Since the GeForce 8800 GTS is a scaled down version of the Flagship 8800 GTX it retains virtually all its features. It is also DirectX10 compliant, supports the new unified architecture, is Shader Model 4.0 ready and supports all the new anti-aliasing methods such HDR+ FSAA and FSAA 16X. For a more detailed read on the other new features that the 8800 GTS supports, please check our detailed review of the 8800 GTX.
Where the changes have occurred are the number of unified shaders the card supports which has been brought down from 128 to 96. The speed of the unified shaders too has been scaled back. The GTX runs its 128 SPs at a clockspeed of 1,350 MHz while the GTS runs its SPs at a clockspeed of 1200 MHz
There have been changes in the core speed too which has been reduced from the 575 MHz core for the GTX to 500 for the GTS. The amount of physical memory has been reduced to 640 MB from the 768 MB that the 8800 GTX possesses.
Specification Table
| GeForce 8800 GTS | GeForce 8800 GTX | |
| DirectX version | 10.0 | 10.0 |
| Shader Model | 4.0 | 4.0 |
| Vertex shaders | - | - |
| Pixel shaders | - | - |
| Unified shaders | 96 | 128 |
| GPU clock frequency | 500 MHz | 575 MHz |
| Memory clock frequency | 800 MHz | 900 MHz |
| Memory | 640 MB | 768 MB |
| Memory-bus | 320 bit | 384 bit |
| PEG connections | 1 | 2 |
As you can see from the table above there have been significant changes overall. Compared to the 8800 GTX the card is certainly about 25-30 percent slower. This does not affect the overall performance of the card as our tests have proven. It is still a good deal faster than older solutions.
i think u shud have included an ati 1950 xtx in the tests 
