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Dynatron DC1U-B01 1U Copper Heatsink Review
Dynatron DC1U-B01 1U Copper Heatsink Review
  73%   
Abstract: Has Dynatron figured out the secret to making the worlds best 1U socket A heatsink, or are we looking at something which just makes the grade?

 Manufacturer  Category  Published  Author 
Dynatron   Cooling / Heatsinks   Apr 17, 2003   Max Page  

Home > Reviews > Page: Heatsink Test Parameters

FrostyTech Test Equipment
Thermal Acoustic
Omega HH501DK Type-K Thermometer. Omega HHSL1 Sound Meter.
Multiple Copper Interface Dies. Monophonic Mic & Digital Recorder.
Synthetic Temp. Test Platform. Acoustic Sampling Chamber.

FrostyTech Synthetic Temperature Test Platform:

The equipment that FrostyTech uses when evaluating heatsinks and other cooling products has been developed to best gauge the various qualities of today's cooling solutions. To maintain the best possible correlation between heatsinks, all of our tests our synthetic. From our experience, synthetic testing provides the most accurate and reproducible sets of results.

Our methodology currently focuses on the thermal performance of a heatsink on two different sized copper interface dies, tested at 50W and 100W heat loads. Acoustically, we record the noise signature of a particular fan and heatsink combo.

Sound Level Measurements

To measure the level of sound produced by a heatsink in decibels, we use an Omega HHSL1 sound meter. The HHSL1 is highly accurate between a range of 35-130 dB. To measure the level of noise produced, a heatsink is placed on a Melamine foam surface and the meter positioned about 12" above it and off to one side. The highest average level of noise is recorded.

Frosty Acoustic Sampling Chamber:

To record the noise generated by a particular fan and heatsink combination, we use a special enclosure box lined with 2" of foam which is sealed from the outside environment during the recording process. The thick layer of foam helps to ensure that the sound we record is only that generated by the heatsink/fan inside. A standard computer power supply is located outside the enclosure to power the heatsinks' fan.

A monophonic microphone is positioned about 6" from the center of the test chamber so it is out of the direct air flow path generated by the fan. A solid state digital recorder is used record the sound picked up by the nondirectional mic inside the case. The digital recorder has a frequency range of approximately 500Hz to 3500Hz.

The purpose of the enclosure is to record an accurate representation of the noise generated by a heatsink and fan combo - separate from any other external computer noises like hard drives or power supplies.

A Note about 1U Reviews

A 1U server case is only 1.75" thick, leaving effectively 30mm or so above the processor core for the entire thermal solution. Noise isn't much of a concern in this environment, but rather sheer cooling performance. Servers are expected to be up 99.9% of the time, and system problems due to an overheated processor is simply not going to fly.

This brings us to the problem with how to test 1U heatsinks accurately. Since the operating environment of every 1U heatsink is height limited, it would seem ideal to test 1U heatsinks as such. In this example, all 1U heatsinks would be tested with a plate directly above the top of the cooler so that the total distance from heatsink base to the base of this cover plate is 30mm.

Unfortunately this is where the problems arise. Every type of heatsink, including the average desktop one is a product of the environment to some degree. Some cases have their power supply located directly over the processor, while other people may use socket heatsinks on a slocket-based chip that would put sticks of memory in the direct intake path, etc. In the case of our hard working 1U heatsinks, intake fans, drafting, orientation of heatsink relative to airflow, and countless other factors can influence how the heatsink would perform within a specific 1U system.

Therefore unless otherwise noted, we will be reviewing all active heatsinks "removed from the system." The results of our tests on 1U heatsinks will not be under height-limited system conditions. Rather, each heatsink will be tested as if it is removed from the system, yielding more accurate comparisons to the other heatsinks being reviewed. The distinctions are slight, but very important for those of you dealing with decisions on what 1U cooling solutions to consider. Particular systems follow similar guidelines and 1U heatsinks can (and should) be tested for each case environment.

Passive 1U cooling solutions will be tested with the 30mm height restriction in place and use a common source and direction of draft air. The exact conditions of the test environment will be described for those particular 1U heatsink reviews.

Now that we've explained a little about how we test the heatsinks that cross our path, lets move forward and take a closer look at test results for today's heatsink.

 Previous Page ° ° Next Page 

Table of Contents:

 1:  Dynatron DC1U-B01 1U Copper Heatsink Review
 2:  The heatsink from all sides
 3: — Heatsink Test Parameters
 4:  Thermal And Acoustic Results
 5:  Final Temperature Results

List all Dynatron heat sinks that Frostytech tested?

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