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FSB speed question

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  • CPUs
  • Bus Speed
Last response: in CPUs
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February 22, 2011 9:20:24 PM

can someone explain the difference between my fsb speed and rated fsb please as on cpu-z.



I understand that core speed = bus speed x multiplier, but where does rated fsb come in and how does it relate to the other previously mentioned?

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February 22, 2011 9:28:46 PM

It implies that my quad pumped has been oc'd??
a c 231 à CPUs
February 22, 2011 9:52:47 PM

The bus speed as listed is actually the speed of the reference clock, the clock speed is the multiplier times the reference clock, and the FSB transfer 4 chunks of data per cycle of the reference clock so its like a standard 1 chunk per cycle bus going 4 times the speed of the reference clock. It shoudl really be listed as MT/s(megatransfers per second) rather than MHz.
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a b à CPUs
February 23, 2011 12:20:22 AM

danielsuperchef said:
can someone explain the difference between my fsb speed and rated fsb please as on cpu-z.

http://i287.photobucket.com/albums/ll148/reggie256/untitled.jpg

I understand that core speed = bus speed x multiplier, but where does rated fsb come in and how does it relate to the other previously mentioned?


Bus speed=133MHz
FSB=Bus speed x 4 (because it is quad pumped)=133x4=533MHz
Your CPU=Bus speed x CPU multiplier=133x6=800MHz

Makes sense?
February 23, 2011 7:32:51 AM

Thanks guys that helps!!
I was going round in circles and confusing myself, couldnt work out the X4 and X6 bit and come up with those numbers!
a b à CPUs
February 23, 2011 8:34:02 AM

No problem!
!