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Sibak AT01515B TwinHead Heatsink Review
Sibak AT01515B TwinHead Heatsink Review
Abstract: While we didn't fly around the world just to look at heatsinks, we have had the opportunity to look at several of their coolers, the first of which is the AT01515B "twinhead."

 Manufacturer  Category  Published  Author 
Sibak   Cooling / Heatsinks   Mar 22, 2002   Max Page  

Home > Reviews > Page: Test Results - Acoustic Measurements / Thermal Results

Acoustic Samples: Listen to this Heatsink!

With two fans spinning at around 4500RPM the Sibak AT01515B is noisier than you might initially expect for a heatsink with 50mm fans. The key here is fans, with two motors there is bound to be an increase in noise levels.

To hear for yourself what this heatsink actually sounds like, just click on the headphones and listen to the MP3 recording.

FrostyTech Acoustic Sampling Chamber

Listen to this Heatsink now.
Standard Waveform view of a 10 second recording. Click on the headphones to listen to an MP3 recording of this heatsink in operation.

Sound Level Measurements:

Listening to the actual noise a heatsink makes allows you to hear what pure numbers alone cannot get across. To further emphasize FrostyTech's reliance on cold hard facts when evaluating a heatsink, we also take Decibel readings with a sound level meter. The list of heatsinks which have had their noise level measured continues to grow as more are tested.

FrostyTech Sound Level Results
- Manufacturer Model Noise Level Scale
Zalman All Flower HSF 47.4/28.9 dB quiet
Noisecontrol Silverado 50.8 dB
Thermal Integration Ti-V77L 53.0 dB
Tocools Crown 54.5 dB
Sibak AT01515B 55.8 dB
Dynatron DC1206BMP 65.1 dB louder

The Sibak cooler comes in pretty much in the middle of the road, but on the noisier side. While one or two degrees in temperature mean a lot, the human ear has a hard time distinguishing between sounds with less than 3 dB difference. Keep that in mind when you look at the above sound level measurements. The 38mm Delta fan on the Dynatron heatsink is substantially louder than everything else.

Synthetic Temperature Test Results: *Ranked according to 100W small interface die test results.

FrostyTech Synthetic Temperature Test Platform Results
Mfg. Model Ambient Temp. 27mm large copper block 15mm small copper block 27mm large copper block 15mm small copper block Thermal pad No. Fans Fan Noise Clip force
50W 50W 100W 100W
1 Thermal Integration TI-V77L 26.5 39.1 44.4 57.5 63.6 grey 1 med med
2 Swiftech MCXC370 21.4 38.3 43.4 53.5 65.7 none 1 med med
3 Tocools Crown 23.2 38.8 53.2 47.9 70.2 none 1 loud stiff
4 OCZ Gladiator 21.4 33.3 47.3 50.6 70.3 none 1 very loud med
5 Vantec CCK-6027D 27.4 45.4 49.6 64.9 73.4 none 1 med med
6 Swiftech MCX370 22.3 42.0 46.1 60.3 75.6 none 1 med hard
7 Zalman CNPS6000-Cu 24.8 46.4 53.8 65.6 78.2 none 1 very low easy
8 AVC 112AM1 24.8 46.6 52.9 70.1 79.6 none 1 low stiff
9 Thermaltake Volcano 6cu+ 26.5 40.3 55.3 58.6 84.4 carbon 1 loud med
10 Spire 5T060B1H3R 26.7 42.7 57.5 64.6 85.1 none 1 low med
11 Zalman CNPS6000AlCu 24.9 48.3 56.3 72.2 86.0 none 1 low med
12 Thermalright CB-6L 24.6 50.3 57.7 73.8 92.7 white pad 1 low med
13 Sibak AT01515B 23.0 45.1 64.6 60.1 95.2 none 2 med stiff
50W 50W 100W 100W

Ouch! Believe it or not there is one good number for the Sibak AT01515B and that is 60.1 degrees on the 100Watt test with the large interface die. Every other test is really pretty poor, or just not worth the bother.

The Sibak is really limited in terms of what processors you can realistically use with it, and given the somewhat noisy characteristics you might be well advised to just pass it up and try something with a little more kick.

Rise Above Ambient Temp. (c)
Mfg. Model 27mm large copper block 15mm small copper block 27mm large copper block 15mm small copper block
50W 50W 100W 100W
1 Thermal Integration TI-V77L 12.6 17.9 31.0 37.1
2 Swiftech MCXC370 16.9 22.0 32.1 44.3
3 Vantec CCK-6027D 18.0 22.2 37.5 46.0
4 Tocools Crown 15.6 30.0 24.7 47.0
5 OCZ Gladiator 12.0 26.0 29.2 49.0
6 Swiftech MCX370 19.7 23.8 38.0 53.3
7 Zalman CNPS6000-Cu 21.6 29.0 40.8 53.4
8 AVC 112AM1 21.8 28.1 45.3 54.8
9 Thermaltake Volcano 6cu+ 13.8 28.8 32.1 57.9
10 Spire 5T060B1H3R 16.0 30.8 37.9 58.4
11 Zalman CNPS6000AlCu 23.4 31.4 47.3 61.1
12 Thermalright CB-6L 25.7 33.1 49.2 68.1
13 Sibak AT01515B 22.1 41.6 37.1 72.2
50W 50W 100W 100W

Well the final results, which are the rise above ambient temperature results point to just one area of usefulness for the Sibak AT01515B. Coupled with the large interface die and a 100W heat load it seems to produce relatively good OEM results. Bear in mind that when I say "relative" I mean against its not that great ranking.

The small interface die doesn't seem to be able to spread the heat quickly enough to really take advantage of the design of the Sibak AT01515B and consequently the temperatures here are rather high.

Given what we heard, and what we see thermally you are best served by looking to one of Sibak's other heatsinks for good cooling. The twinhead design is cool to look at, but eye candy doesn't always work as well as it really ought to.

 Previous Page ° Heat Sink Review Index  

Table of Contents:

 1:  Sibak AT01515B TwinHead Heatsink Review
 2:  Close up look at the heatsink
 3:  New Heatsink Test Parameters
 4: — Test Results - Acoustic Measurements / Thermal Results

List all Sibak heat sinks that Frostytech tested?

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