[ntp:questions] Sudden drop in frequency after software update

Rob van der Putten rob at sput.nl
Mon Jan 19 13:24:14 UTC 2009


Hi there


Brian Inglis wrote:

> Is spread specturm clock signal generation (EMI reduction) disabled for
> the CPU and buses in the firmware? 

These are the BIOS options;

CPU Spread Spectrum [Auto]
Allows you to enable or disable the CPU spread spectrum.
Configuration options: [Auto] [Disabled]

PCIE Spread Spectrum [Auto]
Allows you to enable or disable the PCIE spread spectrum.
Configuration options: [Auto] [Disabled]

They are both set to 'Auto' (default).

Checking these involved a reboot. And now 'frequency' seems to be 
returning to it's original value.

> That can cause these variations. 
> ISTR it being mentioned in the FAQ.

URL?


Regards,
Rob




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