Is it possible to switch the 2nd CPU off?
JF
I read, that with the program "pcsleep" the 2nd CPU could be
send to a state, where it uses less power. Is it possible to
switch the CPU-fan off during this low-power-state?
Another question is, if it is possible to switch the whole
CPU-Card off/on e.g. by a extern switch or by software?
Thanks in advance,
Ciao Jürgen Fortkamp
druck
> I read, that with the program "pcsleep" the 2nd CPU could be
> send to a state, where it uses less power. Is it possible to
> switch the CPU-fan off during this low-power-state?
I don't recall this being supported in hardware for any x86 card.
> Another question is, if it is possible to switch the whole
> CPU-Card off/on e.g. by a extern switch or by software?
Anything is possible if you are willing to make alterations to the
circuit board. The easiest way is to remove the card from the machine if
you are not using it. It's not much use these days in any case.
---druck
JF
Hallo Druck,
thanks for your answer, though it doesn't take me further.
I don't have the knowledge (but the manual abilities ;-) )
to alter/modify the circuit board; perhaps anyone here
has a suggestion for that.
The question about the switch-off of the CPU-fan refered to the
question, if the CPU(-Card) takes a damage, if e.g. the fan would
be interrupted by a manual switch. Perhaps (I hoped so) the CPU
needs no cooling during the pcsleep-mode, or if it's just totaly
switched off.
The question came on, because I frequently, and now more often,
use an old Win95-App, and mounted the 2nd CPU only for this. The data
produced by this app is useful for one of my own RISC OS-Apps. Formerly I
used a PC to drive this app and transfered the data via network to the RPC.
But now I reanimated the 2nd CPU-Card, and only one machine is necessery
for the same job :-) . And the dustcovered CPU-card is brought to new
life...
My Risc PC has no fan, and I've mounted CF-Cards instead of noisy
harddiscs. So the fan of the CPU-Card is a little bit bothering me, and
I'm searching for a way to stop it, without removing it every time I
use it.
Greets, Jürgen
JLS
JF <fr...@freakmail.de> vous �crivez:
> Hallo,
>
> I read, that with the program "pcsleep" the 2nd CPU could be
> send to a state, where it uses less power. Is it possible to
> switch the CPU-fan off during this low-power-state?
If you (or any of your freind) are knowledge to electronics, it's
possible to build yourself a simple circuit (one resistor, one
transistor, one thermistor) to adapt the speed rotation on the fan
function of the heat from the processor. Or buy a all in one
thrmocontroled fan?
> Another question is, if it is possible to switch the whole
> CPU-Card off/on e.g. by a extern switch or by software?
IMHO, it's extrmly difficult to realise with no damage.
Cut the 5 V DC power suply from the mother board or daugter board?
IMHO, it's not the solution.
Any suggest: with a switch, short the output from the crystal
oscillator from the 2nd processor (or open the power supply). I have
not testing this solution, but IMHO, if the 2nd processor is not
clocked, the power consuption will probably reduced (?)
Any id�a?
Jean-Luc
Jess
JF <fr...@freakmail.de> wrote:
> I read, that with the program "pcsleep" the 2nd CPU could be
> send to a state, where it uses less power. Is it possible to
> switch the CPU-fan off during this low-power-state?
>
> Another question is, if it is possible to switch the whole
> CPU-Card off/on e.g. by a extern switch or by software?
Some 486 processors were fine with just a heatsink, if there was space
for a suitably big one, that might be a solution. (You would need
advice from someone with experience with the actual processor you
have.
Alternatively, if you can find an old XP professional PC, you could
set it up in the corner with no screen keyboard or mouse, and access
it via RDP, when needed.
--
Jess Iyonix
Steffen Huber
> Hallo,
>
> I read, that with the program "pcsleep" the 2nd CPU could be
> send to a state, where it uses less power. Is it possible to
> switch the CPU-fan off during this low-power-state?
I would investigate the possibility to just use a PC card without
a fan. The 486DX-100 cards are nearly as fast as the "586" cards
and were shipped fanless.
I am sure I have a spare card somewhere which I could give you
for the postage cost.
Steffen
--
Steffen Huber
hubersn Software - http://www.hubersn-software.com/
Chris Evans
<URL:mailto:sp...@huber-net.de> wrote:
> JF wrote:
> > Hallo,
> >
> > I read, that with the program "pcsleep" the 2nd CPU could be
> > send to a state, where it uses less power. Is it possible to
> > switch the CPU-fan off during this low-power-state?
