The best replacement for r9 270 is 7870.

The best alternatives to r9 270 are rated as following:
★★★★★  7870
★★★  gtx 660
★★  7850
★★  660
★★  750 ti
★  760
★  r9 270x
  hd 7850
  gtx 580

Your alternative for r9 270 is not listed? Suggest!
Speaking about r9 270, one probably shouldn't forget about bf4.

Other search terms related to r9 270 and their ratings are:
★★★★★ bf4
You have in mind a companion for r9 270 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of r9 270 in all years. Click on graph for more.
r9 270
7870
gtx 660