CPU fan question

"michael fenton" <> wrote:
>I've just upgrade a slot one compaq deskpro using a FC 370 pin convertor and
>a pentium III 550 FC processor . The problem being that the compaq has no
>connector on the motherboard for a CPU fan.

Have you checked that the CPU converter doesn't have the Fan power connector
on it - probably three terminal (+12, Ground/Zero volts and tacho/fan
rotation)?

>...Anyone know if it is possible to
>get a convertor that will convert a standard HDD power connector so it will
>connect to the fan supplied with the CPU.

Yeah, I would normally make one if needed, but a quick look through
Australian Personal Computer brings up # (prices look high), so
take a look though the mags, or try #.

>...The only other way I can think of
>curing this problem is to run a socket 7 CPU fan on the chip ,but the socket
>7 is physically smaller in size and the fans you can buy seem to be exact
>size for the CPU (I'm worried that as all the CPU is not covered it might
>get a bit warm!!!).

Yeah should work, as only the central portion of the CPU chip is thermally
attached to the heatsink. I've not tried to use a socket7 heatsink with an
S370, so I would try to use the P3's heatsink/fan, then see if I can replace
it's fan with another type of fan with the correct power connector, then
that should be fine. Just make sure it uses a ball bearing, and not a sleeve
one. Otherwise, I'd get the right power cable for the P3 fan.

>...If you've never heard of a convertor has anyone got any
>Idea's where I can get a good enough socket 7 fan that will be sufficient in
>doing the job (bear in mind that I live in the U.K.)

Ah, now you say. Well I live in Australia, (aus.*) so I can't help with
suppliers.

__ __
//)) //))| Richard RUDEK. MicroDek. Chatswood, Sydney. Australia. |
//\\ //\\ |# |
||

Yes you can get connectors like that. I am thinking you want the 3 pin
fan connector to a 4pin molex??
I'm sorry i dont know of any stores that have them, but i have seen
them at computer swap meets for around $3.

- Hide quoted text -- Show quoted text -
> >I've just upgrade a slot one compaq deskpro using a FC 370 pin convertor and
> >a pentium III 550 FC processor . The problem being that the compaq has no
> >connector on the motherboard for a CPU fan .Anyone know if it is possible to
> >get a convertor that will convert a standard HDD power connector so it will
> >connect to the fan supplied with the CPU .The only other way I can think of
> >curing this problem is to run a socket 7 CPU fan on the chip ,but the socket
> >7 is physically smaller in size and the fans you can buy seem to be exact
> >size for the CPU (I'm worried that as all the CPU is not covered it might
> >get a bit warm!!!). If you've never heard of a convertor has anyone got any
> >Idea's where I can get a good enough socket 7 fan that will be sufficient in
> >doing the job (bear in mind that I live in the U.K.)
> >Thanks in advance

Yes there are converters. You can make one yourself.

- Hide quoted text -- Show quoted text -michael fenton wrote:

> I've just upgrade a slot one compaq deskpro using a FC 370 pin convertor and
> a pentium III 550 FC processor . The problem being that the compaq has no
> connector on the motherboard for a CPU fan .Anyone know if it is possible to
> get a convertor that will convert a standard HDD power connector so it will
> connect to the fan supplied with the CPU .The only other way I can think of
> curing this problem is to run a socket 7 CPU fan on the chip ,but the socket
> 7 is physically smaller in size and the fans you can buy seem to be exact
> size for the CPU (I'm worried that as all the CPU is not covered it might
> get a bit warm!!!). If you've never heard of a convertor has anyone got any
> Idea's where I can get a good enough socket 7 fan that will be sufficient in
> doing the job (bear in mind that I live in the U.K.)
> Thanks in advance

> Michael

--
Peter Le



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PC Systems ?? 1999

"michael fenton" <> writes:
>I've just upgrade a slot one compaq deskpro using a FC 370 pin convertor and
>a pentium III 550 FC processor . The problem being that the compaq has no
>connector on the motherboard for a CPU fan .Anyone know if it is possible to
>get a convertor that will convert a standard HDD power connector so it will
>connect to the fan supplied with the CPU .The only other way I can think of
>curing this problem is to run a socket 7 CPU fan on the chip ,but the socket
>7 is physically smaller in size and the fans you can buy seem to be exact
>size for the CPU (I'm worried that as all the CPU is not covered it might
>get a bit warm!!!). If you've never heard of a convertor has anyone got any
>Idea's where I can get a good enough socket 7 fan that will be sufficient in
>doing the job (bear in mind that I live in the U.K.)
>Thanks in advance
>Michael

Haven't seen a converter like that myself either, but you can easily
construct one yourself.

The black wire on a HDD connector is 0V, can't remember off the top of my
head whether red or yellow is +12V, but you can easily tell with a
multimeter. Pop into your local electronics store to find a suitable
plug, wire it up and that's it.

You can get header pins and solder it onto the end of the wires if you
want a removable connection. Wrap a bit of tape once it's plugged it to
keep it secure.

The red wire of the fan goes to +12V, black goes to 0V and if there's a
third one, its for monitoring fan speed and can be left unconnected.

If you don't mind cutting the end of the fan connector, I suggest
soldering the wire of the fan and the wires coming out of your plug
directly.

If you have a socket 7 fan with power connections, you can cut the wirings
off and join that up with your bigger fan.

Alwin
---
Alwin Ngai
5th yr BSc(Hons)/LLB
University of Melbourne