The best replacement for crossfire is sli.

The best alternatives to crossfire are rated as following:
★★★★★  sli
★★★★  counter strike
★★★  single card
★★  combat arms
★  nvidia sli
★  single gpu
★  350z
★  crossfirex
★  sli which is better
★  firecat
★  sli motherboard
★  crossfire
★  acc allstars
  cs go
  renegade
  new card
  sli bridge
  sli benchmarks
  solstice
  warrock
  crossfire x
  ava
  dual graphics
  project blackout
  5970
  nissan 350z
  blackshot
  gtx 480 sli
  5850
  x2
  4870
  slk
  4870x2
  single video card
  sli better
  special force
  fifty shades
  audi tt

Your alternative for crossfire is not listed? Suggest!
Speaking about crossfire, one probably shouldn't forget about jon stewart.

Other search terms related to crossfire and their ratings are:
★★★★★ jon stewart
★★★ apu
★★ kaveri
★ wow
You have in mind a companion for crossfire and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of crossfire in all years. Click on graph for more.
crossfire
sli
counter strike