AMD has introduced two graphics cards to its Radeon HD line-up in the form of the HD 7870 and the HD 7850. They are codenamed the Pitcairn XT and the Pitcairn Pro, respectively.

The duo sits in between the previously launched high-end 7900 series and budget friendly 7700 series. The HD 7870 and HD 7850 feature the same 28nm process and graphics core next (GCN) architecture as the HD 7900 Tahiti series.

"Engineered for supremacy, designed for efficiency and packed with incredible features, the AMD Radeon HD 7800 series offers more than the just world’s most advanced graphics: it offers the incredible performance every gamer deserves,” said Matt Skynner corporate vice president and general manager of the GPU division at AMD. “AMD continues to lead the industry in desktop graphics innovation with unrivalled computing and unequalled technologies like our game-changing GCN Architecture."

Both the HD 7870 and HD 7850 come with 2GB of GDDR5 RAM and the PCI Express 3.0 interface. However, the HD 7870 has a faster clock speed of 1GHz compared to 860MHz on the HD 7850.

The firm has included a number of different technologies on both graphics cards including AMD Eyefinity, CrossFire, HD3D and ZeroCore.

AMD said the HD 7870 and HD 7850 can be purchased for around £260 and £185, respectively from a number of add-in-board partners including ASUS, Gigabyte, HIS, Sapphire and MSI.