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Thermal Chamber Heatsink Testing Methods (Page 2)

By Chris Ramseyer on Oct 12, 2007 11:00 pm CDT - 1 min, 21 secs reading time for this page
Manufacturer: none

Methodology

There are actually two parts of a system that need to be controlled. The processor must have reliable heat output at full, middle and idle loads while the air surrounding the heatsink must also remain a constant temperature. Our new system meets both of these requirements and does so within 1 degree Celsius.

Construction (The CPU Die Simulator)

An AMD Opteron socket 940 processor will donate us its heat spreader for the project.

The next step is turning this block of copper into a simulated processor.

Just placing the heat spreader on the block is not going to work.

Here you can see the processor without the heat spreader. The IHS contacts the processor by the die. This is also where the heat comes from. Along the edges of the HIS a glue is applied which keeps the two in contact and also acts as an insulator.

The IHS also has a lip on its edges. The CPU die uses a thermal interface material (TIM) to help move heat from Point A to Point B.

To make the testing go like we want the size of the CPU die must first be carved out of the copper block. Off to the machine shop we go.

This is our simulated CPU after it was returned from the machine shop. It has been machined exactly to the specifications of the Opteron except the die is a centimeter taller to allow us to match the exact height of an AMD socket AM2 processor.

In this image you can see how the system is starting to come together. A PCB was used to simulate a motherboard.

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ABOUT THE AUTHOR - Chris Ramseyer

Chris Ramseyer started his career as a LAN Party organizer in Midwest USA. After working with several computer companies he was asked to join the team at The Adrenaline Vault by fellow Midwest LAN Party legend Sean Aikins. After a series of shake ups at AVault, Chris eventually took over as Editor-in-Chief before leaving to start Real World Entertainment. Look for Chris to bring his unique methods of testing Hard Disk Drives, Solid State Drives as well as RAID controller and NAS boxes to TweakTown as he looks to provide an accurate test bed to make your purchasing decisions easier.

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