Heatsink Reviews and Analysis

TOP 5 Heat Sinks     TOP 5 Low Profile Heat Sinks     TOP 5 Liquid Coolers    
 Heatsinks by Brand / Mfgr      Reviews + Articless     Advanced Search    

Zalman CNPS6500B-AlCu Pentium 4 Heatsink Review
Zalman CNPS6500B-AlCu Pentium 4 Heatsink Review
Abstract: With a weight of 400 grams to contend with, the CNPS650BAlCu straps itself into the standard socket 478 heatsink retention mechanism with two blue springy pieces of plastic.

 Manufacturer  Category  Published  Author 
Zalman   Cooling / Heatsinks   Sep 02, 2002   Max Page  

Zalman CNPS6500B-AlCu Pentium 4 Heatsink Review

The recipe card for the CNPS6500B-AlCu reads like this; take 8 copper fins and 44 aluminum ones, place them all in a machine that squeezes everything together with a tremendous amount of pressure, and finally bolt in place with stainless steel screws.

To ice off this thermal cake, mill the base razor smooth, and perfectly flat. The B series of the CNPS65000-AlCu model differs from the original only in how they are mounted to socket 478 motherboards.

In the past mounting was accomplished by means of nuts and bolts. It was an effective method to be sure, but one that took a long time to complete, and was somewhat inconvenient too. Well, since we first tested a Zalman heatsink we have seen a steady stream of minor improvements and additions, and the CNPS6500B-AlCu is no different.

With a weight of 400 grams to contend with, the CNPS650BAlCu straps itself into the standard socket 478 heatsink retention mechanism with two blue springy pieces of plastic.

The new system is incredibly quick and easy and it would actually be really cool to see companies like Alpha or Swiftech use the same methods for their large heatsinks. But anyway, getting back the Zalman cooler at hand, we tested out the installation in a standard computer and it went forward without any glitches.

Heatsink Specsheet:
  • Model: CNPS6500B AlCu
  • Fan: 92mm case-mounted
  • Fan Dim: Power Cooler 25x92x92mm, 2500RPM, 12V, 3.36W
  • FHS Dimensions: 115x83x65mm
  • Weight: 400 grams
  • Surface area: 3400cm2
  • Thermal resistance: 0.30C/W
  • Machine milled base, aluminum and copper fan construction
  • Made & Sold by:
    Zalman Tech Co.
  • Cost: ~ $40USD
  • Sold By:
    • Heatsink Audio Sample Included.

      The two sets of tabs which now come out the side of the heats are flat, and without any holes. The blue plastic clip rests on each of these tabs and that all it takes to keep the CNPS6500B-Alcu in the socket firmly. I'd play it safe and remove the heatsink if the computer is being moved any great distances however.

      Basics on the Noise Reduction System

      The easiest way to improve the performance of a heatsink is to increase the amount of air moving through its fins. This is not the best way to improve a heatsink, but it is the easiest, and most common method.

      To this effect, computers have been increasingly getter louder and louder. In most situations we are apt to grin and bear it - tucking the computer under a table or putting headphones on and turning up the music. This is where Zalman steps in with their "CNPS" acronym for "Computer Noise Prevention System." In addition to the large 92mm fan that comes with the CNPS6500B-AlCu, they also include the FanMate 1. The FanMate 1 allows you to further decrease the degree of noise generated by the fan, by lowering the amount of voltage it receives, and in turn how fast it rotates.

      The Fan Mate 1 is rated to handle fans drawing 6W or less (via a three-pin power connector), and will output from between 12V to 5V depending on where the dial is set. The flower heatsinks comes with a 92mm fan on a adjustable armature. The mounting arm attaches to the case by using the first three slot card screw positions and a 25cm long fan wire plugs directly into the motherboard to offer RPM monitoring.

      ° Next Page 

      Table of Contents:

       1: — Zalman CNPS6500B-AlCu Pentium 4 Heatsink Review
       2:  Checking out the heatsink
       3:  Heatsink Test Parameters
       4:  Acoustic Test Results
       5:  Synthetic Thermal Test Results

      List all Zalman heat sinks that Frostytech tested?

      Facebook RSS Feed Twitter
      ° Got Feedback?
      ° Mk.II Test Platform
      ° Where To Buy?
      ° Manufacturer Index
      ° Industry Dir.
      ° Cooling Projects
      Recently Tested

      Arctic Liquid Freezer 120 CPU Watercooler Review

      Scythe Mugen 5 Rev B SCMG-5100 Heatsink Review

      Gelid Tranquillo 4 Air Cooled Heatsink Review

      Coolermaster Ergostand III Laptop Cooling Stand Review

      Noctua NH-D9DXi4-3U LGA2011 Xeon Server/Workstation Heatsink Review

      Noctua NH-L9x65 Low Profile Heatsink Review
      ...More Articles >>

      Websites you may also like:
      Since June 1999

      Find a Heatsink
      Latest Heatsink Reviews
      Top 5 Heatsinks Tested
      Top 5 Low Profile Heatsinks
      Top 5 Liquid Coolers
      Heatsinks by Mfgr / Brand

      Social Media
      Pinterest Info
      Contact Us / Heatsink Submissions
      Submit News
      Privacy Policy
      Suite 66

      © Copyright 1999-2024 All Rights Reserved. Privacy policy and Terms of Use
      Images © and may not be reproduced without express written permission. Current students and faculty of accredited Universities may use Frostytech images in research papers and thesis, provided each image is attributed.