The best replacement for 7870 is 660.

The best alternatives to 7870 are rated as following:
★★★★★  660
★★★★  7950
★★★★  7850
★★★  r9 270x
★★★  760
★★★  gtx 660
★★  660 ti
★★  7970
★★  770
★  r9 270
★  670
★  6950
★  270x
★  6870
★  gtx 760
★  7770
★  gtx 770
★  7790
★  r7 260x
★  6970
  750 ti
  570
  580
  650 ti boost
  270
  6850
  r9 280x
  280x
  260x
  gtx 580
  gtx 670
  gtx 570

Your alternative for 7870 is not listed? Suggest!
Speaking about 7870, one probably shouldn't forget about fx 6300.

Other search terms related to 7870 and their ratings are:
★★★★★ fx 6300
★★★★★ 7850 crossfire
★★★★★ q6600
★★ e8400
★★ 3570k
★ i5 3570k
★ a10
★ r9 270x
★ 6870
apu
7850
You have in mind a companion for 7870 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of 7870 in all years. Click on graph for more.
7870
660
7950