nVIDIA was the first to enter the 'mainstream' PCI Express video market with the GeForce 6600 class GPU. ATi followed suit a few days later with its Radeon X700. While the companies are different, the technology behind the competing VPUs is actually quite similar. Built on IBM's 0.11 micron manufacturing process, the nVidia GeForce 6600 has eight pixel rendering pipelines and the 'GT' model has a core clock speed of 500 MHz. ATi uses TSMC's 0.11 micron manufacturing process, and its graphics core has eight pixel rendering pipelines too.



Link: PC Stats