HIS 6670 Fan 1GB GDDR5

HIS 6670 Fan 1GB GDDR5 has a reputation for employing unusual and efficient cooling solutions on its cards,

This is its low-profile rendition of the HD 6670, AMD's lower-end gaming GPU. Granted, it's the type of graphics core that's hard to get too excited about, but while it struggles to produce triple-figure frame rates, at least it doesn't come with a triple figure price tag.
The low profile design brings home theatre PCs to mind, and it comes with extra brackets that can include or exclude the VGA output alongside the 3D-capable HDMI v1.4 and dual-link DVI ports.
The HIS 6670 Fan takes the full 1GB GDDR5 memory option rather than the cheaper GDDR3, and so has a decent 4GHz memory clock alongside the usual 800MHz core clock.
The GPU chiller comes in the shape of a dual 45mm fan cooling solution that proves to be far thinner than the stock cooler and far more elegant.

Theatre luvvie

As a low power, low profile graphics card, we can see the HIS 6670 Fan 1GB GDDR5 making a beeline for many home theatre installations. While it's certainly not a silent solution, its main advantage is the cooling efficiency of the dual-fan system.
Under continuous full load the GPU never breached 50°C while the automatic fan speed remained at around 40 per cent. HIS offers a silent solution with its HIS 6670 iSilence 4 1GB DDR3 as an alternative, but it only uses the slower 1.6GHz DDR3.
Fixing the fan speed to its lowest 20 per cent setting only raised the temperature a whisker to 50°C, therefore we think you could happily slap on a fan controller to further reduce this. Compare that to the Sapphire HD 6670 Ultimate which reported temperatures of 100°C under full load.
The enhanced cooling on offer here enables easy overclocking too. There were no signs of strain taking the core up to 900MHz and the memory up to 4,600MHz, which provided a 10 to 12 per cent increase in frame rates.
With the two low profile brackets provided, you can keep all three main video outputs active, with the analogue VGA output sitting next to its digital DVI and HDMI v1.4 friends. The v1.4 HDMI output is compatible with 3D displays, which means you can make use of the AMD HD3D technology.