need info on multiplier (what is it?)

[dud2k]

hey,
people are always talking about multipliers and clock speeds, can anyone explain this? is this for overclocking?
thanks

 

[SuperFreaky]

a clock speed is derived from the front side bus of the system MULTIPLIED by an arbitrary number called..... the multiplier

A PIII 700 is a (100Mhz FSB * a 7 Multiplier)
upping the FSB to 133Mhz would yield a 933Mhz

you can't change the multipliers on intel CPUs these days... but AMD left a little workaround in.

 

[dud2k]

oh, is the multiplier a 7 because its 700 mhz? IE my 400mhz celeron would have a 4 multiplier?
also whats the FSB on a 400 mhz celeron.

 

[mikable]

Your Celeron has a 66 MHz FSB speed multiplied by 6 for 396mhz


Edit: got to get the math right! 😱

 

[dud2k]

so... 400+396 mhz is the highest i can get?

 

[dud2k]

bump

 

[mikable]

no your "400" MHz celeron only does 396 HMz. not 400+396 Intel takes the FSB (Front Side Bus) speed and locks the CPU at a multiple of it.

Celeron's 66 MHz

PentiumIII E's 100 MHz

PentiumIII EB's 133 Mhz

Intels Newest Celeron 800 (or is it 850?) 100MHz

If your motherboard suports diferent FSB settings, you can tweak them to "overclock" your CPU. Some boards do some don't. If you got it from the likes of Dell, Gateway, Compaq, etc... chances are you can't adjust the FSB. If you built it, or got it from a local build it themselves shop, chances are you can.

 

[SuperFreaky]

He was just saying that your processor is really running at 396Mhz (66Mhz FSB * 6 Multiplier) exactly, not 400Mhz.

Your Celeron 400 could be put on a 100MHz FSB and you would have the *slim* chance at running at 600Mhz (100Mhz FSB * 6 Multiplier)... you'd probably need some serious cool to pull it off however because, if I'm not mistaken the original celeron topped at about that speed.