AMD has today launched its latest 28nm GCN based products - The Radeon HD7800 Series GPU's which feature the Pitcairn core used in the HD7870 and HD7850 GPU's. The HD7800 are the last of the Southern Island lineup to feature the Graphics Core Next Architecture and provide a sweet spot for HardCore gamers.

The HD7870 is equipped with the Pitcairn XT Core featuring1280 GCN stream processors, 80 (TMUs), 32ROP's and a 256-bit wide 2GB GDDR5 memory. The HD7870 is labelled as Ghz Edition which makes it the second card in HD7000 Series lineup to feature a core clock of 1000Mhz, Memory runs at 1200Mhz (4.8Ghz Effective Quad Data Rate).

AMD Radeon HD 7870

1280 Stream ProcessorsCode Name: Pitcairn XT2GB GDDR5 Memory BufferRelease Date: 19th March 2012TDP: 175WPrice: 349 $

The HD7850 features the Pitcairn Pro packing1024 stream processors, 64 TMUs, 32 ROP's and the same memory specs as HD7870. The Core clock is maintained at 860Mhz, Memory runs at 1200Mhz (4.8Ghz Effective).

AMD Radeon HD 7850

1024 Stream ProcessorsCode Name: Pitcairn Pro2GB GDDR5 Frame BufferRelease Date: 19th March 2012TDP: 130WPrice: 249 $

The Radeon HD7870 would be available for $349 and would compete against GeForce GTX570, The Radeon HD7850 would be available for $249 and providecompetitiveperformance against GeForce GTX560Ti. Retailavailabilityof the cards is expected on 19th March 2012.

You can check out Reviews from various tech sites below:

AMD Radeon HD7870 and HD7850 Review @ TechPowerUpAMD Radeon HD7870 and HD7850 Review @ AnandtechAMD Radeon HD7870 and HD7850 Review @ TechSpotAMD Radeon HD7870 and HD7850 Review @ Vr-zoneAMD Radeon HD7870 and HD7850 Review @ HexusAMD Radeon HD7870 and HD7850 Review @ HardOCPAMD Radeon HD7870 and HD7850 Review @ ComputerbaseAMD Radeon HD7870 and HD7850 Review @ PCPerspectiveAMD Radeon HD7870 and HD7850 Review @ Guru3dAMD Radeon HD7870 and HD7850 Review @ Tweak Town