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Cooler Master IHC-H71 Copper Pentium 4 Heatsink
Cooler Master IHC-H71 Copper Pentium 4 Heatsink
  89%   
Abstract: The Cooler Master IHC-H71 fulfills this role by bringing highly conductive copper, heatpipes, and a good sized fan together.

 Company link  Category  Published  Author 
Coolermaster   Cooling / Heatsinks   Jun 17, 2002   Max Page  
Home > Reviews > Page Title: Close up look at the heatsin

IHC-H71 From All Angles

The Fan:YS-Tech make very well known fans amongst performance users because they, like Delta, produce some high-RPM versions. This particular fan is noisy, but not so much so as some Athlon based heatsinks will be. The seven fan blades are protected behind a nice wire fan grill (I don't think to highly of the laser cut ones) and draws power from a molex pass thru. A separate three pin connector hooks up to the motherboard from RPM monitoring.

Top: The two plastic retention clips work well at holding down the heatsink, but are a little difficult to engage because it seems as though the plastic is going to snap - the pressures are pretty taught. The fan attaches to the aluminum fin with screws and the heatpipes are positioned just under where the air moves fastest. The heatpipes transverse the entire width of the copper heatsink and supposedly help the cooling process. By how much we aren't really too sure.

Side A: On one side of the heatsink the heatpipes come out from the center and then wrap around and to the outside so they form a path for heat to follow. The idea is to take heat from directly over the processor and move it to the tips of the copper fins for faster dispersal. The heatpipes are hermetically sealed and 4mm in diameter.
Side B:
The vertical copper fins are 0.5mm thick and spaced 1.7mm apart. The fins are presumably dip-brazed to the base. Dip brazing is a fast and effective way to make a secure metal-to-metal bond between the fins and base with little metal distortion. The base of each fin has a small tab which helps make this joint nice and strong. The heatpipe intersects the fins about 17mm up from the base.

Heatsink Base:

I always recommend everyone look at the base of heatsink before making a final decision to purchase. The Coolermaster here has a sanded base which is pretty flat directly over the processor mounting area. The base need not be lapped, but some good thermal compound should be used.



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Table of Contents:

 1:  Cooler Master IHC-H71 Copper Pentium 4 Heatsink
 2: — Close up look at the heatsin
 3:  Heatsink Test Parameters
 4:  Acoustic Test Results
 5:  Thermal test results

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Time stamped: 8:34PM, 11.22.2017
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