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Old February 22, 2010, 02:09 PM
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CMetaphor CMetaphor is offline
Join Date: May 2007
Location: Montreal, Canada
Posts: 5,082
Default Horizontal vs Vertical - Some evidence?

Was just reading through Nexus' site, looking at some of their products when I noticed this page:
Nexus LOW-7000 R2 UNIVERSAL Ultra Quiet CPU Cooler, only 7cm high!

Specifically, these two images:

Now I scratched my head for a moment there, wondering why Nexus would restrict the mounting of this cooler with the heatpipes oriented perpendicular to the "VGA card slot".

Then I noticed this:

"Please follow these positioning instructions as much as possible when installing your LOW-7000 CPU cooler into a tower chassis PC Case. The correct positioning guarantees an optimal performance of the heatpipes.
When installing the LOW-7000 in a desktop or horizontally oriented pc/htpc case (where the cooler will be positioned with the fan horizontally) you can choose any positioning method."

I believe this to be the first definitive proof I've seen that heatpipe coolers do not always behave the same depending on their orientation (horiz. or vert.). I remember I mentioned this in a HSF review comment thread a while back, but it's interesting to see a manufacturer admitting to the differences. In the case above, it seems as if when using this cooler in a vertical (tower) type setup, the heatpipes would not work efficiently with the heatpipes being vertical as well.

Interesting food for thought - perhaps a reason to re-test some of the HSFs and why sometimes they perform better or worse without explanation. It seems to come down to its orientation and the orientation of the case. Discuss?

"Backed by common sense and physics!" -Squeetard
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