[time-nuts] Rack-mounting an LPRO? (Heatpipe cooler)
Ed Palmer
ed_palmer at sasktel.net
Sun Feb 28 17:59:16 UTC 2010
Joe Gwinn wrote:
> At 2:02 AM +0000 2/28/10, time-nuts-request at febo.com wrote:
>> Date: Sat, 27 Feb 2010 20:02:05 -0600
>> From: Ed Palmer <ed_palmer at sasktel.net>
>> Subject: Re: [time-nuts] Rack-mounting an LPRO?
>> To: Discussion of precise time and frequency measurement
>> <time-nuts at febo.com>
>> Message-ID: <4B89CE9D.4060103 at sasktel.net>
>> Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
>>
>> Sorry, the pictures got lost. Let's try again.
>>
>> Ed Palmer wrote:
>>> What else is going to be in the rack? If your 1U enclosure is packed
>>> in tight between other devices there might be no cooling at all. You
>>> might need a fan to move some air.
>>>
>>> I don't know if you can find something like this, but I scavenged heat
>>> sinks from an old Compaq DL760 server that might fit your
>>> situation. Here's what the heat sink looks like. The aluminum
>>> plate is about
>>> 1/4" (6.4 mm) thick. Notice the heat pipes.
>>>
>>>
>>>
>>> Here's what it looks like on the LPRO. You'll have to drill holes in
>>> the plate to match the LPRO.
>>>
>>>
>>>
>>> It's not perfect, but it certainly does the job - particularly if you
>>> had a fan blowing through the fins. The total height is about 1.75"
>>> (45 mm).
>>>
>>> But remember, the more you cool the LPRO, the more power it will draw
>>> to keep itself warm so you don't want to overdo the cooling.
>>>
>> > Ed
>>>
>> [snip]
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>
> The aluminum fin and copper pipe assembly integrated with the heatsink
> plate is most likely a heat pipe of some kind, as that's what
> Thermacore makes. It's a model 2644, from the nameplate, but no joy
> at the Thermacore.com website.
>
> Joe Gwinn
>
If you want to find that heatsink, you'll probably have better luck with
the Compaq part # which is 190416-002 or just look for a used Xeon
processor that has that heat sink on it. Note that different servers
used different heat sinks so you have to see a picture. Right now there
are more than 20 CPUs with this heatsink on auction at the site we all
love to hate.
Ed
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