Archived from groups: comp.sys.hp.hardware,comp.sys.laptops (
More info?)
Quaoar wrote:
> Phil Schuman wrote:
>> "Andrew" <usenetMYSHOES@bizaveMYSHOES.com> wrote in message
>> news:cfyzcasdaxcdd82623029811@bizaveMYSHOES.com...
>>> In comp.sys.laptops Phil Schuman <pschuman_nospam_me@interserv.com>
>>> wrote:
>>>> A friend has a HP laptop - ZE5385 -
>>>> and the fan is running all the time .... it never shuts off -
>>>> It is always running at 2.6Ghz - even with the Laptop power setting
>>>> which I thought was supposed to have graduated speed settings...
>>>
>>>> Any thoughts on why the Power setting of "Laptop" is not lowering
>>>> the CPU speed,
>>>> and also why the fan is running all the time -
>>>
>>> This is getting to be an FAQ on comp.sys.laptops.
>>>
>>> Two common answers:
>>>
>>> 1. The heat sink/fan area around the CPU has gotten dirty and needs
>>> to
>>> be cleaned out, so it can cool properly.
>>>
>>> 2. The laptop CPU is running near/at 100% load therefore causing the
>>> CPU to get hot and thus the fan comes on automatically to cool it.
>>> Could be spybot software or something like that or perhaps even
>>> anti-virus software that is always scanning files. The laptop would
>>> probably seem slow in this case, but you can verify by doing
>>> CTRL-ALT-DEL to bring up task manager to look at CPU utilization.
>>>
>>> Andrew
>>> --
>> well - neither one really applies in this case
>> #1 - task manager shows about 95% idle time
>> #2 - the CPU is running at 2.6Ghz all the time when checked via My
>> Computer (right click)
>> So - the real problem, is why the CPU is running flat out
>> even when the power scheme settings is Laptop -
>>
http://www.pcpitstop.com/faq/cpu.asp#cpupmgt
>
> The 2.6Ghz P4 845MP/MZ does not throttle CPU frequency for thermal
> control - the CPU runs at 2.6Ghz always, but the clock steps in
> increments to reduce effective throughput as dictated by the internal
> thermal control circuitry. In addition, I have never seen a mobile P4
> that runs cool enough that the fan is or can be stopped, but then I've
> not seen all of them. The P4 CPU is simply terribly ineffiecient as
> anyone with a P4/P4M furnace laptop can attest. FWIW, all P4s run with
> clock stepping instead of CPU frequency (voltage) modulation for thermal
> control.
>
> Q
you need an AMD processor if you want throttling ,baby!!
--redpill