searching for a wide alpha cpu heatsink (2nd request)

[Alexander Huemer]

Michael Kronsteiner wrote:
> Hello :)
>
> I have an intel- boxed cooler at hand (including fan, the round one) might this be big enough to fit your cooling needs?
>
> best regards
>
> Michael
> -------- Original-Nachricht --------
>   
>> Datum: Tue, 11 Nov 2008 15:35:13 +0100
>> Von: Alexander Huemer <alexander.huemer at sbg.ac.at>
>> An: Linux on Alpha processors <axp-list at redhat.com>
>> Betreff: Re: searching for a wide alpha cpu heatsink (2nd request)
>>     
>
>   
>> Hoover, Tony wrote:
>>     
>>> Interesting.  All my LX's and SX (and even my EB64+, back in the day)
>>> all had 3 wire fans.  I thought it was required.  IIRC, You could use a
>>> PC fan, but you have to switch the power and tach lines (I think, check
>>> pin-outs before taking my word on that).  I remember that I did re-wire
>>> a PC fan for one of my alphas.
>>>
>>>
>>> I guess if you have something to generate psuedo-tach pulses, you could
>>> passively cool an alpha (with a large enough heat-sink).  I'll  be
>>> interested in hearing the outcome.
>>>
>>> If you know a machinist, you could have him build a heat sink for you
>>> out of a block of aluminum.  Remember, surface area is the key, so use a
>>> small mill to make lots of fins.
>>>
>>>
>>> Good luck
>>>
>>> T
>>>
>>> On Mon, 2008-11-10 at 17:59 -0500, Jay Estabrook wrote:
>>>   
>>>       
>>>> Hi, Tony,
>>>>
>>>> He's looking to do this to an LX164, and mine only has a 2-wire fan,
>>>> so I think it may be OK?
>>>>
>>>> --Jay++
>>>>
>>>> Hoover, Tony wrote:
>>>>     
>>>>         
>>>>> You still have to have a fan.  Alpha's don't run if it doesn't detect
>>>>> pulses on the tach line for the CPU fan.
>>>>>
>>>>> T
>>>>>
>>>>>
>>>>> On Mon, 2008-11-10 at 18:35 +0100, Alexander Huemer wrote:
>>>>>       
>>>>>           
>>>>>> Marc Schlensog wrote:
>>>>>>         
>>>>>>             
>>>>>>> On Mon, 10 Nov 2008 17:00:18 +0100
>>>>>>> Alexander Huemer <alexander.huemer at sbg.ac.at> wrote:
>>>>>>>
>>>>>>>
>>>>>>>           
>>>>>>>               
>>>>>>>> hi,
>>>>>>>>
>>>>>>>> i got some offers from several people here on the list.
>>>>>>>> thanks a lot for that!
>>>>>>>> some people said they wanted to take a look in their basements or
>>>>>>>>                 
>> the
>>     
>>>>>>>> like. so, here is my second request: does anybody have a WIDE alpha
>>>>>>>> heatsink for me?
>>>>>>>> wide means > 5.5cm or 2.2in.
>>>>>>>> ideal would be somethink like
>>>>>>>> http://www.tbcs-online.de/e-bay/CPU/KN610-CA_SMP_1.jpg
>>>>>>>> that should be ~10cm or 3,9in wide.
>>>>>>>>
>>>>>>>>             
>>>>>>>>                 
>>>>>>> What are you trying to do? Turn your LX into a space heater?
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> axp-list mailing list
>>>>>>> axp-list at redhat.com
>>>>>>> https://www.redhat.com/mailman/listinfo/axp-list
>>>>>>>
>>>>>>>           
>>>>>>>               
>>>>>> no, i am trying to cool my alpha with less noise.
>>>>>>
>>>>>> _______________________________________________
>>>>>> axp-list mailing list
>>>>>> axp-list at redhat.com
>>>>>> https://www.redhat.com/mailman/listinfo/axp-list
>>>>>>         
>>>>>>             
>>>>> _______________________________________________
>>>>> axp-list mailing list
>>>>> axp-list at redhat.com
>>>>> https://www.redhat.com/mailman/listinfo/axp-list
>>>>>
>>>>>       
>>>>>           
>>>> _______________________________________________
>>>> axp-list mailing list
>>>> axp-list at redhat.com
>>>> https://www.redhat.com/mailman/listinfo/axp-list
>>>>     
>>>>         
>>> _______________________________________________
>>> axp-list mailing list
>>> axp-list at redhat.com
>>> https://www.redhat.com/mailman/listinfo/axp-list
>>>   
>>>       
>> hi tony,
>>
>> i have a 3 wires too.
>> re-wiring a pc fan is not possible to my knowledge, because the signal 
>> is completely different.
>> a pc wants to have pulses (as you said) so that they can measure the 
>> rotating speed of the fan.
>> the original fan of my alpha (some strange panaflo) gives a certain 
>> voltage on one wire if the fan is turning. when you stop the fan, the 
>> voltage goes up and the alpha stops. when you remove the fan, the 
>> voltage is missing and the alpha does not run either.
>>
>> my "alpha fan simulator" does just provide the required voltage, that's
>> all.
>>
>> building a heatsink from scratch is of course possible, but that's not 
>> the way i want to go, if i find somebody who has a BIG BIG heatsink for
>> me.
>>
>> -- 
>> regards
>> alex
>>
>> _______________________________________________
>> axp-list mailing list
>> axp-list at redhat.com
>> https://www.redhat.com/mailman/listinfo/axp-list
>>     
>
>   
thanks for your reply, michael.
i have such coolers too.
since there are two screws sticking out of the cpu die, it would be 
necessary to mill down two times in the heatsink and then drill 2 holes.
since the fins are very thin, they would become heavily damaged during 
that process.
i know that, because i already tried that ;(
unfortunately this is not an option, unless you have a 21164 600mhz cpu 
for me without the screws.

-- 
regards
alex