Diamond Thermal Grease Testing

jmke · 23rd January 2007, 15:34

Typical testing on a CPU platform does not control for this factor and as such, results are a mixture of the grease's thermal performance and its thickness as applied. Without compensating for the thickness of each sample, it is possible that a grease with lower thermal conductivity will perform better than one with higher thermal conductivity.

To correct for grease thickness, thermal bulk conductivity and thermal impedance, a specially designed and built calorimeter was used. This is a precise instrument that cost about $75,000 to build.

http://www.overclockers.com/articles1389/

Rutar · 23rd January 2007, 16:13

still want to see real world numbers

jmke · 23rd January 2007, 16:25

you know that you can scroll down on that page, right?

Quote:

To show an example that is a little closer to the real world, we did our own in-house testing to collect thermal resistance data using a PC test bed with a Pentium D 2.8 GHz processor and a Thermaltake heat sink, running at 100% CPU power.

Rutar · 23rd January 2007, 16:30

yes, but I want the numbers in degrees

SuAside · 24th January 2007, 08:23

"[FONT=Arial, Sans-Serif]As a side note, this is also a very nice polishing compound!"

probably a wee bit expensive for that :P
[/FONT]

23rd January 2007, 15:34	#1
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 78,416	Diamond Thermal Grease Testing Typical testing on a CPU platform does not control for this factor and as such, results are a mixture of the grease's thermal performance and its thickness as applied. Without compensating for the thickness of each sample, it is possible that a grease with lower thermal conductivity will perform better than one with higher thermal conductivity. To correct for grease thickness, thermal bulk conductivity and thermal impedance, a specially designed and built calorimeter was used. This is a precise instrument that cost about $75,000 to build. http://www.overclockers.com/articles1389/ __________________

24th January 2007, 08:23	#5
SuAside Member Join Date: May 2004 Posts: 402	"[FONT=Arial, Sans-Serif]As a side note, this is also a very nice polishing compound!" probably a wee bit expensive for that :P [/FONT] __________________ Computed by a Core 2 Duo E6400 (2.13Ghz @ 3.2Ghz) kept frosty by a Zalman CNPS9700 on an Asus P5W DH Deluxe, fed by 2x 1Gb OCZ PC2-6400 4-4-4-12 @ 1600FSB 1:1 and puked back out by a MSI RX1950Pro.

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23rd January 2007, 16:13	#2
Rutar Member Join Date: Apr 2005 Posts: 2,243	still want to see real world numbers

23rd January 2007, 16:30	#4
Rutar Member Join Date: Apr 2005 Posts: 2,243	yes, but I want the numbers in degrees