Earlier we have reported thatRadeon HD 6450/6570/6670 graphics card will come out in the second quarter of 2011,which targets low-end market,supports  DirectX 11 and replaces Radeon HD 5450/5570/5670.

The three graphics card is supposed to launch on April 19th,adopt non-reference design and provide DVI and HDMI connectors.

AMD Radeon HD 6450 packs Caicoss core,features 160 stream processors,8 texture units and 4 ROPs,and it employs 512MB GDDR3 memory(64bit) or 1GB GDDR5 memory(128bit),its price is expected to be about US$50.

Radeon HD 6570 adopts Turks Pro core,packs 480 stream processors,24 texture units and 8 ROPs,and it employs 512MB-1GB DDR3 memory with memory interface of 128-bit.

Radeon HD 6670 packs Turks XT core,features 480 stream processors,24 texture units and 8 ROPs,and it employs 512MB-1GB DDR5 memory with memory interface of 128-bit.