NVNews.Net takes a look at NVIDIA SLI Technology for Intel X58 Motherboards
The license key is an important feature since it is dependent on certification by NVIDIA, which includes verification of stability, power, compatibility, and layout. If a motherboard is certified, then NVIDIA's drivers will enable SLI functionality.NVIDIA SLI Technology for Intel X58 Motherboards Review
Some certified motherboards with native slot configurations will support 2-way and 3-way SLI configurations. In this case, native slot configurations consist of PCI-Express slots that are connected to Intel's X58 chipset. However, X58-based motherboards with NVIDIA's nForce 200 chip will be able to provide full-bandwidth x16 connections for 3-way SLI. These systems will also be able to support four x16 PCI-Express slots, creating maximum bandwidth for 3-way SLI systems with a dedicated PhysX GPU.