SLI is becoming pretty big now and there are quite a few diverse offerings from various vendors. It can get a little confusing though, especially with new technologies, deciding what is the best and what is worth getting. Here's a detailed glance at 6 different SLI capable Athlon motherboards using the nForce 4 chipset, all head to head with similar hardware to see how they really stack up. The results are pretty interesting across the board, and even using the same chipset with the same video card you see many boards that out perform others by a significant margin. This only deals with nVidia cards and AMD processors though, and we'll have to wait a bit longer before we see any benchmarks from Crossfire capable boards or Intel CPUs.