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(GUIDE) Getting your Busratio


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Poll: Does Busratio=XX Help? (26 member(s) have cast votes)

Has adding a Busratio to the Boot Plist Helped you?

  1. YES! (15 votes [57.69%])

    Percentage of vote: 57.69%

  2. No. (3 votes [11.54%])

    Percentage of vote: 11.54%

  3. I am not sure. (8 votes [30.77%])

    Percentage of vote: 30.77%

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#21
Zman21295

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I have an AMD Phenom II x4 635 at 2.9 Ghz. Where exactly can i find the external clock speed?


Hello and Welcome! Your External Clock Speed is 200 MHz so your Bus Ratio is 14.5 and rounding gets you 15.

2900 / 200 = 15

So your com.apple.boot.plist should have

<key>Kernel Flags</key>
<string>busratio=15</string>

Hope that Helps!

#22
Fairlyodd

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Thanks for the tutorial...I was having major issues with sound distortion and lagging in iTunes ect...after several attempts with several solutions this is the one that fixed the issue.

AMD Athlon II x4 645 3.1 Ghz - Bus ratio = 16

Just as simple as that, why oh why didn't I see this earlier????? :wallbash:

#23
Zman21295

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Thanks for the tutorial...I was having major issues with sound distortion and lagging in iTunes ect...after several attempts with several solutions this is the one that fixed the issue.

AMD Athlon II x4 645 3.1 Ghz - Bus ratio = 16

Just as simple as that, why oh why didn't I see this earlier????? :wallbash:


Glad to hear that!

#24
richdooz

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First to say THANK YOU.  After upgrading my bootloader I couldn't boot anymore except sometimes in safe mode on my custom recovery partition. Very frustrating!

 

This thread helped quite a bit... I finally narrowed the problem down to the bus ratio.  It seems with the upgrade (Chameleon 4.3.2) the busratio wasn't calculated correctly anymore.  Trying cpus=1 busratio=21 PCIRootUID=1 worked, but narrowing that down to busratio=21 did not.  I finally figured out since I am running a Core 2 Quad Q6600, the base bus speed is 266, not 133 like on the newer Core i CPUs.  So to get the busratio for mine I had to divide the processor speed (2.4GHz) by 266.  2400/266 ~= 9.  Using Chameleon to set busratio=9 and uncheck both cpus=1 and PCIRootUID=1 worked!

 

Thanks to all contributors!



#25
PimentelX86

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Hello

 

Currently Chameleon version recognize many busratio of many CPUs... Your CPU is include.

 

Only in the past with the launch of Haswell CPUs we had problems, the Chameleon didn't recognize the busratio Haswell CPUs, but thanks to the developers it has been adjusted and is recognized now.



#26
kr0n0s

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Hello,

 

I have a core i5-2500k with a frecuenzy 3300Mhz and fsb 100, so bus ratio is 33. Acording to that, how i add it to clover?

 

Thx in advance.



#27
Gringo Vermelho

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You should be asking this question in a topic about Clover.

 

http://clover-wiki.z...g/Configuration < config.plist - looks like you need to use the BusSpeedKHZ flag.

 

Please refer to this topic for instructions on how to use Clover.



#28
ericsia-ES

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hey man, thank you very much.. Very helpful and nice tut (how i wish this is my tut lol )



#29
C.Frio

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hi..

 

http://www.cpu-world...re i5-4430.html

 

at this site do a search of your processor  and you can see the "clock multiplier "..and if as @gringo vermelho said above..  "Sorry, I'm being retarded, YES, your bus ratio is the same as your clock multiplier."   so, the idea is to point an ease place to find "clock multiplier"....

 

c.frio



#30
Gringo Vermelho

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Hey! No need to repeat the part about me being retarded lol



#31
C.Frio

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Hi

Gringo..sorry.spam..

c.frio



#32
leatherman

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Great post, many people seem to throw around completely random busratio= with no base in reality, hopefully this will help.







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