From: "Andreas S." <x-ruby-lang@...>
Date: 2010-11-02T00:20:44+09:00
Subject: Re: Why Ruby 1.9.2 double the speed on 2.53GHz vs 2.2GHz Core 2 Duo?

winter heat wrote in post #958421:
> "ruby 1.9.2p0 (2010-08-18 revision 29036) [i386-darwin9.8.0]"
> "ruby 1.9.2p0 (2010-08-18 revision 29036) [x86_64-darwin10.4.0]"

Some of your rubies are built with the old i386 (32 bit) instruction 
set, some with the new x86_64 (64 bit) instruction set. The latter is 
obviously faster.

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