Famous graphics chips—multi GPUs

When 3D graphics controllers were just immerging in the late 1990s, one company in particular, 3Dfx, experimented with ways to scale up the performance of accelerating the 3D gameplay. Their idea was scan-line interleave (SLI), introduced in 1998 as part of their second-generation chip introduction, Voodoo2 (or Voodoo2). In SLI mode, two Voodoo2 add-in-boards (AIBs) could run in parallel, with each one drawing every other line of the display. The original Voodoo Graphics also had SLI capability but was only used in the arcade and professional markets. In addition to theoretically reducing the scan time, it also increased the available