Why is the clock speed off

[Yancey]

For some reason the clock speed is 3712mhz on all core and I have it set to 3700mhz in the bios why is it 3712 to 3714 at AMD OverDrive and CPUZ???
It is a crosshair iv..

[Sn0wm@n]

voltage fluctuation ...

[BeepBeep2]

For some reason the clock speed is 3712mhz on all core and I have it set to 3700mhz in the bios why is it 3712 to 3714 at AMD OverDrive and CPUZ???
It is a crosshair iv..

At least it's not as bad as my old 790X-UD4P set 200 HTT and you ended up with 201.4

Gomeler has that board now, I believe he's gonna have fun with some locked chips in it.

voltage fluctuation ...

It's just a limitation within the clock generator.
It's not big deal really.

As far as Sn0wm@n's comment about voltage fluctuation...

If I set 1.50v in TurboV...I get 1.500v idle and 1.512v load with LLC on It stays there as well. Yet to be check by a DMM, as mine is in the mail.

[Sn0wm@n]

so how does the clock generator works ???

is it really just a logic portion of the cpu based out of transistors ... and the bios is programed to talk to it .. so its remotely possible that a very small fluctuation might happen ...


that was my reasoning ..and i might be totally wrong about it

[Yancey]

voltage fluctuation ...

The voltage looks stable but it is like beep said it looks like it is 200.4 FSB in the bios, What is the best way to fix this??

[BeepBeep2]

so how does the clock generator works ???

is it really just a logic portion of the cpu based out of transistors ... and the bios is programed to talk to it .. so its remotely possible that a very small fluctuation might happen ...


that was my reasoning ..and i might be totally wrong about it

It's a chip on the motherboard that sets the base clock (HTT) for CPU, memory, HyperTransport, etc. It's completely unrelated to the CPU or the voltage it gets.

@ Yancey
You can't fix it.

[Yancey]

Quick queston should I run the LLC CPU Enabled and the CPU NB LLC Enabled??

[Sn0wm@n]

http://en.wikipedia.org/wiki/Clock_generator

A clock generator is a circuit that produces a timing signal (known as a clock signal and behaves as such) for use in synchronizing a circuit's operation. The signal can range from a simple symmetrical square wave to more complex arrangements. The basic parts that all clock generators share are a resonant circuit and an amplifier.

it does look like my theorie sounds right

It's a chip on the motherboard that sets the base clock (HTT) for CPU, memory, HyperTransport, etc. It's completely unrelated to the CPU or the voltage it gets.

@ Yancey
You can't fix it.

ok i did get it wrong that it was on the cpu but in reality its off the cpu .. but its still silicon based chip ... and its duty is to send signals ....

[BeepBeep2]

Quick queston should I run the LLC CPU Enabled and the CPU NB LLC Enabled??

Yes, if you want vcore to be lower or equal when idle compared to load. Disabling them seems to give quite a bit of vdroop.

http://en.wikipedia.org/wiki/Clock_generator


it does look like my theorie sounds right


ok i did get it wrong that it was on the cpu but in reality its off the cpu .. but its still silicon based chip ... and its duty is to send signals ....

Yes but the chip used varies from board to board, partially the reason some boards are a little off of actual integers.

[Yancey]

Yes, if you want vcore to be lower or equal when idle compared to load. Disabling them seems to give quite a bit of vdroop.



Yes but the chip used varies from board to board, partially the reason some boards are a little off of actual integers.

Thanks I am running CPU LLC ENABLED AND CPU-NB DISABLED. Should I run both in auto or enabled or disabled??

[BeepBeep2]

Thanks I am running CPU LLC ENABLED AND CPU-NB DISABLED. Should I run both in auto or enabled or disabled??

I run both on enabled...

[Yancey]

Does it run more stable like that??

[BeepBeep2]

Does it run more stable like that??

Basically, without LLC on for both, you are going to get vdroop for both.

Setting 1.55v with LLC off and getting 1.51v load isn't really usefull to me. Setting 1.55v with LLC on and getting 1.56v load is.

I can't exactly monitor CPU-NB volts (nor do I know where the monitoring points are) without a DMM which I don't have atm.