NVIDIA? SLI? (Scalable Link Interface) is a high-performance technology that intelligently combines and scales graphics performance by having multiple NVIDIA GPUs in a single system. SLI Technology can scale both geometry and fill rate performance for two GPUs.

SLI is designed for PCI Express. This new bus has superior bandwidth (two to four times AGP 8X), support for isochronous data transport, and the capability to drive multiple high-speed graphics devices. AGP 8X was limited to one high-speed graphics device and was not a good candidate for SLI.

Yes, NVIDIA nForce4 SLI based motherboards can support any single PCI-Express x16 based graphics card. Two graphics cards are not required but recommended. For the best experience and upgrade potential, make sure to use an SLI-Ready PCI-Express graphics card. Always look for the SLI-Ready logo.

We have dedicated scalability logic in each GPU and a digital interface between GPUs to help enable this logic. In addition, we have a full software suite of advanced rendering algorithms that provide the best image quality.

Yes. NVIDIA is actively working with developers and educating them so that their titles can benefit from SLI as much as possible. By developing future titles on SLI technology, game developers are able to optimize their titles for SLI configurations. Additionally, the performance of SLI today gives developers a glimpse of how tomorrow's single GPU systems will perform. This allows them to tune for all elements of the system including CPU utilization.

All PCI Express based GeForce 6800 Ultra, GeForce 6800 GT, GeForce 6800, GeForce 6800 LE, and GeForce 6600 GT boards support SLI technology. SLI driver support for NVIDIA Quadro FX 4400, NVIDIA Quadro FX 3400, NVIDIA Quadro FX 1400 boards is coming soon. More information about SLI for NVIDIA Quadro can be found here.

The full list of SLI-Ready motherboards can be found here. This list is updated frequently with new SLI-Ready partners.

Basically, we store the state of the card before and after running a simplistic OpenGL program. After that we diff the states in order to find out, what was sent to the card. See our REnouveau documentation for further information.

No. The model for Quad SLI does not change with GeForce 7950 GX2, it is still exclusively available from system builders. This is the first step in bringing Quad SLI technology to the world.

Yes, NVIDIA and ATI provide drivers that work on AMD64. You can install them by executing emerge nvidia-kernel or emerge ati-drivers. If you have more questions about these drivers, you should read the Nvidia guide or the ATI FAQ.

nVidia is the worldwide leader in graphics processors & media communications devices. The unmatched breadth of NVIDIA's product line enriches 3D, 2D, video, audio, communications, broadband connectivity & high-definition digital video & television for every audience & price point -- from workstations to internet-enabled appliances to mobile PCs.

With a properly configured SBIOS, the NVIDIA® GeForce® 7950 GX2 will work with any PCI Express-compliant motherboard. Please see www.nvidia.com/GX2 for a list of compatible motherboards and SBIOS that have been tested by NVIDIA.

The performance estimation model is equipped to handle SLI and Crossfire. If there's no increase in your performance with SLI enabled, it might be because we don't have enough benchmarking data from your hardware combination with SLI. Again, you can help by running 3DMark06 and submitting your results.

The second SLI connector on the GeForce 8800 GTX is hardware support for potential future enhancements in our SLI software functionality. With the current drivers, only one SLI connector is actually used. Users can plug the SLI connector into either the right or left set of SLI fingers.

NVIDIA SLI differs in many ways. First, 3dfx SLI was implemented on a shared bus using PCI. The PCI bus delivered ~100MB/sec. of bus throughput, while PCI Express is a point-to-point interface that can deliver ~60x the total bandwidth of PCI. Second, 3dfx SLI performed interleaving of scan lines, and combined in the analog domain, which could result in image quality issues due to DAC differences and other factors.

Performance mode is supported by using both GPUs to combine rendering power and drive a single display. This mode is recommended and provides the best performance. Multiple monitor support is possible by using each GPU to drive a monitor. There is an option in the control panel to switch between multi-monitor (single GPU) and performance (multi-GPU combined rendering) modes.