CPUZ help?

[XiiXii808]

Ok so i'm studying computer science and my lecture has really bad handwritting when it comes to taking notes down and i have a test next week in class on finding the multiplier and core speed of a cpu using a cpuz screenshot like this for example. I was wondering if anyone out there can explain how the   multiplier is found and core speed using the information given in this cpuz screencap? Thanks

[mariushm]

2500 Mhz / 333 (bus speed) = 7.5x - i guess this is what you would call multiplier.

 

[APasz]

Core speed (2.5ghz) divided by bus speed (333.51) = 7.496027105634014 a.k.a 7.5.

[boey]

Multiplier x Bus Speed = Core Speed

ie. a 36x Multiplier on a Bus speed of 100MHz results in 3.6GHz

[Tan3l6]

1 hour ago, mariushm said:

2500 Mhz / 333 (bus speed) = 7.5x - i guess this is what you would call multiplier.

 

Agreed

[XiiXii808]

Hi guys i was curious to know lets say you were doing a college test based on screenshots on cpuz and you had no information such as no core speed, no multiplier speed and no bus speed besides the specification speed 2.90ghz on this core i5 screencap and you had to find the numbers as shown in this screencap can someone explain to me how do i find the core speed, multiplier speed and bus speeds? I have a test coming up and my lecture notes are super messy and not understandable to be able to find these numbers that are in this screen cap? I'm also very unsure on how the 8 and 41 are calculated for the multiplyer. Thanks

[WkdPaul]

Last decade or so, the bus speed will always be 100Mhz, then the multiplier decides the speed of the CPU in Ghz.

 

2.9Ghz CPU = 29 multiplier with 100Mhz bus speed (29 x 100Mhz = 2900Mhz, or 2.9Ghz).

Edited November 3, 2019 by wkdpaul

[WereCatf]

7 minutes ago, XiiXii808 said:

I'm also very unsure on how the 8 and 41 are calculated for the multiplyer.

They are not calculated. It just simply states that, as configured, 8 is the minimum multiplier and 41 is the maximum one.

[FloRolf]

You know, instead of making multiple threads you could just respond to your old ones.

 

 

[akio123008]

If you just know the stock speed and nothing else, you have no chance of knowing bus speed, multiplier and actual core speed. You could guess the bus speed to be 100 MHz as it's a typical number, as @wkdpaul pointed out, but you can't be sure that's the case on whatever CPU you'll be asked.

 

The only thing you can be sure about is: clock speed = multiplier x bus speed

and derived forms of that, such as: bus speed = clock speed / multiplier

 

Like with any other formula, you can only compute an outcome if there's one unknown. If there are 2 unknowns, you have had it.

 

26 minutes ago, XiiXii808 said:

Hi guys i was curious to know lets say you were doing a college test based on screenshots on cpuz

Also, just curious, what kind of test is this? What are you studying?

[WkdPaul]

57 minutes ago, FloRolf said:

*snip*

Please use the report button next time, there isn't always a mod present in the thread

 

* Threads merged *

[FloRolf]

3 minutes ago, wkdpaul said:

Please use the report button next time, there isn't always a mod present in the thread

 

* Threads merged *

 

[Tristerin]

Why do I get the feeling we are doing someones homework for them?  Not the legwork, we use our google-fu all the time for people, but literally his homework.