Weird CPU heatsink mating surface

[zhoulander]

What's the deal with this heatsink base? Are the grooves to accommodate excessive factory applied thermal paste? I have two other heatsinks from the same seller that have normal smooth finishes like you'd expect on a CPU heatsink.

 

[azev]

wow, that is the first I've seen them like that !!!

 

[Deslok]

what did these come out of? i've seen micro-grooved surfaces but not one like this usually i polish heatsinks to a mirror finish if i have time

 

[zhoulander]

These are heatsinks that came in my Natex E5-2670/2600CP bundle.

 

[Deslok]

is it this model? Passive Copper Heat Sink for LGA2011

also i wonder if i see a heatpipe in your picture? perhaps they're direct contact pads for the pipe...

 

[Patriot]

That is even more odd than the S604 boxen that had no thermal paste on them.

 

[RyC]

My Natex bundle heatsinks are the same, but I removed them to use the Intel tall passive ones for the P4000M

 

[Fritz]

Wow, never seen anything like that before.

 

[zhoulander]

is it this model? Passive Copper Heat Sink for LGA2011

also i wonder if i see a heatpipe in your picture? perhaps they're direct contact pads for the pipe...

My heatsinks came with the motherboard, but I think it's safe to say that link will get you this type of heatsink or the normal one (pic below). I think it does use a vapour chamber.

Here is my normal set that came in the same order. Very happy I waited for the CPU socket protectors, since there is a lot of gunk that would have probably ended up in the LGA pins.

EDIT: looks like a Dynatron R15 Dynatron Corporation - the leading manufacturer of CPU cooling products.