multiplier?

[phantom93]

what is a CPU multiplier? I have my P4 and it says Multiplier of 23 in CPU-Z.

 

[dasickninja]

I know its wiki, but this time they're right:
http://en.wikipedia.org/wiki/Clock_multiplier

 

[ajfink]

Northwood 3.06?

 

[ajfink]

Northwood 3.06?

133 system clock, 533 MHz FSB, and multiplier of 23.

Jack

Oh, we're good.

Doesn't hurt I have a Remote Desktop open to my OCed 3.06 folding machine...

 

[1Tanker]

I know its wiki, but this time they're right:
http://en.wikipedia.org/wiki/Clock_multiplier

Somebody doesn't like you.... Their loss.

 

[1Tanker]

Jack...sorry for going slightly OT, but what is the highest multi you've tried on your X6800? I just wonder how high you could go(although you'd have to drop the FSB to keep a steady speed). ie. If i had your CPU, i would try 15x195-200, and maybe 133x22...just for sh**s and giggles. I love playing around with the FSB... I dropped my D915 down to 100x14, and benched it...just to see how it compared against my older processors. It killed my PIII 1.2@1401(155.68x9) in Super Pi 1M. Call me strange.

 

[phantom93]

ok, so my P4 is 3.06GHZ so i divide that by 23 to find my actualy clock speed?

 

[YO_KID37]

3060/23 = 133Mhz FSB(Absolutely what you do to find your FSB Speed)

 

[phantom93]

oh ok. thanx for the info XD

 

[ajfink]

ok, so my P4 is 3.06GHZ so i divide that by 23 to find my actualy clock speed?

Actual clock speed is 3.06 Ghz, I assume? You simply have to check system properties for that. CPU-Z will also tell you,

 

[dasickninja]

I know its wiki, but this time they're right:
http://en.wikipedia.org/wiki/Clock_multiplier

Somebody doesn't like you....
I figure the person will tire of this soon. Vendettas only tire out the one who attacks.

 

[shinigamiX]

Northwood 3.06?

133 system clock, 533 MHz FSB, and multiplier of 23. I believe that was the highest achieved multiplier yet...

Jack
I seem to remember a 2.8GHz Northwood that ran at 400MHz FSB - 100x28 for 2.8GHz.

 

[ajfink]

Northwood 3.06?

133 system clock, 533 MHz FSB, and multiplier of 23. I believe that was the highest achieved multiplier yet...

Jack
I seem to remember a 2.8GHz Northwood that ran at 400MHz FSB - 100x28 for 2.8GHz.

The top speed for Northwood was 3.06 GHz, and they made a 533 MHz FSB variant.... I owned one.

Northwood was never on the 400Mhz FSB, did it? And I thought they made up to 3.2Ghz 800Mhz FSB Northwood variants, or is my memory serving me poorly?

The multi for my 2.6C is only 13. Lame compared to my 3.06,

 

[phantom93]

but on soem CPUs the multiplyer chaznges. why?

 

[ajfink]

but on soem CPUs the multiplyer chaznges. why?

Some CPUs have unlocked multipliers for enthusiasts to play with. These would include Intel's Extreme Edition processors (including the current X6800 and QX6700) and AMD's FX series of processors. Upping the multiplier allows the user to increase clockspeed without putting any more strain on the memory and chipset.

Nearly all modern PCs also include some form of energy saving features. One of these is to clock down the CPU when its full power isn't required. So the multiplier is automatically dropped, the voltage reduced, and the clockspeed falls, thus resulting in less power usage. This is outside of the control of the user and is automatic. These features can be enabled or disabled, though.

 

[phantom93]

oh ok.

 

[nightscope]

but on soem CPUs the multiplyer chaznges. why?

And, if I remember correctly, I read something about some advantages that are due to lower multipliers. The thing is, Intel learned that the higher multiplier on a processor, the slower it is due to the fact that it has to go through that many steps to execute a process. Since the AMD processors had a less multiplier, a lower speed one can compete head to head with a higher speed Pentium 4 (Athlon 64 vs Pentium 4). I'm not exactly sure if that's the multiplier or the pipelines in the processor, but that's what I remember. Correct me if I'm wrong please.

 

[shinigamiX]

Northwood was never on the 400Mhz FSB, did it? And I thought they made up to 3.2Ghz 800Mhz FSB Northwood variants, or is my memory serving me poorly?

The multi for my 2.6C is only 13. Lame compared to my 3.06,

I looked around and found this. Apparently there was one, but it was very rare and probably available only to vendors.

 

[qcmadness]

Northwood was never on the 400Mhz FSB, did it? And I thought they made up to 3.2Ghz 800Mhz FSB Northwood variants, or is my memory serving me poorly?

The multi for my 2.6C is only 13. Lame compared to my 3.06,

The first releases of Northwood CPUs are of 400MHz.
P4 1.6A, 1.8A and up to 2.8GHz.

shinigamiX is right about that.
There are 400MHz, 533MHz and 800MHz versions for 2.8GHz Northwood CPUs.