Radeon HD 7000 series
The Radeon HD 7000 series, codenamed "Southern Islands", is a family of GPUs developed by AMD, and manufactured on TSMC's 28 nm process.
The primary competitor of Southern Islands was Nvidia's GeForce 600 series, which shipped during Q1 2012,... Wikipedia
Codename: Southern Islands; London; Trinity; Sea Islands
DirectX: Direct3D 12.0 (feature level 11_1) (GCN version); Shader Model 6.5 (GCN) or Shader Model 5.0
Entry-level: 73xx - 76xx
High-end: 7870; 7870 XT; 7950; 7970
Mid-range: 7750; 7770; 7790; 7850