Sager NP8150 Heatsink pressure/contact test results (thanks to IC Diamond).

I recently received a letter from IC Diamond containing the heatsink pressure/contact test that I requested.

Most people are probably aware of this test already, as it has been discussed in the forum.

This thread will contain my results from my tests of the CPU heatsink and GPU heatsink in my sager P series notebook.

First my specs:

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Sager NP8150 (clevo P150HM).
i7 2630QM (stock thermal paste from clevo/reseller that came with the brand new heatsink).
7970m (clevo version, came with heatsink when I bought it from another forum member, using IC Diamond thermal paste).
Copper foil tape mod on both the GPU and CPU.
8gb ram (2gb x4).
2 HDD (one in the optical bay).
1366x768 res screen.

Now a little info about the test before I give my results:

The procedure I followed while performing the test:

Here are the photos of the CPU test.

First, a photo of my CPU with the stock thermal paste:

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Next, my heatsink with stock thermal paste:

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Clean CPU:

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Clean heatsink:

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Black tape on heatsink removed so that it wouldn't interfere with the test:

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Now what you're all waiting for, the result of the CPU test

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New update, the GPU test:

First I have the photos of the clean GPU and it's heatsink:

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This is what the product used for testing looks like on the GPU:

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And the result of the GPU pressure/contact test:

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Not a good result...



When I have everything done, I will mail it back to IC Diamond so that they can analyze it.


Also I would like to add my test of stock thermal paste vs IC Diamond (this is only a CPU test, the GPU has only ever had ID diamond for as long as I've owned it).
I had the fans clean, max fan speed during both runs (Fn + 1), room temp was 19C.

Max temps using prime95:
Stock paste = 63C.
IC Diamond paste = 62C.

<s>Note: I haven't taken the heatsink off of the CPU since applying the IC Diamond paste to check that it spread well. I will do that and upload a photo for comparison (since there is a photo of the heatsink with stock paste). Update with that and more will come soon.</s>

Update: Here is the photo of the CPU and it's heatsink after this test (IC diamond vs stock paste). This is IC diamond in this photo:

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Wait I'm a little confused. I haven't heard of the "pressure test" as some kit you can buy. Apparently there is, and I'm sure I'm not the only one who found this new.

So .... how about a brief explanation on how this thing works? I just saw 4 pictures of dirty and clean heat sinks, a very familiar sight, and then a paper with some red on it. Doesn't really explain the mechanism of work. I'm assuming you stick it between the sink and the CPU/GPU and leave it on for some minutes then remove?

Some links on the product pls?

 

I think the product is this:
Tactile Surface Pressure Indicating Film And Sensors | Pressurex / Fujifilm Prescale Film | Contact Force Measurement | Surface Pressure Mapping | Pressure Measurement Film | Compression Force | Nip Impression Paper | Pressure Paper | Pressure Sensit

Also I'm about to edit the OP with an update. I did the test with the 7970m, the result looks very bad.

Uploading photos right now.

 

Very nice, thanks for the pictures.

I'll rep when I can. Do keep updating, eager to see some more

 

Thanks jaug1337 , I will definitely update this thread, but I will first have to send the result to IC diamond, it may take a while to reach him.

 

hmmm....two comments from my side after seeing these results:

1. heatsink lapping would probably improve the contact between heatsink and chip
2. uneven heatsink surfaces are the exact reason why TIMs exist in the first place

cheers