ASUS Extreme N7800GT TOP SILENT/2DHTV
The first thing you notice about this card is the very unique heatsink design.
In this position, the block of fins would be positioned above the CPU fan in a standard setup, allowing the graphics card to take advantage of the CPU fan to cool it down as well.
We were wondering how ASUS managed to make the heatpipe movable and maintain good contact with the heatsink at the same time. It turns out that ASUS lined the ‘tunnel’ inside the heatsink with thermal paste to ensure good heat transfer. In addition, the heatpipe is also strategically located so that part of it touches the base of the heatsink, which is copper, and directly in contact with the core.