GeForce 8 Series
The GeForce 8 Series, or G80, will be the eighth generation of NVIDIA's GeForce graphics cards. Little was known about this series until an official announcement from NVIDIA.
Windows Graphics Foundation 2.0 (WGF 2.0) compliant, also known as Direct3D10 (DX10) and Direct3D 9.0L (DX9.0L).
Support for Microsoft DirectX 10, and related Shader Model 4.0.
Native PCI-Express X16 interface.
The G80 is expected to be released anywhere from August to October 2006.
It will be the first DirectX 10 and Shader Model 4.0 card to be released.
The G80 will be a 32 pipeline card with 32 pixel shaders, 16 vertex shaders, and 16 geometry shaders per core.
The G80 may be dual core.
There will be 2 cards released at launch, the flagship 8800GTX and the slightly slower 8800GT. The 8800GTX will have 512 MB of ram while the 8800GT will have from 256 MB-512 MB of RAM and will also have slower clock speeds than the 8800GTX.
The 8800GTX will cost $499-599 while the 8800GT will cost $299-399. 
The G80 will not have unified shaders, but will still be DirectX10 compliant.
The memory interface is said to be Samsung's new GDDR4 specification.
The series is also rumored to have fast memory and core clocks, and may be built on TSMC's 80 nanometer process technology.
Anandtech reports that the next generation of GPUs will range in power consumption from 130W to 300W. This increase in power consumption will make for higher-wattage Power Supply Units (to the 1 kW-1.2 kW range) and/or the addition of internal, secondary PSUs solely for powering the GPUs.
In addition, many manufacturers are looking at liquid-based cooling elements (as opposed to the traditional heatsink/fan combo) to keep the noise and heat levels down on these next-generation of GPUs.
The G80 should also feature UDI connections with full HDCP support.
There will be no AGP version of a GeForce 8 Card.
zdroj : wikipedia a google