OCC has published a new review of the Gigabyte Radeon HD 2400 XT

Like I mentioned above, the Gigabyte HD 2400 XT uses a unique cooling method called "Screen Cooling". This takes a fan-less heatsink and extends it past the width of the PCB, making the card essentially a full size ATX card. This gives the video card a wider and thicker look, while effectively cooling it with zero noise level, from the lack of fans. This design also protects the VGA connection, which uses a ribbon cable to extend the port on the PCI bracket, from snagging or damage. By removing the outer connection bracket we can get a better look at the fins of the heatsink and the holes which allow air flow from the case to pass through them and cool the card.

Gigabyte Radeon HD 2400 XT Review