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 Clockgen, How to find the PLL

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watcher
post Oct 25 2006, 10:57 PM

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>The problem is i can't find out the model number coz i don't know exactly where this chip is located on my motherboard cry.gif
D PLL chip is a chip 'bout 1" x 0.5cm while many small legs along d body length-wise. Sometimes, on a motherboard, they maybe more >1 PLL & some other ICs while resemble it too!. Usually there's a crystal (a oblong, pill shape liked metal like component 'bout 1cm by 0.2mm) accompanying it. icon_idea.gif Refer d attached diagram.

This post has been edited by watcher: Oct 25 2006, 10:59 PM


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watcher
post Oct 26 2006, 12:25 AM

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QUOTE
I have another question...how do i lock the agp/pci clock speeds so when i increase the fsb, they won't increase as well?


Diz depends mostly on d chipset & d PLL chip as how it's implemented by its manufacturer. Some chipset doesn't like/support asynchronous speed btw. it's buses while some have a non-functional lock notably d VIA PT800 series for P4 & VIA K8T800 series for Athlon64.

In such case d AGP/PCI bus/clock speed increase proportionately wif d FSB eg. if u o/c yr FSB from 200->220 then yr AGP/PCI would be then 66/33 -> ~72/36 respectively. doh.gif

However, if yr motherboard has d AGP/PCI frequency setting, u may peg it @ 66/33. Some boards, even they dun shows may auto lock d AGP/PCI freq. quietly as long as d chipset & d PLL supports it! tongue.gif


 

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