AMD has launched its latest Radeon HD 6970 and Radeon HD 6950 video cards with 2GB of GDDR5 using a 256-bit wide memory bus. The new cards feature new 40nm CaymanGPUs produced by the Taiwan Semiconductor Manufacturing Company (TSMC). Retailers are expected to sell the Radeon HD 6970 for $369 and the Radeon HD 6950 for $299 starting today.
The Radeon 6900 series was originally designed for the 32nm node, but problems at TSMC forced the cancellation of the plans and a quick backport of the design for 40nm design rules. Cayman chips consist of
