Smallish LGA775 Heatsink Roundup - Part 2

Cooling
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COMPARISONS (Continued)

Note: All the comparison tables below are aligned to the closest SPL levels.

Comparison:
Big Shuriken vs. Nexus LOW-7000 vs. Silverstone NT06-E
Scythe Big Shuriken
Nexus LOW-7000
Silverstone NT06-E (Nexus fan)
SPL@1m
Thermal Rise
SPL@1m
Thermal Rise
SPL@1m
Thermal Rise
23 dBA
21°C
24 dBA
21°C
 
18 dBA
22°C
18 dBA
23°C
16 dBA
29°C
13~14 dBA
27°C
 
13 dBA
30°C
12 dBA
28°C
12 dBA
33°C
11 dBA
34°C
 
11 dBA
43°C

The Nexus LOW-7000 performed very similarly to the Scythe Shuriken, posting almost identical numbers at equivalent noise levels. The Silverstone NT06-E's performance was more difficult to judge as there were few direct points of comparison with our reference Nexus fan. At 13 dBA, the CPU ran 3°C warmer than the Shuriken at 13~14 dBA. At 12 dBA the NT06-E was at a 5°C disadvantage to the LOW-7000. At 11 dBA, performance was extremely disappointing — it got beat down by the Shuriken by a sizable 7°C margin.

It would seem that the NT06-E is a slightly less efficient than the Shuriken and LOW-7000 at higher fan speeds. At low fan speeds, the difference increases dramatically. Looking at the NT06-E's design, we would say the combination of its height and its tight fin spacing is to blame for its poor low airflow performance. Narrow fin spacing makes it more difficult for the fan to push air through them — the LOW-7000 doesn't have that problem. The Shuriken's fins are also tightly grouped, but much more of the heatpipe surface area is directly beneath the fan, and as the Shuriken is almost one inch shorter than the NT06-E, the air blowing from the fan does not have to travel as far.

Comparison: Big Shuriken vs. Cooler Master Geminii S
Scythe Big Shuriken
CM Geminii S
CM Geminii S
(Nexus fan)
SPL@1m
Thermal Rise
SPL@1m
Thermal Rise
SPL@1m
Thermal Rise
23 dBA
21°C
24 dBA
18°C
18 dBA
22°C
20 dBA
21°C
16 dBA
21 °C
13~14 dBA
27°C
14 dBA
29°C
13 dBA
25°C
12 dBA
32°C

The Cooler Master Geminii S wasn't able to clearly defeat the Shuriken, at least not with the stock fan. At 9V, it generated 24 dBA, and operated 3°C cooler than the Shuriken producing 23 dBA. At 5V/14 dBA however, the roles reversed, with the Shuriken posting a 2°C lead despite generating half a dB less at 9V. Pairing the Geminii S with our reference fan greatly improved its low airflow performance. At 9V/13 dBA it was 1 dB quieter than the stock fan at 5V, yet managed to cool the CPU by an extra 4°C.



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