A few years back most of the video cards on the market were ones that only needed a single slot to install. That was a nice thing for people that needed to be able to cram other expansion cards and multiple video cards into their computer. A single slot card is important if you are building a SFF or HTPC with limited space inside.
As the years went by and video card GPUs became more powerful, they also produced more heat. The extra heat meant that the cards had to get larger heat sinks and fans and started to need two slots inside the computer. Today those dual slot video cards are the norm and a single slot offering is the uncommon product. A company called Colorful has a new video card that might be perfect for the person needing a compact card.
The card is the Colorful IGame GTS 450. The card has a single slot design that is only a bit thicker than an iPhone 4. The card has a unique single slot cooling solution with a copper heat sink and a slotted metal plate above it to channel air through and increase the surface area.
The new card also has slots on the PCB for increasing the cooling even more. According to the maker, the special heat sink allows the card to cool 56% better than a normal single slot cooling solution. A fan blows cool air through the openings in the card to keep it frosty. The card looks nice and has a very unique design.
The downside at this point is that the card is only in the proof stage. The company is from China so there is no indication when the card will be offered in China and there is no word if the card will end up coming to the US either. Since I have never heard of this company I would bet, the card ends up being a Chinese market only product if it ever leaves concept stage.