Wasn't that actually a very short lived period of time? Especially with gains up to 70%, and you had to contend with new stutters?
replynvidia supported it for 17 years and amd still supports it but only on older cards
replyOh NV Surround, how we miss thee
replyI don't miss it.
replyI got a pair of 9800GTs back in '08 to play with SLI. It only helped with some games, and despite having all those video output jacks the rig only supported two monitors.
By 2015, the essentially-free iGPU part of an i3 Skylake CPU was ~better than the SLI rig.