Radeon HD 6000 series
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The Northern Islands series is a family of GPUs developed by Advanced Micro Devices forming part of its Radeon-brand, based on the 40 nm process. Some models are based on TeraScale 2, some on the new TeraScale 3 introduced with them. Wikipedia
Codename: Northern Islands; Vancouver
DirectX: Direct3D 11; (feature level 11_0); Shader Model 5.0
Entry-level: 64xx - 66xx
High-end: 68xx - 6970
Mid-range: 67xx
OpenCL: OpenCL 1.2