Inktfish

Correct answer:
So it looks SUPER AWESOME
There you have it

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Zero4549

...also the bent ends redirect a bit back towards the fin above them instead of letting the air pass into the useless dead spot which would be in the center or so I would think.

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Greg121986

Air moving between the opening will create a suction force between the two halves. I am not sure what that would help, but that's what would happen based on my understanding of physics.

Thanato

Having the split down the middle would allow for more surface area, as well as better airflow to move throuh the heatsink pulling the heat off.

EntropyTTU

+1

There is a lot of marketing going on here, and with the other ones as well.

Not saying they don't perform a little better, but I highly doubt it makes more fluid flow increase, than it does aesthetics.

Besides, isn't the greatest fluid pressure and velocity from a rotating blade, on the outsides of the blades?

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ChIck3n

Perhaps it reduces resistance, and allows the fan to more easily push air through? If the air can flow faster, it might cools a little better. As adrienspawn said, there may be almost no cooling done in the middle of the fins compared to the outside (near heatpipes). Getting rid of the middle may cause the fan to be a little quieter, like removing the fan grilles on your case. I have no proof, just random ideas.

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cs_maan

Because if it didn't, it would blow all the other competing coolers away even more so than it already has .

Just kidding .

I would think the center gap is because of the "dead zone" that fans have where air does not blow, so they just decided to save some material and not add those extra few grams. Just my opinion though .

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stevenma188

Weight reduction!!!!

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Cromex3Bababoliba

So that the deazone (the middle)would have some air flow going through it.
Notice that it slopes towards the middle allowing air flow to go where it had never gone before? Thus more cooling effect? my 2 cents...