On Aug 5, 2009, at 12:23 PM, Mac User #330250 wrote:

> The three peaces for the QuickSilver should be:
> * the processor daughter card (riser card, processor module)
> * the cooling fan and
> * the heatsink.
>
> For the cooling fan you should be able to use the one that is still  
> in your
> QuickSilver. I think it is the same for all the processors.
>

This is true ... the Quicksilver fan units are all the same.

This was not true of the Digital Audios, for example, as each  
processor type required its own fan module type.



> The processor daugther card and the heatsink are a unit when  
> assembled, but
> the original apple processor cards are build so that you need to  
> install the
> processor first, and then you are able to place the heatsink on it  
> with the
> latches engaged.

In a Quicksilver, as in a Digital Audio, the heatsink must meet  
several requirements:

1) the heat transfer pad must be directly above the processor die or  
dies, and

2) the cooling fins must accommodate the VRM (voltage regulator  
module) choke coil, and any other components which are above the  
seating plane of the processor.

This means that a DA or QS processor should never be bought (nor  
sold) without the heatsink with which it originally came.



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