The GeForce 6 series of graphics accelerators from NVIDIA seems to have done a lot to help pull NVIDIA out of the quagmire of controversy and troublesome issues it fell into with the NV3x generation of GPUs. People who might have given up on NVIDIA are now paying attention again because the GeForce 6 family of GPUs performs well across the board. The comeback of SLI technology is another reason NVIDIA has more people leaning its way nowadays. Most of NVIDIA's current GeForce 6 series is available in AGP and PCI Express flavors. With the release of the 6600 line of cards, NVIDIA finally lauched its first native PCI Express GPUs, meaning they were designed for PCI Express. The 6600 GPUs represent the midrange of NVIDIA's line-up, and PCI Express is not widespread enough yet for any company to rely on sales of those products available in PCI Express form only. (One major reason is that AMD-compatible chipsets supporting PCI Express have been slow to come to market.) So, NVIDIA is making bridged AGP versions of the 6600 boards, too. NVIDIA wants to ship a high volume of these products to its partners, and that volume can be maximized only if AGP and PCI Express parts are available.