We talked about it before, but it seems that AMD will launch the 40nm Radeon HD 5570/5670 (Redwood) and Radeon HD 5450 (Cedar) GPUs by the end of January or early February 2010.

Though yields of TSMC's 40nm process have reportedly improved, but capacity is still too low to fully service both ATI and NVIDIA. In related news, although Taiwan Semiconductor Manufacturing Company's (TSMC's) 40nm process yields have already improved, capacity is still not sufficient to supply the two GPU giants fully which may have an impact the launch schedules, the sources added.