This post contains the results of a Ruby shootout on Windows that I recently conducted. [..] All tests were run on Windows 7 x64, on an Intel Core 2 Quad Q6600 2.40 GHz, 8 GB DDR2 RAM, with two 500 GB 7200 rpm disks.

Antonio Cangiano

Antonio Cangiano has pitched Ruby 1.8.7, 1.9.1p378, 1.9.2, JRuby 1.5.1 and IronRuby 1.0 against each other for a Ruby performance "shootout" on Windows 7. JRuby 1.5.1 came in as fastest.