In search of information for a possible mod ^^

[nigel]

Hi all,

I am looking for some help (information).
Its pretty straight forward what i need. I am looking for more information of heat transfer with copper and aluminium. I now that copper has a Thermal conductivity@ 20°C 390W/mK
And alu is 237W/mK.
and the TDP of a processor is the amount of heat i need to remove.
For instance i take a AMD Phenom II X4 955 with a TDP of 125W.

what would i need or how would I start on creating a cooler for that CPU

I was thinking along the lines of using only Copper. And take a large base and solder on several fins.

Annyone here that could help me out

[Yellowbeard]

What are you trying to accomplish? What type of cooler are you trying to build?

[nigel]

Originally Posted by Yellowbeard

What are you trying to accomplish? What type of cooler are you trying to build?

yeah sorry, I am trying to build an aircooler.
possible with a fan.

And I am trying to accomplish an air cooler for an cpu with an TDP of 125 W

Not for benching ore real life use but more for fun

[TiN]

You need to know maximum junction temperature of device which is cooled (Tj) , all thremal resistance of interfaces between CPU die and basement of your cooler. Also need to know heater area to calculate power output and distribution. After you know all these things, you should calculate neccessary heatsink area to remove generated heat to keep Tj at MAX - 20°C (or more, depends of what you want) to be safe.

If you have tight constrains about area and size of heatsink you may use heatpiper, or/and extra air flow by fan or blower.

But that's quite not worth trying, only as fun project. There are plenty of HSF's from variuos vendors, which designed to remove 125W of heat with a lot of sizes.... And waaay more cheap than design/production yourself cooler already

[Yellowbeard]

Unless you have a machine shop, plenty of time, plenty of materials, and lots of time to waste, I'd suggest buying a cooler. If you are going to try this just for fun anyway, good luck to you.

[nigel]

@Tin and Yellowbeard,
thank you for the input. and yes it would be a project just for fun ^^
But it seems i overloocked the amount of work that would be involved in this.