[dbnoll03]

Well that is what I was trying to do, learn, and I am NOT wasting my time. I think I would know. Moving on...do I need to change the voltage setting as I move up with the bus speed? How hot is too hot for my Pentium III 500MHz. Right now, not overclocked, its at about 35 degrees celsius. How much further should I let it rise?

[dbnoll03]

I attempted overclock the FSB in the BIOS. These are the options, what they are set at, and what the options that I could select:

CPU Host Bus Frequency: 100 (100/103/112/133)
CPU Core Frequency Multiplier: 5.0 (2.5/3.0/3.5 etc. to 8.0)
CPU Voltage: Default (2.0/2.1/2.2 etc. to 3.0/Default)

These are the readings in the BIOS:

CPU Temp.: 35C/98F
System Temp.: 32C/89F
CPU Fan Speed: 4258 RPM
Analog (V): 5.06V
I/O (V): 3.32V
+12 (V): 11.78V
CPU (V): 2.0V

From my understanding the CPU Core Frequency Multiplier is locked so I increased the CPU Host Bus Frequency. I was able to raise it up to 112. But when I raised it up to 133 the computer would not start. I reset the CMOS manually and set it back up to 112. How do I get it to goto 133? Do I need to increase voltage?

[This message has been edited by dbnoll03 (edited 03-27-2001).]

[Roy]

Find out what Clock Generator IC you have. It's located next to a little shiny metal can on the mobo. If you're lucky, it will be supported by SoftFSB or CPUFSB.

Then you might be able to kick the FSB after the OS loads and get some extra juice out of your setup. There might be some selections between 112 and 133. Your RAM will have to handle the extra speed too. BTW ~ forget doing anything with the multiplier, it won't change.

Raising the voltage 10 - 15% also can help with stability at higher speeds, but keep an eye on the temperature. 50C is not unusual.

JCB ~ What's your problem?

[dbnoll03]

I am not sure where that "little shiny metal can" you spoke of is located. But I did try every setting in SoftFSB and none worked. So I will scratch that option. I guess I will try pumping the voltage up to 2.3 and running the FSB at 133.

[Bsdboy]

Getting a P3 500 to run with a 133 fsb is
VERY difficult.Mine runs 585 default voltage
the temp is 28c,it runs 595 at +7.5% voltage
at 30c but it just wont go further.

Bsdboy

[dbnoll03]

You say it is DIFFICULT, but is it IMPOSSIBLE? What can I do?

[Bsdboy]

Yes it can be done but look at my experience
above I'm running cool all my other components should be up to the task but I
still can't get higher than 119fsb/595mhz.
Try Roy's suggestion but Softfsb won't work
on your board but maybe Cpufsb might (I don't
know if it works with Via chipsets)you can
find it here: http://members.nbci.com/podien/CPUFSB.HTM

Good luck
Bsdboy