It's a GPU 
  One thing 
    that nVidia would like everyone to know right up front is that they no longer 
    call their units video cards. They like the term GPU and that stands for Graphic 
    Processing Unit. It is no coincidence that the term GPU closely resembles 
    CPU. nVidia would like to make it plainly obvious that their video cards move 
    much of the load of graphic rendering off the CPU and onto the GPU. While 
    the original GeForce chipset did a good job of improving performance with 
    this approach, it became obvious that higher core clock speeds and memory 
    performance were necessary to keep improving performance. You can only push 
    a core speed so far though, and it took a move to the .18 micron architecture 
    of the GTS chipset to keep improving performance. Avid overclockers already 
    know that a move to a smaller architecture has immediate benefits not only 
    in performance, since more transistors can be added in the same space, but 
    that lower heat production is also a benefit. 
  The core 
    of the GTS cards now can run 200 MHz from the factory. While that alone is 
    an improvement, nVidia improved the inherent design and added the ability 
    to have more operations processed on the GPU. While the terminology may seem 
    confusing, the GeForce GTS chipset is capable of such operations as bump mapping, 
    shadow maps, shadow volumes, volumetric explosion, vertex blending, waves, 
    refraction, and on and on. What is truly impressive here is that up to 7 operations 
    can be performed in a single pass. Want more information on all those possible 
    operations? nVidia has a great 
    area on their site devoted to the explanation of many of these concepts. 
    
  One great 
    thing that was available on the original GeForce DDR cards is their DDR memory. 
    While it gets harder to clock memory speeds higher and higher, nVidia chose 
    to go with memory that effectively double its performance. The memory on the 
    GTS cards is clocked at 333 MHz by default. DDR memory is definitely going 
    to be popping up on products as far ranging as even the system memory of future 
    motherboards. Another thing that nVidia would like people to take notice of 
    are the initials GTS. They stand for Giga Texel Shader. A Giga Texel of rendering 
    ability is a huge improvement over the original GeForce chipset. So it should 
    be plainly obvious that the GeForce2 GTS cards should be a large improvement 
    over the original GeForce cards. So what makes the Outrageous GeForce2 GTS 
    different from the competition?
  
    