CPU throttling

[David O'Brien]

On Sun, Jan 18, 2004 at 11:55:06PM +0100, Adriaan de Groot wrote:
> On Sun, 18 Jan 2004, David O'Brien wrote:
> > On Wed, Jan 14, 2004 at 03:41:16PM -0600, James Van Artsdalen wrote:
> > > Is CPU throttling possible with AMD64?
> >
> > Nope.  We don't have a Cool&Quiet PowerNOW driver.
> 
> I had C&Q turned on in the BIOS of my Asus k8v,

AMD Q&Q(tm) is something different than what your mobo is doing.  C&Q
controlls VID/FID (p-state) changing.  One needs a driver for it.

> and coupled with the
> zalman 7000cu cooler, the behavior was as follows:
> 
> 0) at boot, spin fan at 2500rpm for 5min
> 1) shut off fan entirely (damn frightening!)
> 2) wait for CPU temp. to reach 50 degrees
> 3) switch on fan at 2500rpm
> 4) wait for CPU temp. to reach 30 degrees
> 5) goto 1

Yes, this is simply the mobo running the fan at the slowest speed that
will keep the CPU w/in vendor specified operating temps.