The best replacement for 6990 is 7970.

The best alternatives to 6990 are rated as following:
★★★★★  7970
★★★  590
★★★  7990
★★  290x
★★  6970
★★  gtx 590
★★  580
★★  680
★★  6970 crossfire
★  gtx 680
★  5970
★  6950 crossfire
★  hd 7970
  6970 cf
  690
  2 6970
  580 sli
  dual 6970
  nvidia 590

Your alternative for 6990 is not listed? Suggest!
Speaking about 6990, one probably shouldn't forget about 6970.

Other search terms related to 6990 and their ratings are:
★★★★★ 6970
★★ 6970 crossfire
You have in mind a companion for 6990 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of 6990 in all years. Click on graph for more.
6990
7970
590