The best replacement for dual channel is single channel.

The best alternatives to dual channel are rated as following:
★★★★★  single channel
★★★  triple channel
★★  single channel ram
★★  quad channel
★★  single
★  single channel memory
★  tri channel
★  tri channel memory
★  more ram
★  triple channel memory
★  quad channel ram
★  ddr
★  single channel ddr3
★  stereo
★  single stick
★  quad channel memory
  triple channel ram
  more memory
  single channel ddr2
  non dual channel
  joint stereo
  triple
  3 gb
  tri channel ram
  ddr2
  dual rank
  single channel ddr
  8gb single channel
  3gb
  triple channel ddr3

Your alternative for dual channel is not listed? Suggest!
Speaking about dual channel, one probably shouldn't forget about 4 sticks of ram.

Other search terms related to dual channel and their ratings are:
★★★★★ 4 sticks of ram
★★★★ 3 sticks of ram
You have in mind a companion for dual channel and it is not yet here? Propose!



Google Trends

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dual channel
single channel
triple channel