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Evercool NW11F Pentium 4 Heatsink Review
Evercool NW11F Pentium 4 Heatsink Review
Abstract: The Evercool NW11F-CLB825CA/LD2 is a socket 478 Pentium 4 heatsink based on a fairly standard design principle.

 Manufacturer  Category  Published  Author 
Evercool   Cooling / Heatsinks   Jun 05, 2005   Max Page  

Home > Reviews > Page: Examining the Heatsink

360° view - Evercool NW11F heatsink
The Fan:
The 80x80x25mm fan spins at 4000RPM, which moves about 48CFM of air. The wire fan guard keeps stray wires from entering the blades without restricting air flow. The fan draws power from a standard 3-pin motherboard fan header that supports RPM monitoring, and is internally illuminated by three bright blue LEDs.

Heatsink Top:
The base of the heatsink measures 83 x 69mm in size, with the central copper core being 25mm in diameter. The aluminum fins average about 20mm in length. Each fin is 1mm thick and spaced 2mm apart.

Side A:
The side of the NW11F heatsink gives a better indication of its two-part construction. The main body of the heatsink is 37mm tall. The 25mm thick fan and retention bracket make up the rest of the bulk of this cooler. Note here the spring-loaded clips which are used for securing both sections of the heatsink in place.

Side B:
The adjacent side of the heatsink is virtually identical. The fan is elevated 9mm above the tips of the fins, and the fan bracket is keyed to also accept 70mm fins.

Heatsink Base:
From the base it is possible to see the 25mm x 30mm tall copper insert. The copper remains about 0.1mm above the surface of the aluminum to ensure a positive contact with the processor's core. Surface finish is good (at or better than a roughness of ~8 microinches), and pretty flat across its diameter.

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Table of Contents:

 1:  Evercool NW11F Pentium 4 Heatsink Review
 2: — Examining the Heatsink
 3:  Surface Roughness and Acoustic Comparisons
 4:  Final Heatsink Temperature Comparisons

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