The RADEON HD 6670 video card is positioned in the mainstream segment and features one of the “Turks” GPU, which offers plenty of power to use in HTPCs, without the need of an extra power connector and the reference 1GB model from AMD also takes only one slot inside the case.
HD 6670 comes with 480 stream processors and a 128-bit GDDR5 interface, with 512MB or 1GB of memory. Compared to the RADEON HD 5670, a video card from the same segment but from the previous generation, the 6670 has more shader units, texture units and higher core clocks.
More interesting is the fact that the HD 6670 (or HD 6450, HD 6570) can be paired with a Llano CPU for improving the platform performance even further.
Regarding connectivity, the RADEON HD 6670 supports 3-display Eyefinity.
AMD Turks Architecture:
DirectX® 11 support
AMD Eyefinity multi-display technology
AMD App Acceleration
AMD HD3D technology
AMD CrossFireX™ multi-GPU technology
Cutting-edge integrated display support
Integrated HD audio controller
AMD PowerPlay™ power management technology
AMD Catalyst™ software and HD video configuration software