Techiton

AMD has launched their new 5800 series of graphic cards called the Evergreen series and one of their first two models are out - the HD5850 and HD5870.

All graphic cards starting with the HD5xxx are part of this new evergreen family which is based on the 40 nanometer fabrication technology and has support for the new DirectX 11. The HD5870 is the fastest single-GPU graphics card available, the HD5850 on the other hand is slower but with lesser power consumption, cheaper and yet a powerful graphics. The detailed specifications and review links can be seen below.

AMD launches the fastest graphics card on the planet - HD5970

HD5850 Specifications:
RAM Size: 1024MB GDDR5
Memory bus size: 256bit
GPU frequency: 725Mhz
Memory frequency: 1000Mhz
Stream Processors: 1440
TDP (Max): 151W
DirectX Support: Version 11
Price: $299

HD5870 Specifications:
RAM Size: 1024MB GDDR5
Memory bus size: 256bit
GPU frequency: 850Mhz
Memory frequency: 1200Mhz
Stream Processors: 1600
TDP (Max): 188W
DirectX Support: Version 11
Price: $399

Links to Review Sites:
Guru3D - Radeon HD 5870 Review
OverClockersClub - Sapphire HD 5870 Review
TechSpot - ATI Radeon HD 5870 Review
HardwareCanucks - Sapphire Radeon HD 5870 1GB GDDR5 Review
AnandTech - AMD’s Radeon HD 5850: The Other Shoe Drops
HardOCP - AMD's ATI Radeon HD 5850 Video Card Review
PCGamesHardware - Radeon HD 5850 reviewed: The DirectX 11 bargain
PCPerspective - AMD Radeon HD 5850 1GB Review - Cyprus gets a bit cheaper