MSI brings SLI to all of its X58 mobos
 

SLI is becoming increasingly accessible in the Core i7 world. MSI tells us it now features support for the Nvidia multi-GPU technology across its entire line of X58 motherboards, allowing even folks with the relatively affordable X58 Pro-E to run multiple GeForces in SLI.

Other supported boards include the X58M, X58 Platinum, X58 Eclipse SLI, and X58 Eclipse Plus. Those boards already support AMD CrossFire X multi-GPU configs, as well. To enable Nvidia SLI capabilities on the aforementioned mobos, all you need to do is install the latest BIOS update.

http://techreport.com/discussions.x/17049