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Sibak AC06725TH Copper Core Heatsink Review
Sibak AC06725TH Copper Core Heatsink Review
Abstract: The copper insert does not come all the way up to the surface of the heatsink however so it is hard to say just how large it really is.

 Company link  Category  Published  Author 
Sibak   Cooling / Heatsinks   Jul 08, 2002   Max Page  
Home > Reviews > Page Title: Close up look at the heatsink

AC06725TH From All Angles

The Fan:

This is a 6000RPM fan if we are correct, and given the amount of noise this heatsink creates we probably are not too far off. The fan grill is a good idea as it does help prevent fingers from becoming cut, and chewed up by the spinning blades. Even more importantly, it prevents the fan from becoming jammed if something is sucked in. The metal frame surrounds the fan impeller but it is not actually part of the fan.

Top: We really expected to see a big cylinder of copper showing through the top of this heatsink and were surprised when there wasn't one. I suppose the hole for the copper bar is not drilled all the way through to the top. The center area is about 40mm x 33mm in size. The fins are just over 1mm thick and spaced about 3mm at the very edges.

Side A: The aluminum surrounding the fan is almost the same size as the heatsink itself and even though it looks solid, offers no thermal advantages really. The frame is there to protect the fan, and this works better than those flimsy Thermaltake versions.
Side B:
Clips are either really well made, or just plain dodgy. This heatsink uses a clip which could have been designed a lot better than it was. It's not just that it uses a screwdriver to be engaged, it is that it just doesn't seem like a very user friendly design. Also, as each side of the clip are very similar it is easy to confuse which side should face the cam arm of the socket.

Heatsink Base:

Sibak got the base right - the copper is flush to the aluminium and the surface finish is excellent. The copper insert is what makes contact with the processor core and it is both flat and smooth. The copper portion of the base is 32mm in diameter which makes me wonder if this heatsink won't soon be showing up in a Pentium 4 version.

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Table of Contents:

 1:  Sibak AC06725TH Copper Core Heatsink Review
 2: — Close up look at the heatsink
 3:  New Heatsink Test Parameters
 4:  Acoustic Test Results
 5:  Synthetic Temperature Test Results

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Time stamped: 7:41PM, 10.22.2019
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