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Dynatron A22 V-Shaped Skived Athlon64 Heatsink Review
Dynatron A22 V-Shaped Skived Athlon64 Heatsink Review
  75%   
Abstract: The heatsink at first appears to be nothing more than a plain aluminum skived heatsink, but closer examination reveals a couple very effective innovations, not the least of which are the V-shaped fins.

 Manufacturer  Category  Published  Author 
Dynatron    Cooling / Heatsinks   Nov 02, 2005   Max Page  

Home > Reviews > Page: Final Heatsink Temperature Comparisons

FrostyTech.com Mk.II Synthetic Thermal Heatsink Test Results
Results based on readings from a 38x38mm copper interface die with 125W heat load on the Mk.II Test Platform. Thermal Test values for each heatsink were calculated by determining the rise over ambient temperature at time of test. Information on Frostytech's test methodology is available here.
Socket 939/940/754 compatible CPU heatsinks
manufacturer: model no.: *fan speed: 125w thermal test (°c) noise level (dba)

Gigabyte G-Power Pro high 18.6 71.9
Coolermaster Hyper6 high 20.5 54.7
Thermaltake Venus 12 high 21.7 68.1
ASUS Starice high 22.8 67.4
Coolermaster Aquagate Mini high 23.2 59.2
Thermaltake Polo 735 high 23.4 68.0
Cooljag SFO-H high 23.6 60.6
Alpha PAL-8150 23.7 58.9
Zalman CNPS9500LED (clip parallel) high 23.8 50.3
AVC Z7U3301001 (stock 939) high 24.6 59.9
Gigabyte 3D Cooler-Ultra high 24.8 63.0
Scythe Shogun high 26.0 45.9
EKL V8 high 26.3 57.5
Gigabyte 3D Rocket-Pro high 26.9 56.7
Gigabyte 3D Cooler-Pro high 27.0 62.5
Gigabyte 3D-Rocket 28.9 50.7
Vantec Mach1 high 29.2 56.9
CoolJag SFO-D(18SC) 29.6 64.0
Zalman CNPS7000A-Cu high 30.3 45.2
Dynatron SK-V24 (A41) 30.3 56.4
Zalman CNPS7000-Cu high 31.0 45.2
Coolermaster Hyper48 31.7 43.6
Scythe Kama SCKK1000 31.9 47.5
Scythe Samurai SCSM1000 high 32.1 51.6
Zalman CNPS7000B-CU high 32.3 44.9
Thermaltake Silentboost K8 32.3 49.7
Jetart JAX801 33.2 53.5
Dynatron A22 34.5 44.5
nPowertek NPH K8-1 34.6 52.2
Ajigo MF043-044 (stock 754) 35.0 45.4
Verax Quattro 1 36.9 30.9
Gigabyte NeonCooler 8-BL 37.7 42.0
Titan TTC-K8ATB/825/SC 38.7 63.1
Evercool K802-715 42.1 51.5
Evercool Magic Cooler 46.6 55.5
125w thermal test (°c) noise level (dba)
*heatsinks are ranked according to the 125w thermal test results column (rise over ambient temp.). low temperatures with low noise levels are considered best. for reference heatsinks with variable-speed fans, only the high speed (12v) fan test result is included in the comparison sheet; more detailed results reside in each specific heatsink review.

one of the down sides to thermally throttled fans is that if case temperatures remain too low, cpu temperatures can elevate due to the decreased rpm of the fan. the thermal test results for the dynatron a22 heatsink listed above are really only half the picture. the dynatron a22's rise above ambient temperature of 34.5°C is with the fan spinning at about 3000RPM - its the lowest speed. Because of the manner in which FrostyTech tests heatsinks, the ambient air temperature never rose enough to force an increase in the rotational speed of the Delta AFB0712HHB fan (where an ambient air temp of 42°C would have resulted in an impeller speed of 5700RPM). This factor is something we can normally circumvent by shorting out the contacts to the fans' thermistor, but in this case that sensor was too inaccessible.

Based on past experience, a rise above ambient temperature in the mid 20's would have been reasonable had the Dynatron A22's fan been spinning at the full 5700RPM. However, as we have not tested this, that potential will have to remain in the realm of speculation.

Considering the test results that we were able to compile from the Dynatron A22 operating in its default configuration, the heatsink certainly makes for a nice quiet solution. Temperature levels are leaning towards the warmer side of the scale, but that is most certainly due to the low-noise fan speed. The Dynatron A22 is a good heatsink which fulfills the role of cooling an AMD Athlon64 processor satisfactorily, but it would have been better if the thermal throttling had been left up to the BIOS and AMD's Cool 'n Quiet. What we have here is a lot of wasted potential, unfortunately.

Related Articles:

For more reviews on the latest heatsinks and cooling solutions, rely on FrostyTech's inventory of 350+ heatsink reviews. Here are a few other articles that you might enjoy as well...

1. Dynatron A41 V-Shaped Skived Athlon64 Heatsink Review
2. Evercool Magic Cooler MAG01CA Heatsink Review
3. Jetart JAK801 Heatsink
4. Cooljag E44C/180 Pentium 4 1U Heatsink Review
5. Cooljag 2QC/180 1U Socket 478 Heatsink Review
6. Cooljag JACE2DC/180 1U Socket 478 Heatsink Review
7. Alpha Novatech S-PAL8952 Pentium4 Heatsink Review
8. Verax P17CuX Ultra Quiet Heatsink Review
9. Spire Verticool SPA49B0 Socket A Heatsink Review

 Previous Page ° Heat Sink Review Index  

Table of Contents:

 1:  Dynatron A22 V-Shaped Skived Athlon64 Heatsink Review
 2:  360° View - Dynatron A22 Heatsink
 3:  Surface Roughness and Acoustic Comparisons
 4: — Final Heatsink Temperature Comparisons

List all Dynatron heat sinks that Frostytech tested?

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