AVC 117140 Sunflower Cooler
Cold Concept: $29.99
| Cooler Specifications |
| Fan Dimensions | 70mm x 70mm x 15mm |
| Rated Voltage | 12V DC |
| Rated Current | 0.2A |
| Rated Fan Speed | 5000 RPM |
| Max Air Flow | 33 CFM |
| Noise | > 45dB |
I first heard of AVC about a year ago from articles covering Computex. The Sunflower is quite an attractive design, resembling none other than a sunflower, due in part to the fin orientation. But more important for cooling, is the copper core it uses to transfer the heat to these fins. Copper, as I have learned in my materials engineering course (hey, this stuff actually comes in handy), is an extremely good heat conductor second only to silver.
In essence, we want to maximize thermal conductivity (ability to conduct) and minimize heat capacity (energy required to raise one unit temperature). Sparing you all the calculations, copper is better and satisfies both requirements. This, along with the fact that aluminum is more deformable and expandable, makes copper the perfect direct heat transfer agent from the CPU. AVC’s copper core is perfectly straight (according to my engineer’s straight edge). That all aside, lets get to the results.
| | Intel Cooler | AVC 117140 Sunflower Cooler |
| Idle | 33°C | 31°C |
| Load | 41°C | 38°C |
The Sunflower provided very nice cooling. The powerful fan probably had some benefit; buzzing out an impressive 33CFM at what I saw was 5400RPM even though it was only rated at 5200RPM. The fan, however, is quite loud but acceptable for a noticeable performance increase.
Pick up a Sunflower at Cold Concept for $29.99
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