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    

Dynatron Model-638 Copper Heatsink Review
Dynatron Model-638 Copper Heatsink Review
Abstract: If you haven't already heard of Dynatron then you really don't know your performance heatsinks very well.

 Manufacturer  Category  Published  Author 
Dynatron   Cooling / Heatsinks   Oct 04, 2001   Max Page  
Dynatron Model-638 Copper Heatsink Review

If you haven't already heard of Dynatron then you really don't know your performance heatsinks very well. We had the pleasure of introducing Dynatron to the world when they first introduced the Model-L Microfin heatsink.

While the Model 638 does indeed use thin-fin construction, it is not a Microfin heatsink. Microfins are the name given to a particular manufacturing process more commonly known as skiving. Dynatron's claim to fame, and the overclockers delight, was their ability to produce the tightest fin pitches currently available. Fin thickness is equally impressive at only 0.3mm on average.

Heatsink Specsheet:
  • Model: DY1206BH-638
  • Fan: Delta, 7000RPM, 45CFM, 12V, 43dBa, 0.8A.
  • Fan Dim: 38x60x60mm
  • Heatsink Dim: 81x60x64mm
  • HS Material: Copper, Aluminum shroud
  • Mfg by: Dynatron
  • Cost: ~$45

Sold By: Dynatron
Heatsink Audio Sample Included. Intended for use on Socket 370/A processors. Intended for use on Socket 423 processors.

That screaming fan says something...

The 38mm Delta fan is like a little turbine engine on top of this cooler.

It's noisy, it's speedy, and it cools like no other fan would. The fan features focused flow capabilities by using a set of nine stationary fins built into the fan body itself.

The seven bladed impeller is essentially the standard to what you might expect to see on a 25mm fan, and is not really any deeper than normal, so the remaining height of the fan is taken up by the flow directors. The nine fins are arranged in the opposite direction to the impeller and help to direct the 45CFM worth of air flow directly downward.

Dynatron ship the Model-638 with a nice chrome fan grill attached. It should be noted that while most of the time fan grills are really just for show, in this case it's serving a very real purpose.

Now, when we review heatsinks they generally get taken to pieces several times before the review is complete. Unfortunately I also removed the fan grill for a moment and the 38mm Delta managed to take a nice sized bite out of my finger in the process.

That's real blood, and yes I know I should have put the damn grill back on before powering up the beast, but hopefully you'll learn the lesson I overlooked in my haste.

Thin Copper Fins:

The copper fins are thin and connected to the base by means of thermal adhesive (from what we can see). Although they appear to be skived from the side, this is more slight of the hand than anything else.

The side of the copper base is slightly brought up and this obscures the joint between the fins and the base.

On the other hand this also keeps the Model-638 looking very clean from the outset. Like other Dynatron heatsinks, this cooler uses fins measuring about 0.3mm thick to yield optimal thermal properties in moving the heat to the surrounding environment.

° Next Page 

Table of Contents:

 1: — Dynatron Model-638 Copper Heatsink Review
 2:  Looking at the heatsink from all angles
 3:  Heatsink Test Apparatus - Acoustic, Thermal
 4:  Thermal Test Results, Acoustic Sample
 5:  Conclusions on the DY1206BH-638

List all Dynatron 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

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

Scythe Fuma SCFM-1000 Heatsink
...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 1999-2023 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.