The Notebook Cooler is large enough to hold my Pavilion DV7 and also acts as a keyboard riser making typing more comfortable.
Powered by a spare USB port on the laptop, the Zalman Notebook Cooler fan is loud enough to be heard, but much quieter than the laptop fans when they spin up so the overall noise is reduced considerably. The ZM-NC2000 features an additional USB port so you do not lose out. The surface is made from aluminium to conduct heat more effectively, while the underside is plastic.
The table below shows the difference between no cooler, passive cooling (fans off) and active cooling (fans on 50%). Temperatures measured with SpeedFan 4.49
|Test||Temp CPU||Temp GPU||Temp HDD||Temp Core|
|Idle (no cooler)||46°C||46°C||32°C||46°C|
|Load (3DMark11) (no cooler)||89°C||90°C||36°C||90°C|
|Idle (passive cooler)||41°C||41°C||33°C||40°C|
|Load (3DMark11) (passive cooler)||57°C||57°C||34°C||56°C|
|Idle (active cooler)||38°C||42°C||32°C||38°C|
|Load (3DMark11) (active cooler)||54°C||53°C||32°C||55°C|
These results certainly speak for themselves and show the Zalman Notebook Cooler ZM-NC2000 is effective in providing additional cooling for laptops. Highly recommended.