output

Calculating -------------------------------------
                 old   124.917k i/100ms
                 new   127.378k i/100ms
-------------------------------------------------
                 old      3.766M (± 5.0%) i/s -     18.862M
                 new      3.797M (± 4.8%) i/s -     18.979M

Comparison:
                 new:  3797241.3 i/s
                 old:  3765728.9 i/s - 1.01x slower

test.rb

require 'benchmark/ips'

Benchmark.ips do |x|
  a1 = Array.new(100000, Object.new)
  a2 = Array.new(100000, Object.new)

  x.report("old") do
    a1.eql? a2
  end

  x.report("new") do
    a1.new_eql? a2
  end

  x.compare!
end