The best replacement for gtx 780 is r9 290x.

The best alternatives to gtx 780 are rated as following:
★★★★★  r9 290x
★★★★★  r9 290
★★★★  titan
★★★★  780 ti
★★★★  770
★★★  r9 280x
★★★  680
★★  gtx 780 ti
★★  gtx 690
★★  690
★★  7970
★  290x
★  gtx 760 sli
★  770 sli
★  gtx 770
★  760 sli
★  290
★  7950
  gtx titan
  780m
  gtx 580
  gtx 680
  gtx 580 sli

Your alternative for gtx 780 is not listed? Suggest!
Speaking about gtx 780, one probably shouldn't forget about i7 920.

Other search terms related to gtx 780 and their ratings are:
★★★★★ i7 920
★★★★ i5
★★★ fx 8350
★★★ i5 3570k
★★ 3 monitors
★★ amd fx 8350
★ i3
★ i5 2500k
You have in mind a companion for gtx 780 and it is not yet here? Propose!



Google Trends

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gtx 780
r9 290x
r9 290