Overclocking PIII- 450 Retail

[The Dancing Peacock]

I'm a newbie to overclocking, don't really know the first thing about it. I have a retail p3-450, with no extra fans or heatsinks, beyond the fan and sink on there. My bios on my BE-6 (first not the second) has a CPU soft menu and I am able to change the clock speed all the way up to 550 (100).
The default voltage is 2.0, I don't know if I should change this. Other options are 500(66) and 500(100).

How safe is it for me to change up to these values without adding any additional cooling devices. And if I do change it, what type of cooling devices should I put on? Should I change the voltage at all?



Thanks.

TDP

 

[Vegito]

I gotten an old one to overclock to 133x4.5 = 600. You should change FSB first... try manually, I think you're chaning it automatically which doesn't work since multiplier is locked.. it probably defaults back to 4.5x100 instead of 5.5x100

Should get better cooling, but try 4.5 x 112 = 504 Mhz, not much but better..

 

[The Dancing Peacock]

If i do change the multiplier to 112, can i get away without adding any fans or heatsinks? Also, what about the voltage, do I have to change that at all, or just change the FSB (Not sure what it is, but I know what you want me to change) ?




Thanks,

TDP

 

[The Dancing Peacock]

not quite sure how I did that...grr

 

[tonyou]

Well, if your computer crashes while you overclock then you'll know! But seriously, with the retail heatsink, you should try not to go over 2.10V

Tony

 

[The Dancing Peacock]

forcesho and tony, thanks for you help.

Will it be okay if I change the FSB to 112 and the voltage to 2.10v? Will it be safe to run with the retail heatsink and fan?

What does changing the voltage do? Sorry, but I don't really know anything about overclocking. I know the multiplier is locked, and then multiply that by the FSB to get the megahertz, but I'm unclear what the voltage does, and why you have to change it when overclocking.

Thanks.

TDP

 

[compuwiz1]

Ive got one of those that will do 675 at 2.2v with Alpha.

 

[Supradude]

when you change your fsb to get a higher clock setting, your making the cpu work harder, more work needs more voltage to keep working t an accelerated rate... too much however can damage your chip... proceed carefully, up the fsb in small increments and start your cpu up all the way to your OS, then check your temps with HWdoctor and see what your getting, for katmai 450 you shouldn't run over 40-45 degrees, this should be MAXIMUM,... then restart and up the fsb again, ...repeat, when you don't post anymore or can't start up, then begin upping the voltages... to do this though i highly suggest you pick up a better heatsink as clocking anywhere past 500ish will probably generate too much heat...

 

[micron]

If 40-45C is max temp than do I have a problem? My retail PIII 450 runs between 55-60C at ful load (RC5). Do I need better cooling? Also when I set the bus to 133Mhz I get a windows protection error. Is that because of my RAM?

TIA, Micron