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PC enthusiasts and professionals are constantly searching for ways to increase the performance of their PCs. Scalability—using multiple graphics processing units (GPUs) in a single system with output to a single monitor—is one approach to maximizing graphics and system performance. But, in the past, adding additional GPUs didn’t always achieve the desired performance increase. Two PCI graphics cards in one system, two GPUs on a single card, even multiple cards in a workstation rack configuration all had serious limitations.

Now, NVIDIA unveils a revolutionary approach to combining multiple GPUs in a single system to scale performance. NVIDIA® SLI™ (Scalable Link Interface) multi-GPU technology takes advantage of the increased bandwidth of the PCI Express™ bus architecture, and features intelligent hardware and software solutions that allow multiple GPUs to efficiently work together to deliver earth-shattering performance.


How it Works :

Bus bandwidth and system communication: NVIDIA SLI technology fully exploits the increased bandwidth provided by the latest bus architecture—PCI Express—when communicating between the GPUs and the CPU. Providing 60x the bandwidth of PCI, the PCI Express interface eliminates the bottlenecks caused by previous bus architectures and allows for maximum system performance in a multi-GPU configuration.

GPU communication: Featuring an intelligent communication protocol embedded in the GPU, and a high-speed digital interface, NVIDIA SLI-based GPUs can easily communicate with one another without the overhead associated with a bus-only implementation. In addition, unique software algorithms efficiently share the workload to deliver unbelievable performance.

Image Quality: Advanced compositing, rendering, and scanout technology delivers uncompromised image quality, eliminating the “flashing” effect found in previous solutions. NVIDIA SLI multi-GPU technology also supports both analog and digital output.

 

Performance Enhancement:

 

 SLI Certified Cards From EVGA.com
  • 256-P2-N377 : e-GeForce 6800 Ultra PCI-E
  • 256-P2-N376 : e-GeForce 6800 GT PCI-E
  • 128-P2-N368 : e-GeForce 6600 GT PCI-E