The best replacement for core 2 duo is dual core.

The best alternatives to core 2 duo are rated as following:
★★★★★  dual core
★★★★  core 2 quad
★★★  i3
★★★  pentium d
★★★  core duo
★★★  i5
★★  pentium 4
★★  i7
★★  amd
★  quad core
★  quad
★  pentium
★  pentium dual core
★  core i5
★  centrino
★  xeon
  celeron
  dual core which is better
  turion 64 x2
  i5 benchmark
  centrino 2
  intel core duo
  atom
  athlon 64 x2
  athlon x2
  i7 benchmarks
  core i3
  turion
  haswell
  x2
  haswell i5
  dual core which is latest
  i5 processor
  quad core xeon
  sandy bridge
  i3 processor
  dual core processor
  athlon ii
  g2020
  intel dual core
  core quad
  am2

Your alternative for core 2 duo is not listed? Suggest!
Speaking about core 2 duo, one probably shouldn't forget about ddr3.

Other search terms related to core 2 duo and their ratings are:
★★★★★ ddr3
★★★ gtx 750 ti
★★ gtx 660
★ dual core
★ core i3
★ i3
★ gtx 460
★ core duo
You have in mind a companion for core 2 duo and it is not yet here? Propose!



Google Trends

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core 2 duo
dual core
core 2 quad