>
> I would investigate the possibility to just use a PC card without
> a fan. The 486DX-100 cards are nearly as fast as the "586" cards
> and were shipped fanless.
Acorn & Aleph One's 100MHz 586 cards were fanless, the AMD 133MHz 5x86 CPU
we used, came with no heat sync and we fitted a HeatSync/Fan.
Chris Evans
--
CJE Micro's / 4D 'RISC OS Specialists'
Telephone: 01903 523222 Fax: 01903 523679
ch...@cjemicros.co.uk http://www.cjemicros.co.uk/
78 Brighton Road, Worthing, West Sussex, BN11 2EN
The most beautiful thing anyone can wear, is a smile!
JF
> In article <88ekbm...@mid.individual.net>, Steffen Huber
> <URL:mailto:sp...@huber-net.de> wrote:
>> JF wrote:
>> > Hallo,
>> >
>> > I read, that with the program "pcsleep" the 2nd CPU could be
>> > send to a state, where it uses less power. Is it possible to
>> > switch the CPU-fan off during this low-power-state?
>>
>> I would investigate the possibility to just use a PC card without
>> a fan. The 486DX-100 cards are nearly as fast as the "586" cards
>> and were shipped fanless.
>
> Acorn & Aleph One's 100MHz 586 cards were fanless, the AMD 133MHz 5x86 CPU
> we used, came with no heat sync and we fitted a HeatSync/Fan.
>
> Chris Evans
>
Will a HeatSink be enough, if the rest of the computer has no fan build in?
JF
> JF wrote:
>> Hallo,
>>
>> I read, that with the program "pcsleep" the 2nd CPU could be
>> send to a state, where it uses less power. Is it possible to
>> switch the CPU-fan off during this low-power-state?
>
> I would investigate the possibility to just use a PC card without
> a fan. The 486DX-100 cards are nearly as fast as the "586" cards
> and were shipped fanless.
>
> I am sure I have a spare card somewhere which I could give you
> for the postage cost.
>
> Steffen
>
Ah, that sounds good to me ;-) , a fanless card would be the best. The
app I use isn't very powerhungry, a little loss of speed wouldn't be so
significant.
For your offer of the spare card, I'll send you an E-Mail.
Greets Jürgen
JF
> Dans le message <hvrgnr$4bf$1...@news.eternal-september.org>
> JF <fr...@freakmail.de> vous écrivez:
>
>
> If you (or any of your freind) are knowledge to electronics, it's
> possible to build yourself a simple circuit (one resistor, one
> transistor, one thermistor) to adapt the speed rotation on the fan
> function of the heat from the processor. Or buy a all in one
> thrmocontroled fan?
Thanks for this suggestion, Jean-Luc, I also considered that. I will
take this in mind, if no other solution will be found.
> IMHO, it's extrmly difficult to realise with no damage.
> Cut the 5 V DC power suply from the mother board or daugter board?
> IMHO, it's not the solution.
> Any suggest: with a switch, short the output from the crystal
> oscillator from the 2nd processor (or open the power supply). I have
> not testing this solution, but IMHO, if the 2nd processor is not
> clocked, the power consuption will probably reduced (?)
> Any idéa?
Sounds good, but I don't know, how the rest of the card will behave in this
case. Perhaps anyone has risked that and could tell us his experiences?
>
>
> Jean-Luc
Greets, Jürgen
JF
> Some 486 processors were fine with just a heatsink, if there was space
> for a suitably big one, that might be a solution. (You would need
> advice from someone with experience with the actual processor you
> have.
Couldn't say anything about the processor, but concluding from the other
posters, I think it is a higher tacted 586, which needs a fan.
> Alternatively, if you can find an old XP professional PC, you could
> set it up in the corner with no screen keyboard or mouse, and access
> it via RDP, when needed.
>
That's nearly the way I worked, just before re-animating the PC-Card ;-) .
Greets, Jürgen
Chris Evans
I don't know. I doubt we could locate the chip specs and we never did any
tests i.e. fit a heatsink only and measure the temperature accuratly in
worst case scenario.
You could try it, the worst case should be frying the CPU which we can
replace for an unused but old stock 5x86 chip.
The complete cards are now £50
http://www.cjemicros.co.uk/micros/individual/newprodpages/prodinfo.php?prodcode=CJE-133+PRO3+NL
We have s/h spare CPUs of the 100MHz 586 type Acorn/Aleph One used though
you can't swap them for 133MHz 5x86 chip without various link changes to the
board, details of which would time consuming (i.e. Expensive) to find or
work out.